Sun Microsystems SL8500 Best Practices Manual
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Sun Microsystems SL8500 Best Practices Manual

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SL8500
Modular Library System
Best Practices Guide
Part Number: TM0017
Revision B

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Summary of Contents for Sun Microsystems SL8500

  • Page 1 SL8500 Modular Library System Best Practices Guide Part Number: TM0017 Revision B...
  • Page 3 SL8500 Modular Library System Best Practices Guide Sun Microsystems, Inc. www.sun.com Part Number: TM0017 March 2007 Revision B...
  • Page 4 Copyright © 2007 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, California 95054, Etats-Unis. Tous droits réservés. Sun Microsystems, Inc. détient les droits de propriété intellectuels relatifs à la technologie incorporée dans le produit qui est décrit dans ce document.

  • Page 5: Summary Of Changes

    Summary of Changes Date Revision Description December 2005 Initial release of the Best Practices Guide. March 2007 Changes to the revision include: • Removed classification for customer availability. • Added new cover and copyright information. • Updated to support five storage expansion modules. •...
  • Page 6 Summary of Changes iv SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 7: Table Of Contents

    Adding SL8500 Libraries to the Right ....... . . 17...

  • Page 8: Contents

    ............45 vi SL8500: Best Practices • March 2007...
  • Page 9 When to Vary SL8500 Components Offline to HSC ....... .49...
  • Page 10 Merging or Splitting SL8500 Libraries ........
  • Page 11 Contents HSC and Dual TCP/IP Support ..........105 Dual IP Connection .
  • Page 12 Contents x SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 13: Figures

    Figures Figure 1. PowderHorn—9310 and SL8500 Comparison ......2 Figure 2. Library Modules ........... 3 Figure 3.
  • Page 14 Figure 39. Internal Addressing Map ......... . 137 xii SL8500: Best Practices • March 2007...
  • Page 15 Table 10. SL8500 and HSC Mapping ........
  • Page 16 Tables xiv SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 17: Preface

    Preface This document contains best practice guidelines for the optimization for the SL8500 library along with suggestions about how to improve the performance. ■ Intended Audience This document is written for Sun Microsystems and StorageTek account executives, system engineers (SEs), professional services (PS), and marketing and sales representatives.

  • Page 18: Organization

    Chapter 2, Library Discover ways to optimize the SL8500 library and improve performance. Content Management Chapter 3, HSC Best Find out how you can improve performance of the SL8500 library with the Practices Host Software Component (HSC). Chapter 4, VSM Best...

  • Page 19: Related Publications

    Systems Assurance Guide MT9229x Installation Manual 96138 User’s Guide 96154 SL8500 Optimization Checklist TT0017x All publications listed above are available in portable document format (PDF) online at the Customer Resource Center (CRC). • The URL for the CRC is http://www.support.storagetek.com •...

  • Page 20: Related Training

    Customer Training Customers can review the Training Catalog that is available through the Sun Web site at: http://www.sun.com. Click on the Training link at the top of the page. http://www.sun.com/training. xviii SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 21: Additional Information

    Preface ■ Additional Information Sun Microsystems, Inc. (Sun) offers several methods for you to obtain additional information. Sun’s External Web Site The Sun external Web site provides marketing, product, event, corporate, and service information. The external Web site is accessible to anyone with a Web browser and an Internet connection.
  • Page 22 Preface xx SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 23: 1: Sl8500 Architecture

    SL8500 Architecture On the surface, the SL8500 and the PowderHorn libraries may appear similar. Many assume that the SL8500 is just a newer, high-performance, PowderHorn. While this assumption may have been true for the evolution from the original 4400 library to the PowderHorn library—it is only partially true for the evolution from PowderHorn to the SL8500 library.

  • Page 24: Figure 1. Powderhorn-9310 And Sl8500 Comparison

    Customer Interface Module (CIM) 3,176 (1 SEM) 4,904 (2 SEMs) 6,632 (3 SEMs) 8,360 (4 SEMs) 10,088 (5 SEMs) Appendix B for more comparisons between the SL8500 and 9310 PowderHorn. 2 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 25: Modules

    E = End stop X = Diagnostic cartridges Floor labels can be placed inside the library to help identify column numbers and locations. The part number for these labels is: XSL8500-COL-LABEL. TM0017 • Revision B Chapter 1 SL8500 Architecture 3...

  • Page 26: Table 1. Module Descriptions

    • Two elevator assemblies that can transfer up to four cartridges from one rail to another. Storage Expansion The SL8500 library can accommodate up to five storage expansion modules Modules (callout #4). Each expansion module: • Increases the depth of the library by 95.25 cm (37.5 in.) •...

  • Page 27: Capacities

    ACSLS or HSC managed cleaning, the cartridges must be placed in the customer usable slots. The reserved slots in the service area may be used, however, for non-ACSLS and HSC managed cleaning using the library’s cleaning and diagnostic functions. TM0017 • Revision B Chapter 1 SL8500 Architecture 5...

  • Page 28: Library Walls, Arrays, And Slots

    Address Scheme Cartridge locations in previous libraries were: ACS, Library, Panel, Row, and Column (HLI-PRC). Cartridge slot designations in an SL8500 library uses five parameters: Library, Rail, Column, Side, Row (L,R,C,S,W): 1. Library: Is the number of that library or within a library complex 2.

  • Page 29: Understanding The Address Scheme

    SL8500 Architecture Understanding the Address Scheme There are differences in the addresses of the SL8500 and other libraries. • The SL8500 is one’s-based (1) and uses negative numbers. • Other libraries use a zero-based (0) and no negative numbers. •...

  • Page 30: Figure 3. Panel Numbering

    A host library interface (HLI) panel spans across the width of the library to include both sides (left and right) and both walls (inner and outer). Figure 3 shows how panels match-up to the columns in an SL8500 library. Figure 3. Panel Numbering HLI Panel Numbers Panel 0 –...

  • Page 31: Touch Screen Operator Control Panel

    512 MB memory and 32 MB RAM • Java applet as the graphical user interface (GUI). A pen and stylus feature are available for the touch screen interface: • Pen/Stylus Combo is: XSL-STYLUS-Z • Holder is: XSL-STYLUSHOLD-Z TM0017 • Revision B Chapter 1 SL8500 Architecture 9...

  • Page 32: Translating Addresses Using The Library Console

    You can use the StreamLine Library Console (SLConsole) Search utility to translate between the SL8500 internal address and the ACSLS or HSC panel, row, and column. To locate a cartridge: 1. Log in to the SLConsole, select Diagnostics, and select the Search tab.

  • Page 33: Figure 5. Translating Addresses

    Location Details screen that contains the following information. The location details includes additional information including the HLI-PRC address. Choosing hli1 as the Requestor Displays both the internal address and the hli1 Requester address. TM0017 • Revision B Chapter 1 SL8500 Architecture 11...

  • Page 34: Robotic Architecture

    Corresponding LSM numbers are 0 to 3. • Each HandBot on a rail assembly can service up to 16 tape drives and all of the tape cartridges for that rail. The SL8500 library can have either one or two HandBots per rail. •...

  • Page 35: Elevators

    SL8500 Architecture ■ Elevators Figure 7. Elevators The SL8500 library features two Elevators that provide vertical pass-thru operations between library storage modules within the same library. Note: Pass-thru Ports provide horizontal pass-thru operations between adjacent library storage modules. Each of the four LSMs share the resources of the two elevators.

  • Page 36: Pass-Thru Ports

    The following are highlights about the PTP feature: • All SL8500 libraries come equipped and ready for the addition of the PTP frame and feature—no additional walls are needed. • Power for the PTPs comes from the same +48 VDC power bus as the robotic rails.

  • Page 37: Figure 10. Pass-Thru Port Configuration

    For an HSC configuration, administrators must specify both the elevators and the pass-thru port mechanisms to each of the adjacent LSMs in the complex. For example: This is an example of an HSC LIBGEN that shows two SL8500 libraries in a library complex connected together with a Pass-thru Port feature.

  • Page 38: Pass-Thru Port Considerations

    The library that is always located on the left side of a Home library, as viewed from the front. LSMs in an SL8500 library complex are numbered from top down and addressed from right to left as viewed from the front of the libraries.

  • Page 39: Dynamically Upgrading Acsls And Hsc Configurations

    • LIBGEN, SLICREAT, and MERGEcds** (HSC must be stopped) Adding SL8500 Libraries to the Right When a new SL8500 library is added to the right of the complex, the LSMs must be renumbered; consequently the volume locations will change. Important: •...
  • Page 40 Movements of cartridges to existing, renumbered, LSMs will collide with cartridges already in the cells. An outline of the steps to upgrade the library complex consists of: 1. Add the new SL8500 library to the complex. 2. Update the ACSLS or HSC configurations dynamically or statically. •...

  • Page 41: Cartridge Access Ports

    SL8500 Architecture ■ Cartridge Access Ports Figure 11. Cartridge Access Ports The SL8500 library storage modules can share the resources of two cartridge access ports (CAPs). • Each CAP: Consists of 39 slots total (3 magazines with 13-slots each). Spans across three rails—2, 3, and 4 (LSMs 1, 2, and 3) only.

  • Page 42: Second Cap

    For ACSLS: “Working Around an Inoperative HandBot” on page 79 Second CAP The SL8500 library offers a second, optional, CAP feature. The second CAP is located on the right-hand portion of the front access door. Advantages of this second CAP are: •...

  • Page 43: Addressing

    For addressing purposes, software needs a fixed location for the CAP, and uses: ACS,LSM,CAP#. The LSM address is associated with the second rail in each library because there is no adjacent CAP magazine for the top rail in an SL8500 library. Figure 11 on page 19 as an example.

  • Page 44: Ethernet Interfaces

    SL8500 Architecture ■ Ethernet Interfaces The SL8500 library uses TCP/IP protocol over an Ethernet physical interface to manage and communicate with the host and library management applications. Figure 12. Ethernet Connections This interface enables both: • Open system platforms with ACSLS •...

  • Page 45: Terminology And Differences

    There are differences between the terms Dual LMU (from previous libraries) and Dual TCP/IP for the SL8500. Here is an overview between the two. An overview of Dual LMU (9330 and 4430) and Dual TCP/IP (SL8500). 1. Dual LMU (9330 and 4430): Consists of a: 1) Master LMU and a 2) Standby LMU.
  • Page 46 • Currently, there is only one HBC card in the SL8500 library. • In the SL8500, the HBC card provides all of the functions of the LMU, the LCU, and the library communications facility (LCF). • Both HSC and ACSLS detect when a path is unavailable and automatically re-send transmissions over the other path.

  • Page 47: Operational Differences

    ■ Operational Differences For customers familiar with other automated tape libraries, the following are a few operational differences they should consider for the SL8500. LSM Preferencing LSM preferencing is basically the same as with other libraries—it is the attempt to minimize any pass-thru operations by the elevators and pass-thru ports.

  • Page 48: Enter And Eject Commands

    Once a HandBot successfully inserts a tape cartridge into a drive, it is immediately available for the next request and does not wait until the drive reports that the cartridge has been loaded. The SL8500 library control electronics waits to return the response to the mount request until it detects that the tape drive has successfully loaded the cartridge tape.

  • Page 49: Tape Drive Placement

    Examples are virtual mounts for VSM—a virtual tape storage subsystem (VTSS) only uses 8 tape drives concurrently. • Application-specific requirements may separate drive-types. Example: placing T9840 access-centric tape drives on one rail, and T9940 capacity-centric tape drives on another. TM0017 • Revision B Chapter 1 SL8500 Architecture 27...

  • Page 50: Front Door Operations

    When the main doors are closed, the HandBots and other mechanisms automatically go through an initialization process that takes about five minutes. During this time, the SL8500 is offline to ACSLS or HSC and library operations are stopped. After this, the SL8500 comes back online and starts a physical audit of all storage cells as a background operation.

  • Page 51: Audits And Initialization

    The term audit refers to the process of reading and cataloging all cartridges within a library or verifying cartridge locations—the physical inventory. An SL8500 library is capable of storing all cartridge locations within the library on the HBC card—the library controller.

  • Page 52: Audit Processes

    Retrieve it (if it is the correct cartridge) and Satisfy the request. • When ACSLS or HSC requests an audit of a location in the SL8500 library, the library completes a physical audit of the location before it responds to the ACSLS or HSC request.

  • Page 53: Verified Audit

    System problems: The HBC physical inventory and the host’s cartridge record must match or system-level problems will occur. Remember also that the cartridge locations have unique notations between the SL8500 internal address and the host software’s perspective of HLI-PRC. Library Console Audit Screen Figure 14 shows and example of the Library Console Audit screen.

  • Page 54: Scan Engine

    CCD imager provides a very narrow picture that cuts across the bars in the barcode creating a digitized signal. Because the SL8500 scan engine uses a light source that illuminates the label, anything that causes a reflection back into the lens could blind the CCD imager and cause barcode read problems.

  • Page 55: Media Id Labels

    LC = 10 GB E = DLTtape III-XT Cleaning cartridge: (Note: The SL8500 CU = Universal does not support DLT Implied domain = 0 tapes or drives) Implied domain = 1 TM0017 • Revision B Chapter 1 SL8500 Architecture 33...

  • Page 56: Barcode Standards

    HandBot and the cartridge. Unreadable Labels The SL8500 barcode reader tries to read a label at five different positions in front of a cartridge slot. If all these attempts fail, the HandBot moves the reader in and does an up...

  • Page 57: 2: Library Content Management

    Library Content Management The most important change for the SL8500 is the need to re-evaluate the content management philosophy with respect to the physical structure and capacities of the SL8500. • The SL8500 has four LSMs per library that work in parallel.

  • Page 58: Dedicating Rails

    Using these strategies will help to optimize the SL8500 library and enhance performance. ■ Dedicating Rails The SL8500 is not just another library. The SL8500 architecture is four separate library storage modules that work together in parallel. This architecture offers extremely flexible and scalable configurations that can StreamLine automated tape applications.

  • Page 59: Managing Cartridges

    Library Content Management ❏ Using the top rail • Avoid using the top rail to support an application that requires a significant number of ejects and enters. To enter and eject cartridges from LSM 0 requires elevator pass-thru activity. • For HSC-controlled systems, use the “TLSM”...
  • Page 60 Migrate the least recently used (LRU) cartridges away from tape drives and the performance zone or to archival LSMs. This ensures there will be space for the active cartridges closer to the drives. 38 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 61: Grouping Tape Drives

    Grouping Tape Drives During the installation, having an understanding about how to logically group and install the tape drives in an SL8500 can minimize both elevator and PTP activity. Strategies to use when determining where to install the tape drives include: ❏...

  • Page 62: Minimizing Elevator And Ptp Activity

    Maintaining scratch Make sure that scratch cartridges are available in sufficient quantity for cartridges each tape workload. For an SL8500, this means having scratch cartridges available on each rail (LSM) of the library. ❏ Keeping free cells Make sure there are adequate free cells in each LSM.

  • Page 63: Cartridge Access Port Guidelines

    Planning for Content Using Figure 16 on page 35 as an example, Figure 17 on page 42 provides space that you can use to help plan the content of an SL8500 library. TM0017 • Revision B Chapter 2 Library Content Management 41...

  • Page 64: Figure 17. Content Management Plan

    Less active volumes L203_758 Summary Tape Drives Storage Cells Slots Tapes Free Workloads: Workloads: Workloads: Workloads: Total # of Drives: Expansion Modules: Total Capacity: Performance Zone Less active volumes L203_758 42 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 65: 3: Hsc Best Practices

    Changing the Configuration Adding New SL8500 Libraries Expanding an SL8500 Library Merging or Splitting SL8500 Libraries Refer to Appendix B, “HSC Support for the SL8500” in HSC 6.0 or 6.1 Operator’s Guide for more information and procedures. ■ Supported Software Levels •...
  • Page 66 Make sure that enough scratch cartridges are available in each LSM where they will be needed. For an SL8500, this means having scratch cartridges available on each rail (LSM) of the library.

  • Page 67: Configuring Tape Drives

    HSC Best Practices ■ Configuring Tape Drives How tape drives are configured in the SL8500 can minimize both elevator and PTP activity while supporting your tape workloads. Strategies to use in determining where tape drives are located in the SL8500 include: •...

  • Page 68: Managing Cartridge Locations

    • How to enter cartridges: Recommendation: Enter cartridges through the CAP. While the access door is open, the entire SL8500 is offline and all automated mounts stop. If cartridges have been manually placed in SL8500 cells with the access door open, HSC must perform a full audit to update the control data set (CDS) to match the actual inventory of the library.

  • Page 69: Finding Missing Cartridges

    Where to locate archive cartridges. Recommendation: Move archival cartridges to LSMs away from drives and CAPs. The top rail in the SL8500 (such as LSM 00) is a good archival location, since it is not adjacent to the CAP. ■...

  • Page 70: Understanding Sl8500 Internal Addresses

    Understanding SL8500 Internal Addresses There are differences in the SL8500 internal addresses and HSC addresses that you need to keep in mind. The SL8500 library list cartridge addresses by library, rail, column, side, and row. Other libraries supported by HSC list cartridge addresses by LSM, panel, row, and column.

  • Page 71: Translating Addresses

    When to Vary SL8500 Components Offline to HSC Before opening the access door Before opening the SL8500 access door, vary the ACS or modify all four LSMs offline. This allows all outstanding requests to complete and prevents new requests from starting.

  • Page 72: Using The Service Safety Door

    HSC Best Practices If an LSM (rail) is inoperative If SL8500 Firmware Version 2.52 or later is not installed, and if an LSM is inoperative, modify the LSM offline: MODify LSM lsm-id OFFline If a CAP is inoperative If the CAP is inoperative, modify the CAP offline: MODify CAP cap-id OFFline ■...

  • Page 73: Working Around An Inoperative Handbot

    CAP. This causes all enter and eject requests from HSC to fail. The middle CAP magazine is adjacent to the third SL8500 rail. On a single SL8500, this is LSM 2. The middle CAP magazine can be inaccessible on: •...

  • Page 74: Changing The Hsc Recording Interval

    For example: Mounts and dismounts to all existing drives will not be affected when you add, change, or remove drives. 52 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 75: Before Reconfiguring Hsc For The Sl8500

    Important: Before configuring the SL8500, the elevators must be green. If the elevators are not green, do not configure the SL8500 to HSC. The elevators are the logical pass-thru-ports (PTPs). Without PTPs, HSC will not know that the SL8500 rails are connected.

  • Page 76: Changing The Configuration

    Refer to the Tech Tip on the Customer Resource Center: HSC – Procedures to Update SL8500 Configurations LSMs in an SL8500 complex are numbered from right to left and top to bottom as viewed from the front of the libraries.

  • Page 77: Adding New Sl8500 Libraries

    • LIBGEN, SLICREAT, and MERGEcds (HSC must be stopped) Adding Libraries to the Right When a new SL8500 library is added to the right of the complex, the LSMs must be re-numbered; consequently the volume locations will change. Important: •...

  • Page 78: Expanding An Sl8500 Library

    HSC Best Practices Existing LSMs must be offline while upgrading the SL8500 library complex and during the HSC audit. Otherwise, problems will occur, such as: • Mounts will fail because cartridges cannot be found in their new locations. • Entry of new cartridges will collide with existing cartridges.

  • Page 79: 4: Vsm Best Practices

    LSM is used. This is true in any library type configuration, but may be seen to a higher degree in an SL8500 because of the lower number of cells in each logical LSM; and, to some extent, due to the maximum number of 16 tape drives per logical LSM.

  • Page 80: Considering Vtcs Maintenance

    ■ Configuring the LSMs and RTDs The SL8500 is a new Library architecture. This is not new news—but, it is worth repeating because it means changing the way we currently think about VSM configurations. There is a smaller capacity per logical LSM, less tape drives per logical LSM, multiple storage elements available to consider, and both vertical and horizontal pass-thru capability.

  • Page 81: Considering Hsc And Vtcs Parameters

    LSMs as possible. Also, any LSMs used should be vertically adjacent to each other as far as possible. Vertical pass- thru tends to be faster than adjacent pass-through to another SL8500 library at the present time.
  • Page 82 VSM Best Practices • VTCS Migration Policies In planning RTD and MVC placement within the SL8500 libraries, the customer must review their VTCS Migration Policies to ensure that they are appropriately set to accomplish their goal in optimizing performance of VSM in an SL8500 library complex.

  • Page 83: Considering Vsm Workload Separation

    Please refer to the VTCS Command and Utility Reference for instruction on the use of these VTCS parameters. A better way for planning workload separation for VSM in a SL8500 is to logically separate the workload by determining “active” groups of MVCs and “extended store”...

  • Page 84: Analyzing Workloads And Separating Mvcs

    This report should be produced by LSM, sorting by the parameter MDAYS, which means days since the cartridge was last mounted. The MVCs should then be ejected in groups of MDAYS for transfer to the SL8500. ■ VSM Configuration Hierarchy...

  • Page 85: Placing Rtds And Mvcs Within The Library

    VSM Best Practices ■ Placing RTDs and MVCs within the Library The ideal MVC placement is within one LSM. If capacity requirements force the user to use more than one LSM, then the recommendation is that the customer • Duplex to separate ACSs, •...

  • Page 86: Rtd Preferencing

    16, the chances of an RTD being available in the LSM where the MVC resides is much less likely than it would be in a native tape environment. 64 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 87: 5: Exlm Best Practices

    Host Software Component (HSC), Virtual Storage Manager (VSM), and the customers tape management system (TMS). This chapter provides the current best practices for using Expert Library Manager (ExLM) with the StreamLine SL8500 library. These include: • Adjusting Content Management Philosophies •...

  • Page 88: Adjusting Content Management Philosophies

    Entering Cartridges • Using the Performance Zone • Locating Physical Tape Cartridges The basic configuration of an SL8500 library is 1,448 cartridges; spread across four LSMs is equal to 362. 66 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 89: Using Pass-Thru Mechanisms

    In some cases, it is simply not possible to eliminate pass-thru operations as the minimum number of active volumes or tape drives used exceeds the capacity of a single SL8500 LSM. That does not mean that there are still opportunities for reducing the aggregate pass-thru rate.

  • Page 90: Ejecting Cartridges

    Ejecting Cartridges Currently there is one 39-slot cartridge access port that spans three rails in the SL8500 library. Each of the four LSMs must share the resources of this CAP— which is owned by the LSM on rail 2 (LSM 01).

  • Page 91: Entering Cartridges

    Using the Performance Zone ExLM support for the SL8500 implemented the concept of the Performance Zone (PZ). The performance zone is an area within an SL8500 LSM that is closest to the tape drives. Because of the physical location of the PZ, volumes in this zone have faster access and response times to the tape drives.

  • Page 92: Locating Physical Tape Cartridges

    ■ Changing Configurations The overall ExLM configuration for a SL8500 basically consists of two components, the placement of tape drives and the placement of tape volumes. If after a period of running and gathering data with a specific configuration it is determined that another configuration may provide better performance, moving to that new configuration is fairly simple with ExLM.

  • Page 93: 6: Acsls Best Practices

    ACSLS Best Practices This chapter provides guidelines for optimizing the Automated Cartridge System Library Software (ACSLS) for the SL8500 library. Topics include: • Minimizing Elevator and PTP Activity • Configuring Tape Drives • Managing Cartridge Locations • Understanding SL8500 Internal Addresses •...

  • Page 94: Supported Software Levels

    ACSLS 7.1 with PUT0502 has many fixes and enhancements, plus this is a prerequisite for all future maintenance. This level of software with the SL8500 library firmware of 2.52 is not limited to eight HandBot enhancements—the SL8500 returns “LSM Not Ready”...

  • Page 95: Configuring Tape Drives

    ACSLS Best Practices ■ Configuring Tape Drives How tape drives are configured in the SL8500 can minimize both elevator and PTP activity while supporting your tape workloads. Strategies to use in determining where tape drives are located in the SL8500 include: •...

  • Page 96: Managing Cartridge Locations

    ACSLS Best Practices • Configuring the SL8500 with 8 HandBots (two HandBots per rail) provides redundancy so you can always access the cartridges and drives that support a workload. ■ Managing Cartridge Locations How cartridges are originally entered in the library or their status in the library can have an affect on ACSLS performance.

  • Page 97: Understanding Sl8500 Internal Addresses

    Addresses Using the Library Console” on page ■ Finding Missing Cartridges Caution: If the SL8500 contents are out of sync with ACSLS due to manual operations such as loading cartridges directly, it is not advisable to attempt continued operations. If you want to manually add tapes, adding them to a particular LSM within the SL8500 is a better approach.

  • Page 98: Varying The Sl8500 Offline

    ACSLS. In this case you must vary components offline to ACSLS with: vary lsm lsm–id offline With version 2.52, the SL8500 library notifies ACSLS that the LSM is not ready (inoperative). • If a CAP is inoperative, vary it offline: vary cap cap_id offline 76 SL8500: Best Practices •...

  • Page 99: Using The Service Safety Door

    • After the door is opened, vary the cartridge access ports back online Note: When the SL8500 Service Safety Door is closed to separate a service bay from the rest of the library, the service representative can open the access door on that side without taking the LSM or ACS offline.

  • Page 100: Updating Acsls After A Handbot Installation

    If you have not installed these PTFs, you must update the ACSLS library configuration by: 1. Shutting down ACSLS. 2. Running acsss_config. This updates the ACSLS configuration to reflect the presence of the eight HandBots. 3. Starting ACSLS. 78 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 101: Working Around An Inoperative Handbot

    CAP. This causes all enter and eject requests from ACSLS to fail. The middle CAP magazine is adjacent to the third SL8500 rail. On a single SL8500, this is LSM 2. The middle CAP magazine can be inaccessible on: •...

  • Page 102: Configuring Acsls For The Sl8500

    To verify that all the components of the SL8500 are operational: Logon to the StreamLine Library Console. You can use either the touch screen operator panel on the front of the SL8500 or use a remote Library Console connection. Select Tools ➩ System Detail.

  • Page 103: Using The Dynamic Configuration Utility

    A drive panel, the drives on a panel, mounts and dismounts to all existing drives are not affected. CAUTION: Do not add SL8500 libraries with more than one Storage Expansion Module using dynamic configuration. To add these libraries, you must: 1.

  • Page 104: Changing The Configuration

    Refer to the Tech Tip on the Customer Resource Center: ACSLS – Procedures to Update SL8500 Configurations LSMs in an SL8500 complex are numbered from right to left and top to bottom as viewed from the front of the libraries.

  • Page 105: Adding New Sl8500 Libraries

    Dynamic configuration (ACSLS online and running) • acsss_config (ACSLS must be offline and stopped) Adding Libraries to the Right When a new SL8500 library is added to the right of the complex, the LSMs must be re-numbered; consequently the volume locations will change. Important: •...

  • Page 106: Expanding An Sl8500 Library

    For more information and procedures, refer to the ACSLS 7.1 Installation, Configuration, and Administration Guide - CRC Update - appendix “ACSLS Support of the SL8500” - sections “Merging ACSs” and “Removing PTPs and Splitting ACSs”. 84 SL8500: Best Practices • March 2007...

  • Page 107: Using Acsls Ha

    ACSLS Best Practices ■ Using ACSLS HA ACSLS HA (High Availability) is a software/solution offered by Professional Services. This solution is available for the Solaris 8 and 9 platforms. In environments where there is only one ACS, it is sometimes desirable to fail over highly available servers in the event that communication is lost to the library.
  • Page 108 ACSLS Best Practices 86 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 109: 7: Independent Software Vendors

    SL8500 than others. This chapter discusses characteristics to be aware of for various applications. Note: Each ISV may handle optimization of the SL8500 differently in the way the software applications attempt to: Minimize pass-thru activity (elevator and pass-thru port)

  • Page 110: Characteristics

    (and, optionally, with a specific volume within that pool). Usage of the ‘float’ option Determining when setting float on benefits an application and if it does not. 88 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 111: Workload Separation

    Independent Software Vendors Workload Separation Being able to separate workloads is a major contributing factor to optimizing performance of the SL8500. • Placing back up applications on a specific rail. • Grouping tape drive types. • Tape Drive Location and Usage When configuring rails and applications, selection and location of tape drives can help minimize pass-thru activity.

  • Page 112: Tape Drive Selection Methods

    2. If there are still no drives available, it then checks LSM 0. 3. If again, no drives are available, it checks LSM 3. This is an example of the ISV software trying to minimize elevator movement. 90 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 113: Application Knowledge

    Independent Software Vendors Application Knowledge Knowledge or functionality of a software application pertains to how well it understand the components of the SL8500 library, including: • Library storage modules (LSMs) • Pass-thru ports (PTPs) Not all software applications understand pass-thru ports and depend on library management software to get the media from the source to its destination—for example: from LSM 1 to LSM 5.

  • Page 114: Query Mount

    LSM. If the jobs exceed the number of drives in this configuration, the drives will be busy and unable to satisfy the additional requests. The result can be a backup job that does not run. 92 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 115: 8: Tlc/Fsm

    File File File File Data sheets Data sheets TLC - 13 There are a few ways of downloading the tool. Go to Sun Microsystems SE Support Tools: • Click on: http://xmen.east/setools/TLC_FSM/tlc_content.html • Click on: http://xmen.east/setools/index.html#TLC and scroll to the TLC Field Simulation Model (TLCFSM) TM0017 •...

  • Page 116: Input For The Tlc/Fsm From Hsc And Acsls

    Gather trace data from current library activity to model and configure the SL8500 to support a customer’s application workloads. You can use the trace data from either 9310 or SL8500 libraries to model the configurations of tape drives and cartridges for an SL8500. To model SL8500 configurations: 1.

  • Page 117: 9: Ethernet Connectivity

    Ethernet Connectivity This chapter provides network examples for the Dual TCP/IP feature—a feature that provides two separate TCP/IP connections to an SL8500 library. Note: These connections are not redundant, they are two separate, active/active interfaces that must not connect to the same subnet.

  • Page 118: Tcp/Ip Important Considerations

    Ethernet Connectivity TCP/IP Important Considerations Connections: When you create an SL8500 library complex by connecting libraries together with pass-thru ports, all hosts must connect to only one library in the complex—preferably to the first or right-most library. Multiple host communication connections to more than one SL8500 library will cause problems.

  • Page 119: Network Planning

    3. Obtain or make a drawing of the network configuration. This will help with the configuration and fault isolation if necessary. 4. Important: The date and time of the SL8500 must also be checked and, if necessary, set through the CLI interface.

  • Page 120: Acsls And Dual Tcp/Ip Support

    When configuring libraries, the user is asked how many connections there are to the library and then the name of the devices (IP addresses). In order to take full advantage of Dual TCP/IP support on the SL8500, use the “route” command to manipulate the routing tables on the ACSLS server.

  • Page 121: Acsls Configuration One

    Dual TCP/IP feature. In this configuration, the ACSLS server contains two network interfaces that reside on two separate subnets—both going directly to the SL8500 library on the same two subnets as the server, one port each. Figure 23. ACSLS Configuration One...

  • Page 122: Table 14. Routing Table Acsls Configuration One

    192.168.0.50 will go through qfe0 and communication with 192.168.1.50 will go through qfe1. Remember: You must also configure the SL8500 routing tables. Refer to the Dual TCP/IP Technical Brief, TM0019 or the SL8500 Installation Manual, PN 96138 for more information.

  • Page 123: Acsls Configuration Two

    Subnet 3 Subnet 4 192.168.2/23 192.168.3/23 SL8500 In this example, the SL8500 uses a one to one relationship with the network interfaces on the ACSLS server in which the: • qfe0 interface communicates with the 2A interface on the SL8500 •...
  • Page 124 1.U = User, G = Group, H = Host Remember: You must also configure the SL8500 routing tables. Refer to the Dual TCP/IP Technical Brief, TM0019 or the SL8500 Installation Manual, PN 96138 for more information. 102 SL8500: Best Practices • March 2007...

  • Page 125: Acsls High Availability Configuration

    Ethernet Connectivity ACSLS High Availability Configuration The following example is a preferred configuration for an ACSLS High Availability (HA) environment. The purpose of the High Availability environment is to build in redundancy and eliminate single points of failure by using and connecting together two ACSLS servers.

  • Page 126: Retaining Customized Routing Table Entries

    In order to support the Dual TCP/IP feature on the SL8500, it is necessary to add custom entries to the routing tables. There are a couple ways to handle this: 1.

  • Page 127: Hsc And Dual Tcp/Ip Support

    Once this is completed, vary the ACS offline and back online to pick up the revised LMUPATH statement that includes the second connection. For more information about HSC, the SL8500, and Dual TCP/IP, refer to the: HSC Systems Programmer’s Guides Notes: •...

  • Page 128: Hsc Configuration One

    Dual TCP/IP. In this configuration, the mainframe host contains two network interfaces that reside on two separate subnets go through a public network; then connect to two different subnets before connecting to the SL8500 library. Figure 26. HSC Configuration One Mainframe...

  • Page 129: Table 13. Network Entries

    4. Define a second router on the second subnetwork in the routing paragraph of your TCP/IP profile data set. For example: 5. Define two dedicated static routes to the SL8500 destination port (2A and 2B) IP addresses over two different routers.
  • Page 130 YOUR.DSN(MEMBER) 9. Allow the trained SL8500 service representative to enter the network connections to the SL8500 library for either port 2A and 2B, whichever is applicable. 10. Vary the ACS offline and back online to pick up the revised LMUPATH statement that includes the second connection.

  • Page 131: Hsc Configuration Two

    Dual TCP/IP. In this configuration, one mainframe address connect to two SL8500 connections. To establish one host IP route from the HSC to two routes to the SL8500, use the process described in this section. Figure 27. HSC Configuration Two...
  • Page 132 YOUR.DSN(MEMBER). 5. Allow the trained SL8500 service representative to enter the network connections to the SL8500 library for either port 2A and 2B, whichever is applicable. 6. Vary the ACS offline and back online to pick up the revised LMUPATH statement that includes the second connection.

  • Page 133: Service Connectivity

    Ethernet Connectivity ■ Service Connectivity If the customer is only using one connection into the SL8500, the second port (2A) can be used as a connection for service. Figure 28. Service Connections Example connections include: • Service Delivery Platform (SDP).
  • Page 134 (CLI) and TCP/IP connection to: Configure the library (using PuTTY), Perform diagnostic functions (load and unload drives), and Initiate an audit 112 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 135: 10: Partitioning

    In layman’s terms, partitioning a hard drive makes it appear to be more than one hard drive. The SL8500 Modular Library System now provides the ability to partition the library—within hardware boundaries—to support from one to four physical partitions.

  • Page 136: Guidelines

    If partitioning is changed (rails added to or removed from a partition), cartridge locations remain constant. The basic configuration of an SL8500 library is 1,448 cartridges; spread across four LSMs provides 362 cartridges per rail. The maximum configuration of an SL8500 library is 10,088 cartridges; spread across four LSMs provides 2,522 cartridges per rail.
  • Page 137 Partitioning Remember: • Partitioned LSMs will not recognize other LSMs within the library unless they are in the same partition. • Elevators and CAPs are shared resources—each partition can fully use these resources for enter and eject operations. • No elevator pass-thru operations will occur between LSMs unless they are defined in the same partition, except when using the CAP to service Rail 1, regardless of its configured partition.

  • Page 138: Software And Firmware Requirements

    Partitioning ■ Software and Firmware Requirements Requirements for partitioning the SL8500 library include: • Order number: SL8500-UPG-PART • Upgrade number: XSL8500-UPG-PART • Library firmware FRS_3.7x or higher • StreamLine Library Console (SLC) at Version FRS_3.25 or higher • ACSLS Versions 7.1 and 7.1.1 with PUT0701 •...

  • Page 139: Capacities

    ■ Capacities Figure 29 shows an example of an SL8500 library with the capacities of each module; partition capacities per rail and per library configuration, plus drive modules (from 1 to 16 tape drives) for each rail. Figure 29. Partition Planning and Capacities 10,088 Table 16.

  • Page 140: Getting Started

    Override a CAP reservation • SE = Systems engineer • PS = Professional services representative • Service = Service representative (Svc) • Customer = System administrators, network administrators, system programmers, operators 118 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 141: Planning

    Partitioning ■ Planning Team members should include representatives from both the customer and Sun Microsystems to ensure that all aspects of the process are planned carefully and performed efficiently. Tasks include: • Identify and define the customer requirements and expectations •...

  • Page 142: Figure 30. Partition Planning Example

    4 T10K, 4Gb FC, Crypto Figure 31 on page 121 through Figure 36 on page 126 provide work sheets for planning partitions with the six different library configurations. Make copies as necessary. 120 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 143: Figure 31. Base Library Partition Planning

    Partitioning Figure 31. Base Library Partition Planning Rail 1 Rail 2 Partition ID Partition ID Hosts Hosts ACSLS or HSC ACSLS or HSC ACS, LSM Address ACS, LSM Address Applications Applications Cartridge capacity Cartridge capacity Free slots Free slots Tape Drive types Tape Drive types Rail 3 Rail 4...

  • Page 144: Figure 32. One Expansion Module Partition Planning

    Hosts ACSLS or HSC ACSLS or HSC ACS, LSM Address ACS, LSM Address Applications Applications Cartridge capacity Cartridge capacity Free slots Free slots Tape Drive types Tape Drive types 122 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 145: Figure 33. Two Expansion Modules Partition Planning

    Partitioning Figure 33. Two Expansion Modules Partition Planning Rail 1 Rail 2 Partition ID Partition ID Hosts Hosts ACSLS or HSC ACSLS or HSC ACS, LSM Address ACS, LSM Address Applications Applications Cartridge capacity Cartridge capacity Free slots Free slots Tape Drive types Tape Drive types Rail 3...

  • Page 146: Figure 34. Three Expansion Modules Partition Planning

    Hosts ACSLS or HSC ACSLS or HSC ACS, LSM Address ACS, LSM Address Applications Applications Cartridge capacity Cartridge capacity Free slots Free slots Tape Drive types Tape Drive types 124 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 147: Figure 35. Four Expansion Modules Partition Planning

    Partitioning Figure 35. Four Expansion Modules Partition Planning Rail 1 Rail 2 Partition ID Partition ID Hosts Hosts ACSLS or HSC ACSLS or HSC ACS, LSM Address ACS, LSM Address Applications Applications Cartridge capacity Cartridge capacity Free slots Free slots Tape Drive types Tape Drive types Rail 3...

  • Page 148: Figure 36. Five Expansion Modules Partition Planning

    Hosts ACSLS or HSC ACSLS or HSC ACS, LSM Address ACS, LSM Address Applications Applications Cartridge capacity Cartridge capacity Free slots Free slots Tape Drive types Tape Drive types 126 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 149: Enabling Partitions

    ■ Enabling Partitions Partitioning is an optional feature that the customer can purchase. Once purchased, a qualified Sun service representatives can connect to the SL8500 library service interface—command line interface (CLI)—and: • License tand Enable the partitioning feature License Command The license commands allows a service representative to: •...

  • Page 150: Assigning Partitions

    Touch screen interface (no mouse or keypad necessary) • 20 GB hard drive • 512 MB memory and 32 MB RAM • Java applet as the graphical user interface (GUI). 128 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 151: Partitioning

    Partitioning Partitioning To assign or create partitions: 1. Log in to the StreamLine Library Console. 2. Select Tools ➪ Partitions. 3. Select the Partition ID and desired rails for that partition. For example: Table 18. Partitioning Examples Partition ID Screen This example has no Unassigned partitions created;...

  • Page 152: Removing Partitions

    After creating the partitions, complete a contact sheet similar to Table 20 with information that will be useful if you need to override a CAP or contact administrators. Make copies as necessary. 130 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 153: Table 20. Partition Contact Sheet

    Partitioning Table 20. Partition Contact Sheet Partitions in this library? Library Port 2A • TCP/IP addresses Port 2B • 1 ❏ 2 ❏ 3 ❏ 4 ❏ Partition ID 1 (hli1) Rails ACSLS: ❏ Contact Information: HSC: ❏ Operating System: Connectivity: Location: Partition ID 2...

  • Page 154: Caps And Partitions

    Note: A reservation of the CAP can be released or overridden by any host joined to the same partition using HLI, not just the host that issued the reserve. 132 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 155: Overriding A Cap Reservation

    Partitioning • In some cases, however, you may not be able to access the host holding the reservation and therefore cannot perform a “clean” release of the CAP. In these cases, you can use the StreamLine Library Console (SLC) to override the CAP reservation.
  • Page 156 6. Go to Tools ➪ System Detail and click Refresh. 7. Select the CAP Folder ➪ CAP ➪ Unreserve tab and verify that the CAP is not reserved (None). 134 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 157: A: Structural Elements

    This appendix describes the library walls, explains how the numbering scheme works, and tape drive locations and numbers. ■ Types of Library Walls and Storage Slots The SL8500 library has two types of walls: • Outer walls–consist of 13-slot arrays with space for the robotic rails •...

  • Page 158: Internal Addressing Design

    Cartridge cell locations in previous libraries were listed by: Panel, Row, and Column. Cartridge slot designations in an SL8500 library uses five parameters: Library, Rail, Column, Side, Row (L,R,C,S,W): 1. Library: Is the number of that library or within a library complex 2.
  • Page 159 Structural Elements Figure 39. Internal Addressing Map Poster—Part Number TP0012 These posters can be ordered through Sun Learning Services (SLS). TM0017 • Revision B Appendix A Structural Elements 137...

  • Page 160: Tape Drives

    Structural Elements Tape Drives All of the tape drives in the SL8500 library are physically located in the Drive and Electronics Module and are identified in the same way that the tape cartridges are—using the five parameters: Library, Rail, Column, Side, and Row.

  • Page 161: Table 22. Software Drive Numbering

    Structural Elements The tape drives are associated with and belong to an LSM. To mount a cartridge tape in a different LSM, the cartridge must go through an internal pass-thru operation (in this case, the elevator) to the drive. Table 22 shows the internal—software—mapping (viewed from looking inside the library at the tape drives), and Table 23...
  • Page 162 Structural Elements 140 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 163: B: Comparisons

    Two or more libraries joined together with multiple PTPs. In this configuration, all libraries operate in a peer-to-peer relationship. The concepts of “master” and “standby” do not apply to SL8500 libraries. Power rail One of four sections in a library that provides: •...

  • Page 164: Contrasts Between Libraries

    Comparisons ■ Contrasts Between Libraries Many concepts and terms used for earlier libraries apply to SL8500 libraries. However, many terms for the SL8500 have been modified from their original meanings. As the SL8500 library product is substantially different from earlier...
  • Page 165 Library Storage Module (LSM): Storage Rail: Each rail within an SL8500 is designated module, up to sixteen per ACS (LMU). as one LSM (4 LSMs per SL8500 Library) by host software. Master PTP: The controlling PTP; its commands Home library: Home denotes the library originate from the LCU that contains the LP/LPP supplying power and communication to the PTP.

  • Page 166: Capacity Comparison With 9310 Libraries

    HandBot hand assembly. Capacity Comparison with 9310 Libraries The advantages of the SL8500 library can be seen when compared to a 9310 ACS that contains three, dense pack library storage modules (LSMs). Three 9310 LSMs provide storage for 33 cartridges per 0.1 m...

  • Page 167: Library Comparisons

    Comparisons ■ Library Comparisons Because the SL8500 is a new library, a comparison between the existing Powderhorn, 9310 might help to put things into perspective. • Table 26 compares libraries between weights, measures, and capacities • Table 27 compares power requirements Table 26.
  • Page 168 Comparisons Table 26. Comparisons Between PowderHorn and the SL8500 Library (Continued) 9310 PowderHorn SL8500 Service Clearances LSM (door opening) 86.36 cm (34 in.) Front 66 cm (26 in.) 39.0 cm (15.4 in.) Rear 85 cm (33.5 in.) 81.3 cm (32.0 in.) Pass-thru ports 15.25 cm (6 in.)
  • Page 169 Comparisons Table 26. Comparisons Between PowderHorn and the SL8500 Library (Continued) 9310 PowderHorn SL8500 Capacities Tape drives (max) Tape drives (max) single library 80 (four 9741e) single library complex 2,048 Tape cartridges (max) Tape cartridges (max) single library 6,000 (5,500)

  • Page 170: Table 27. Power Requirement Comparisons

    Example (maximum case): Example (maximum case): Example (maximum case): For a Powderhorn LCU, LSM with 2 LMU's and For a SL8500 with 4 robots, 2 ECM's and 16 SL8500 with 8 robots and 16 16 T9X40 drives: T9X40 drives: T9X40 drives:...

  • Page 171: Glossary

    Glossary This glossary defines terms and abbreviations in this and other SL8500 Data Facility Storage Management library related publications. Subsystem (DFSMS) An operating This glossary defines terms and environment that helps automate and abbreviations used in this publication. centralize the management of storage. To...
  • Page 172 The information about the MVC is stored in the HSC control data set (CDS). tape cartridge A protective container that consists of magnetic tape on supply and take-up reels. 150 SL8500: Best Practices • March 2007 Revision B • TM0017...
  • Page 173 Glossary Virtual Tape Drive (VTD) The emulation of TAPEREQ An HSC control statement that a physical tape drive in virtual tape storage defines a specific tape request and consists subsystem. The data written to a VTD is of two parts, input and output. really being written to disk.
  • Page 174 Glossary 152 SL8500: Best Practices • March 2007 Revision B • TM0017...

  • Page 175: Index

    Index Numerics arrays locating the cartridges, 6, 136 9310 targets, 6, 135 comparisons, 2 assessment, 119 library specifications, 145 audience, xv 9741e Drive Cabinet, 146 audit non-labeled cartridges, 34 time estimates, 30 types, 29 away library, definition, 141 ABARS, 68 access door operations, 28 ACSLS adding libraries, 83...
  • Page 176 38 layouts, 139 commands, 26 VSM, 58 optimization, 38 VSM, 57 sequence, ExLM, 66 content management elevators cartridges, 37 configuration, 13 drives, 37 content management, 40 elevators, 40 154 SL8500: Best Practices • March 2007 Revision B • TM0017...
  • Page 177 Index description, 12 slot descriptions, 135 gateway, 97 Engineered Data Products, labels by, 32 graphical user interface (GUI), 128 enter guides and related publications, xvii cartridges, 38, 72, 74 commands, 26 optimization, 38, 74 Ethernet interface, 22 ExLM HandBots management philosophy, 66 description, 12 overview, 65 workload optimization, 39...
  • Page 178 28 managing cartridges ACSLS, 74 ExLM, 66 for optimization, 37 operator panel, 9, 128 HSC, 46 See also SLC VSM, 63 optimization guidelines manuals, xvii access door, 28 156 SL8500: Best Practices • March 2007 Revision B • TM0017...
  • Page 179 Index ACSLS, 71 slot descriptions, 135 audits, 29 pen and stylus, 9 basic, 26 Performance Zone, 66 cartridge float, 26 philosophy for content management, 35 cartridges, 38, 72, 74 physical audit, 29 details, 36 physical limits, 25 elevators, 40 placement of data cartridges, 6, 135 fast load, 26 planning for content, 41, 119 float, 26...
  • Page 180 142 HSC, 56 terminology in manual, xv square foot/meter of the library, 145 TLC/FSM, 93 steps for partitioning, 118 TMS, 65 Storage Expansion Module top rail usage, 37, 41 158 SL8500: Best Practices • March 2007 Revision B • TM0017...
  • Page 181 Index total area weights and measures, 2 in general, 2 workload optimization, 36 library, 145 Writeline, labels by, 32 total weight of the library, for comparison, 145 touch screen operator panel, 9 See SLC training, xviii zone, performance, 66 translating addresses, 10 Tricode, labels by, 32 types of audits, 29 unreserving the CAP, 21...
  • Page 182 Index 160 SL8500: Best Practices • March 2007 Revision B • TM0017...
  • Page 184 ORLDWIDE : 1-650-960-1300 EADQUARTERS THE NETWORK IS THE COMPUTER Sun Microsystems, Inc. All rights reserved. Sun, Sun Microsystems, and the Sun logo are trademarks or registered trademarks of Sun Microsystems, Inc. in the SUN™ ©2006 United States and other countries.

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