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Summary of Contents for Digital Equipment SF72
- Page 1 SF72 Storage Enclosure and SF200 Storage Array Owner’s Manual Order Number EK–SF72S–OM–001 Digital Equipment Corporation...
- Page 2 First Edition, January 1991 The information in this document is subject to change without notice and should not be construed as a commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no responsibility for any errors that may appear in this document.
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Page 3: Table Of Contents
3.2.1 SF72 OCP ........ - Page 4 Front View of the SF72 Storage Enclosure ....3–6 3–6 SF72 Switchpacks ....... . . 3–9 3–7 SF72 Controls and Indicators .
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Page 5: About This Manual
SF200 storage array. • Chapter 3, Storage Enclosure Operation, describes how to start up the SF72 storage enclosure and how to bring the disk ISE on line for normal operation. • Chapter 4, Troubleshooting, contains simple instructions for troubleshooting the installation of the SF200 storage array and SF72 storage enclosure. -
Page 6: Introduction
Introduction 1.1 SF200 Storage Array Overview The SF200 storage array is a storage rack cabinet designed to hold SF72 storage enclosures and magazine tape subsystems. The SF200 storage array is intended to be installed in one or both sides of a host system. All operator control panels (OCPs) project through the front door of the storage array to allow easy access. -
Page 7: Front View Of The Sf200 Storage Array
1–2 Introduction L E V E L 4 L E V E L 3 L E V E L 2 L E V E L 1 S H R _ X 1 1 0 1 _ 8 9 Figure 1–1 Front View of the SF200 Storage Array... -
Page 8: Sf200 Storage Array Specifications
50 cubic feet per minute (0.026 cubic meters per second) The minimum configuration is an SF200–Bx with one SF72–HK. The maximum configuration is an SF200–Jx that consists of six SF72–JK enclosures and two magazine tape subsystems. These limits are for optimum equipment performance and reliability. -
Page 9: Sf72 Storage Enclosure Overview
These limits are for optimum equipment performance and reliability. 1.2 SF72 Storage Enclosure Overview The SF72 is a storage enclosure designed to be installed into an SF200 storage array or certain system cabinets (Figure 1–2). A single enclosure holds two or four RF72 disk integrated storage elements (ISEs). Each disk ISE is independently controlled by the SF72 OCP. -
Page 10: Sf72 Storage Enclosure
Introduction 1–5 SHR_X1123C_89 Figure 1–2 SF72 Storage Enclosure... - Page 11 • The drive dc power switches for the disk ISEs are on the front panel of the SF72 enclosure. Each switch contains a symbol to indicate its associated disk ISE and an LED that lights when power is applied to that disk ISE.
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Page 12: Sf72 Storage Enclosure Specifications
0.5 micron or larger Air volume (at inlet) 50 cubic feet per minute (0.026 cubic meters per second) The SF72–HK contains two RF72 disk ISEs. The SF72–JK contains four RF72 disk ISEs. These limits are for optimum equipment performance and reliability. -
Page 13: Related Documentation
1–8 Introduction Table 1–2 (Cont.) SF72 Storage Enclosure Specifications Characteristic Specification Recommended Environmental Limits Nonoperating environment Temperature -40°C to +66°C (-40°F to +151°F) Relative humidity 10% to 80%, noncondensing Altitude 4900 meters (16,000 feet) SF72 enclosure acoustic noise 6.2 bells Nominal airflow through enclosure... -
Page 14: Sf200 Storage Array Site Preparation
SF200 Storage Array Site Preparation The SF200 storage array is intended for installation in a Class A computer room environment. It must be operated in an environment that meets the conditions specified in Table 1–1. Before installing the SF200 storage array, make sure the following conditions are met: •... -
Page 15: Single-Host System Configuration Sheet
2–2 SF200 Storage Array Site Preparation K F M S A / D S S I S i n g l e - h o s t C o n f i g u r a t i o n S h e e t K F M S A X M I N o d e # B u s 1 B u s 2... -
Page 16: Dual-Host System Configuration Sheet
SF200 Storage Array Site Preparation 2–3 K F M S A / D S S I D u a l - h o s t C o n f i g u r a t i o n S h e e t K F M S A X M I N o d e # B u s 1 B u s 2... -
Page 17: Sf72 Storage Enclosure Operation
The SF72 storage enclosure is available with either two or four RF72 disk integrated storage elements (ISEs) installed. The two-ISE variant is referred to as an SF72–HK, and the four-ISE variant is referred to as an SF72–JK. SF72 storage enclosures residing in the SF200 storage array can be connected to a single host (or system) or to two hosts. -
Page 18: Single-Host Bus Configurations
3–2 SF72 Storage Enclosure Operation S F 7 2 M a g a z i n e S F 7 2 S F 2 0 0 I / O T a p e S t o r a g e... -
Page 19: Through-Bus Mode
3.1.1 Through-Bus Mode In through-bus mode, all four disk ISEs in the SF72–JK storage enclosure operate on or are part of the same DSSI bus. The DSSI bus enters the enclosure from the rear, at the rightmost DSSI connector. The DSSI... -
Page 20: Split-Bus Mode
The SF72–HK variant operates in through-bus mode, in a similar fashion, but only the rear two disk ISEs are used. An SF72–UK upgrade kit consisting of two RF72 disk ISEs can be added to an SF72–HK at any time. 3.1.2 Split-Bus Mode In split-bus mode, two disk ISEs in the SF72–JK storage enclosure... -
Page 21: Sf72 Front Panel Controls, Labels, And Indicators
The SF72–HK variant operates in split-bus mode, in a similar fashion, but only the rear two disk ISEs are used. An SF72–UK upgrade kit consisting of two RF72 disk ISEs can be added to an SF72–HK at any time. 3.2 SF72 Front Panel Controls, Labels, and Indicators Figure 3–5 shows a front view of the SF72 storage enclosure. -
Page 22: Front View Of The Sf72 Storage Enclosure
D R I V E D C P O W E R S W I T C H E S S H R - X 0 1 2 6 A - 9 0 Figure 3–5 Front View of the SF72 Storage Enclosure... -
Page 23: Summary Of Sf72 Front Panel Control/Indicator Functions
SF72 Storage Enclosure Operation 3–7 Table 3–1 Summary of SF72 Front Panel Control/Indicator Functions Control/Indicator Function Operator Control Panel TERM PWR indicator Indicates when termination power is being supplied. SPLIT indicator Indicates when enclosure is in split-bus mode. MSCP enable switch (Leftmost bit) Enables or disables the disk ISE. - Page 24 The two indicators behind the OCP door are TERM PWR (termination power, top) and SPLIT (bus mode, bottom). The TERM PWR indicator lights green whenever the SF72 storage enclosure is connected to a DSSI bus. The SPLIT indicator lights green only when the enclosure is operating in split-bus mode, as described in Section 3.1.2.
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Page 25: Sf72 Switchpacks
SF72 Storage Enclosure Operation 3–9 d i g i t a l Write DSSI DSSI Write Ready Fault Ready Fault Protect Protect S H R _ X 1 1 2 8 B _ 8 9 Figure 3–6 SF72 Switchpacks... -
Page 26: Dssi Id Switch Settings (Single-Host)
3–10 SF72 Storage Enclosure Operation Table 3–2 DSSI ID Switch Settings (Single-Host) Disk ISE Setting Positions 1, 2, 4, and 7 Left Rear (LR) Left Front (LF) Right Front (RF) Right Rear (RR) Positions 3 and 8 Left Rear (LR) -
Page 27: Sf72 Controls And Indicators
SF72 Storage Enclosure Operation 3–11 The four 7-segment LED displays on the front of the OCP display these DSSI ID numbers. If a display is not lit, then that disk ISE position in the enclosure is not occupied by an RF72 disk ISE. -
Page 28: Drive Dc Power Switches
An indicator in each drive dc power switch illuminates to show that nominal power is being applied to the associated disk ISE. The switches are shown on the icon located on the front of the chassis of the SF72 enclosure. -
Page 29: Rear Panel Of The Sf72 Storage Enclosure
( B E H I N D P A N E L ) S W I T C H S H R - X 0 1 2 7 A - 9 0 Figure 3–8 Rear Panel of the SF72 Storage Enclosure... - Page 30 Perform the operation, then reconnect the cord. The ac power switch for the SF72 enclosure is in the center of the rear panel. Setting the ac power switch in the position labeled ‘‘1’’ applies power to the SF72. Setting the switch in the position labeled ‘‘0’’ removes power from the enclosure.
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Page 31: Applying Power To The Enclosure
4. Verify that the termination power indicator is on. 5. Verify that the bus mode indicator is on, only if that SF72 is in the split-bus mode. 6. Turn the drive dc power switch on. Verify that the green indicator... -
Page 32: Placing A Disk Ise On-Line
3–16 SF72 Storage Enclosure Operation 3.5 Placing a Disk ISE On-Line After power is applied to the SF72 enclosure, use the following procedure to place a disk ISE on-line. Perform all steps in the order in which they are presented. -
Page 33: Troubleshooting
SF72 storage enclosure operator control panel (OCP), as described in Section 4.2. 4.1 Verifying a Hardware Problem If your SF72 storage enclosure or an installed disk ISE is not operating correctly, check the following items before calling Digital Customer Services:... -
Page 34: Rear Panel Of The Sf72 Storage Enclosure
Rear Panel of the SF72 Storage Enclosure If this indicator is lit, immediately turn off the ac power switch on the bottom rear of the storage enclosure. Call Digital Customer Services. If the green fault indicator is not on, proceed as follows: a. -
Page 35: Front Panel Of The Sf72 Storage Enclosure
S H R - X 0 1 2 6 A - 9 0 Figure 4–2 Front Panel of the SF72 Storage Enclosure b. Verify site power by checking other equipment on the same line and the circuit breakers to the cabinet. - Page 36 Turn that switch off and resume operation on the remaining disk ISEs. d. Call Digital Customer Services. 3. If a single disk ISE is not communicating with the system controller or does not respond to control panel commands (all other disk ISEs are normal): a.
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Page 37: Recovering From A Disk Ise Fault Condition
1. Press the Fault button once. This causes the disk ISE to display an error code at the disk ISE’s indicator set on the SF72 OCP. The error code is displayed as a binary number in flashing lights across the indicator set. A flashing indicator signifies a 1; a dark indicator signifies a 0. -
Page 38: Glossary
Glossary ADAPTER A module that connects one or more device controllers to the host bus and hides many of the host bus requirements from the controller. The KFMSA module is an XMI to DSSI bus adapter. ALLOCATION CLASS A numerical value assigned to the ISE to indicate which host(s) on a cluster it will be served by. - Page 39 Glossary–2 DSSI Digital Storage System Interconnect. A DSA-based storage interconnect used by the KFMSA adapter and the RF- and TF-series integrated storage elements to transfer data and to communicate with each other. DUAL-HOST Storage configuration where DSSI ISEs are shared between two DSSI adapters and host systems.
- Page 40 SPLIT-BUS A mode of operation where the ISEs in the right side of an SF72 enclosure are connected to a different DSSI bus than those on the left side. In this mode, the DSSI buses are terminated by the TTM.
- Page 41 Glossary–4 THROUGH-BUS A mode of operation where all the ISEs in an SF72 enclosure are connected to the same DSSI bus. In this mode, the DSSI bus is terminated using an external terminator. TMSCP Tape Mass Storage Control Protocol. Application layer protocol that is used by the host to perform tape I/O operations and I/O control functions.
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Page 42: Index
Colored labels power supply, 3–14 dual-host, 3–8 Front panel single-host, 3–8 controls and indicators, 3–5 Configurations See SF72 storage enclosure Controls, labels, and indicators rear panel, 3–12 Hardware problem, verifying, 4–1 Controls and indicators front panel, 3–5 Icons, 3–7, 3–12... - Page 43 2 Index SF72 storage enclosure (Cont.) taking off-line, 3–16 Site preparation, SF200, 2–1 Split-bus mode, 1–6, 3–4 controls and indicators, 3–5 7-segment displays, 3–11 Termination power indicator, 3–8 Through-bus mode, 1–6, 3–3 Troubleshooting, 4–1 Powering up, enclosure, 3–15 Power supply fault indicator, 3–14...
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