Dell EMC Data Domain DS60 Hardware Manual
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Dell EMC Data Domain DS60 Hardware Manual

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Dell EMC Data Domain DS60 Expansion
Shelf
Hardware Guide
302-002-100
REV. 05

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Summary of Contents for Dell EMC Data Domain DS60

  • Page 1 Dell EMC Data Domain DS60 Expansion Shelf Hardware Guide 302-002-100 REV. 05...
  • Page 2 Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be the property of their respective owners. Published in the USA. Dell EMC Hopkinton, Massachusetts 01748-9103 1-508-435-1000 In North America 1-866-464-7381 www.DellEMC.com Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 3: Table Of Contents

    Verify the Operation of the New Shelves........88 Verifying shelf installation................89 Understanding the DS60 disk mappings............91 Add shelf capacity licenses.................92 Add storage license............... 92 Add enclosure disks to the volume............. 95 Appendix A Hardware Specifications Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 4 CONTENTS Hardware specifications................100 Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 5: Preface

    Preface Contact your Data Domain technical support professional if a product does not function properly or does not function as described in this document. Note This document was accurate at publication time. Go to the Online Support site, https://support.emc.com/, to ensure that you are using the latest version of this document.
  • Page 6 Your comments Your suggestions will help us continue to improve the accuracy, organization, and overall quality of the user publications. Send your opinions of this document to DPAD.Doc.Feedback@emc.com. Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 7: Revision History

    Revision history Table 2 Document revision history Revi Date Document Software Description sion part version number/ Revision number June 2017 302-002-100 Editorial revisions. Rev. 5 October 2016 302-002-100 New topics and cabling diagrams Rev. 4 as they relate to supporting DD6300, DD6800 and DD9300, andDD9800 systems April 2016...
  • Page 8 Revision history Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 9: Ds60 Shelf Installation Overview

    CHAPTER 1 DS60 Shelf Installation Overview Adding DS60 expansion shelves to a Data Domain system increases the storage capacity of the system. The expansion shelves are organized by sets (or chains). DD4200, DD4500, and DD7200 systems - Attach up to two expansion shelves per set (chain);...

  • Page 10: Site Requirements

    Each receptacle must be capable of safely supplying 0.94 amps from each power socket or 1.87 amps from each socket in case of a redundant circuit. Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 11: Licensing

    DS60 Shelf Installation Overview Licensing The appropriate capacity license is required for any added shelf. There are three tiers of storage—active, archive, and cache. A license is purchased and applied to one of these tiers. Note Only Data Domain Extended Retention (ER) systems have archive tier storage. Note Only Data Domain DD6300, DD6800 and DD9300 systems configured with SSDs, or those systems configured with an FS15 shelf have cache tier storage.

  • Page 12: Disk Enclosure Interior

    The disk fault LED glows amber when the disk has failed. Note The individual disk and fan LEDs are only visible when the disk enclosure is opened to verify the disks inside. Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 13 DS60 Shelf Installation Overview Figure 2 Fans and disk drives inside the disk enclosure Table 5 LED status lights Light Quantity Color Meaning Disk Active 1 per disk module Blue No LED when the slot is empty or Note has a filler Only visible after the module.
  • Page 14 1 purple, pack 2 is yellow, pack 3 is green, and pack 4 is pink. A pack must have the same size drives. Pack 1 is shown within the red rectangle. Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 15 DS60 Shelf Installation Overview Figure 3 Drives as packs The next table shows how the drives are distributed by packs (groups) and numbered physically. The bottom of the table represents the front of the shelf Table 6 Physical drives Rows Pack 1 Pack 2 Pack 3...

  • Page 16: Back Panel

    DC power to the system. The DS60 continues to run with a single power supply and two fans (out of the three fans). For part replacement information, refer to the DS60 Installation and FRU Replacement Guide. Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 17: Installing The Shelves

    CHAPTER 2 Installing the Shelves This chapter covers the following major topics: Expansion shelf cables..................18 Safety requirements................... 19 Racking and cabling................... 20 Rail kit........................20 Shelf cabling rules and guidelines................21 Installing or adding DS60 shelves............... 24 Requirements for combining DS60 and ES30 shelves........

  • Page 18: Expansion Shelf Cables

    (15 in a pack) in the correct position. Note Shelves for other Dell EMC product lines look identical. Check the product numbers when unpacking. DS60 cables...

  • Page 19: Safety Requirements

    Installing the Shelves Table 8 HD-mini-SAS to mini-SAS cable part numbers (continued) Cable Part Number Cable Length 038-000-214-00 5M (196 in.) Special cables must be used when attaching an ES30 to a chain with a DS60. Specifically, one HOST (circle) connection and one EXPANSION (diamond) cables are connected between the ES30 LCC and the DS60 LCC connection.

  • Page 20: Racking And Cabling

    Slide rail kit, DS60 Rail kit mounting brackets adjust in length from 24 inches to 32 inches to accommodate different rack depths. Note For details, see the DS60 Shelf Installation and FRU Replacement Guide . Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 21: Shelf Cabling Rules And Guidelines

    Installing the Shelves Shelf cabling rules and guidelines The Data Domain system re-discovers newly configured shelves after it restarts. You can power down the system and re-cable shelves to any other position in a set, or to another set. To take advantage of this flexibility, you need to follow these rules before making any cabling changes: Do not exceed the maximum shelf configuration values for your Data Domain system as listed in the table below.
  • Page 22 Expanded Capacity DD Cloud Tier DD Cloud Tier and w/ HA and DD 6, 7 Cloud Tier DD9500 SAS 45, 60 DD9500 Expanded SAS 45, 60 1080 DD9500 ER SAS 45, 60 1728 2160 Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 23 Installing the Shelves Table 11 Shelf configuration supported per Data Domain system for the DS60 shelf (continued) DD system Memory DS60 support Max RAW required cards/ (TB) shelves number external external (GB) port per per set of sets capacity capacity card available (TB)

  • Page 24: Installing Or Adding Ds60 Shelves

    Port 0 on Controller A using a DD cable. 2. Make a second connection from a different SAS I/O module of the Data Domain system to the Port 0 on Controller B using a DD cable. Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 25 Installing the Shelves Note The port to shelf cabling is different for each controller. Cabling details such as I/O port numbers can be found in the installation and configuration guide of your Data Domain system. Cable a set that contains multiple shelves Procedure 1.

  • Page 26: Requirements For Combining Ds60 And Es30 Shelves

    For HA pairs that have one or more ES30/FS15 shelves, the primary and standby nodes use different cables to connect to ES30/FS15 shelves. The primary node uses ES30/FS15 HOST (circle) connections, and the standby node uses ES30/FS15 EXPANSION (diamond) connections. Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 27: Dd4200, Dd4500, And Dd7200 Cabling

    Installing the Shelves Refer to the table and associated information in Shelf cabling rules and guidelines page 21 for shelf configuration restrictions. See the cabling instructions in this section that apply to your Data Domain system. DD4200, DD4500, and DD7200 systems - up to two DS60 expansion shelves per set (chain) DD6300 systems - only support one DS60 DD6800 and DD9300 systems - can support up to four shelves per set (chain)
  • Page 28 The following figures show cabling for base systems and systems with the Extended Retention software. Note It is recommended that the DS60 shelf with the greater number of drives should always be placed in the bottom position. Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 29 Installing the Shelves Figure 7 Recommended cabling for DD4200 (3TB drives) Note One DS60 shelf can have 60 drives and the second DS60 shelf can have 15 drives. DD4200, DD4500, and DD7200 cabling...
  • Page 30 With four shelves, two DS60 shelves can have 60 drives each and the other DS60 shelves can only have 15 drives each. It is also possible to configure two full DS60 shelves and one DS60 shelf with 30 drives. Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 31 Installing the Shelves Figure 9 Recommended cabling for DD4500 (3TB drives) DD4200, DD4500, and DD7200 cabling...
  • Page 32 Installing the Shelves Figure 10 Recommended cabling for DD4500 (3TB drives) with Extended Retention software Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 33 Installing the Shelves Figure 11 Recommended cabling for DD4500 with DD Cloud Tier DD4200, DD4500, and DD7200 cabling...
  • Page 34 Installing the Shelves Figure 12 Recommended cabling for DD4500 (4TB drives) Note DS60 shelf 2 will only have 30 drives. Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 35 Installing the Shelves Figure 13 Recommended cabling for DD4500 (4TB drives) with Extended Retention software Note All three of the DS60 shelves will be full. DD4200, DD4500, and DD7200 cabling...
  • Page 36 Installing the Shelves Figure 14 Recommended cabling for DD7200 (3TB drives) Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 37 Installing the Shelves Figure 15 Recommended cabling for DD7200 (4TB drives) Note Two DS60 shelves can have 60 drives and the third DS60 shelf can only have 15 drives. DD4200, DD4500, and DD7200 cabling...
  • Page 38 Installing the Shelves Figure 16 Recommended cabling for DD7200 (3TB drives) with Extended Retention software Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 39 Installing the Shelves Figure 17 Recommended cabling for DD7200 with DD Cloud Tier DD4200, DD4500, and DD7200 cabling...
  • Page 40 Installing the Shelves Figure 18 Recommended cabling for DD7200 (4TB drives) with Extended Retention software Note Four DS60 shelves have 60 drives each and two DS60 shelves have 15 drives each. Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 41: Dd6300, Dd6800 And Dd9300 Cabling

    Installing the Shelves DD6300, DD6800 and DD9300 cabling There are a few rules that must be followed when adding a mixture of DS60 and other shelf types to your system. CAUTION If a system does not follow all these rules, it is not a legitimate configuration. Prerequisites: You cannot exceed the maximum amount of raw capacity displayed in cabling table for each system.
  • Page 42 DD6300 only has one SAS SLIC and all DS60 connections are made to that single SAS SLIC. The cabling diagrams in this section show the maximum configurations for the DD6300, DD6800, and DD9300 systems. Not all systems will have all the disk shelves shown in the diagrams. Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 43 Installing the Shelves Figure 19 DD6300 DD6300, DD6800 and DD9300 cabling...
  • Page 44 Installing the Shelves Note DD6300 only has one SAS SLIC and all DS60 connections are made to that single SAS SLIC. Figure 20 DD6800 and DD9300 Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 45 Installing the Shelves Figure 21 DD6800 and DD9300 with HA DD6300, DD6800 and DD9300 cabling...
  • Page 46 Installing the Shelves Figure 22 DD6800 with DD Cloud Tier Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 47 Installing the Shelves Figure 23 DD6800 with HA and DD Cloud Tier DD6300, DD6800 and DD9300 cabling...
  • Page 48 Installing the Shelves Figure 24 DD9300 with DD Cloud Tier or HA and DD Cloud Tier Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 49: Dd9500 And Dd9800 Cabling

    Installing the Shelves Figure 25 DD6800 and DD9300 with ERSO DD9500 and DD9800 cabling There are a few rules that must be followed when adding a mixture of DS60 and ES30 SAS shelves to your system. CAUTION If a system installation does not follow all these rules, it is not a legitimate configuration.
  • Page 50 Extra planning and reconfiguration may be required to add DS60 shelves to system with ES20 shelves, ES30 SATA shelves, or a combination. ES20 shelves must be on their own set. Minimize the ES20 set count by combining up to four ES20s per set. Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 51 Installing the Shelves The ES20s are only supported in a DD9500 system for as long as it takes Shelf Migration software to allow them to be removed from the system. ES30 SATA shelves must also be on their own sets. Minimize the ES30 set count by combining up to five ES30s per set.
  • Page 52 Installing the Shelves Figure 26 Cabling for base DD9500 and DD9800 systems Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 53 Installing the Shelves Figure 27 Cabling for HA DD9500 and DD9800systems DD9500 and DD9800 cabling...
  • Page 54 Installing the Shelves Figure 28 Cabling for DD9500 and DD9800 systems with DD Cloud Tier Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 55 Installing the Shelves Figure 29 Cabling for HA DD9500 and DD9800 systems with DD Cloud Tier DD9500 and DD9800 cabling...
  • Page 56 Installing the Shelves Figure 30 Cabling for DD9500 and DD9800 systems with ERSO Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 57: Connecting Power

    Installing the Shelves Connecting power CAUTION When configuring a system, do not power on the Data Domain controller until you have powered on all of its attached shelves. See the figures in this section that display recommended power connections for several Data Domain systems.

  • Page 58: Attach The Power Supplies

    The DS60 powers on immediately after you attach one of the power supplies on the rear panel of the shelf to a PDU with power. Single phase power connections for 40U-P (current racks) The following figures show single phase power connections for several Data Domain systems. Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 59 Installing the Shelves Figure 32 Recommended single phase power connections for the DD4200, DD4500, and DD7200 systems Single phase power connections for 40U-P (current racks)
  • Page 60 Installing the Shelves Figure 33 Recommended single phase power connections for the DD9300 Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 61 Installing the Shelves Figure 34 Recommended single phase power connections for DD9300 with HA Single phase power connections for 40U-P (current racks)
  • Page 62 Installing the Shelves Figure 35 Recommended single phase power connections for DD9800 Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 63 Installing the Shelves Figure 36 Recommended single phase cabling for DD9800 with HA Note Single phase PDU with two DD9500 units, four DS60 shelves, and one FS15 shelf requires two power cords on each PDU pair. Single phase power connections for 40U-P (current racks)
  • Page 64 Installing the Shelves Figure 37 Recommended single phase power connections for the DS60 (full-racked) Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 65: 3-Phase Power Connections For 40U-P (Current Racks)

    Installing the Shelves Figure 37 Recommended single phase power connections for the DS60 (full- racked) (continued) Note Single phase PDU with one DD9500 and five DS60 shelves requires two power cords on each PDU pair. 3-phase power connections for 40U-P (current racks) Some environments use 3-phase power for 40U-P racks used for several Data Domain systems.
  • Page 66 Installing the Shelves Figure 38 Recommended 3-phase delta power connections for the DS60 expansion shelves (full-racked) Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 67 Installing the Shelves Figure 39 Recommended 3-phase delta power connections for DD4200, DD4500, and DD7200 systems 3-phase power connections for 40U-P (current racks)
  • Page 68 Installing the Shelves Figure 40 Recommended 3-phase delta power connections for DD9300 Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 69 Installing the Shelves Figure 41 Recommended 3-phase delta power connections for DD9300 with HA 3-phase power connections for 40U-P (current racks)
  • Page 70 Installing the Shelves Figure 42 Recommended 3-phase delta power connections for DD9500 system Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 71 Installing the Shelves Figure 43 Recommended 3-phase delta power connections for DD9800 3-phase power connections for 40U-P (current racks)
  • Page 72 Installing the Shelves Figure 44 Recommended 3-phase delta power connections for DD9800 with HA Note The next few diagrams show recommended 3-phase wye power connections. Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 73 Installing the Shelves Figure 45 Recommended 3-phase wye power connections for the DS60 expansion shelves (full- racked) 3-phase power connections for 40U-P (current racks)
  • Page 74 Installing the Shelves Figure 46 Recommended 3-phase wye power connections for DD4200, DD4500, and DD7200 systems Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 75 Installing the Shelves Figure 47 Recommended 3-phase wye power connections for DD9300 3-phase power connections for 40U-P (current racks)
  • Page 76 Installing the Shelves Figure 48 Recommended 3-phase wye power connections for DD9300 with HA Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 77 Installing the Shelves Figure 49 Recommended 3-phase wye power connections for DD9500 system 3-phase power connections for 40U-P (current racks)
  • Page 78 Installing the Shelves Figure 50 Recommended 3-phase wye power connections for DD9800 Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 79 Installing the Shelves Figure 51 Recommended 3-phase wye power connections for DD9800 with HA 3-phase power connections for 40U-P (current racks)
  • Page 80 Installing the Shelves Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 81: Data Domain-Specific Installation

    CHAPTER 3 Data Domain-Specific Installation This chapter shows the SAS I/O module and port location for each Data Domain system that supports the DS60 shelves. See the appropriate description for your Data Domain system. This chapter covers the following major topics: DD4200, DD4500, and DD7200 systems............82 DD6300, DD6800 and DD9300...

  • Page 82: Dd4200, Dd4500, And Dd7200 Systems

    Slots 7 and 8 are used for SAS I/O modules for systems without Extended Retention or DD Cloud Tier. Figure 53 Rear view (systems with Extended Retention software option or DD Cloud Tier) Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 83: Dd6300, Dd6800 And Dd9300 Systems

    Data Domain-Specific Installation Figure 53 Rear view (systems with Extended Retention software option or DD Cloud Tier) (continued) Note Slots 5 and 8 are used for SAS I/O modules for systems with Extended Retention or DD Cloud Tier. DD6300, DD6800 and DD9300 systems DD6300, DD6800 and DD9300 Onboard IO is on the left of the rear side of the SP.

  • Page 84: Dd9500 And Dd9800 Systems

    The following figure shows the location of the NVRAM and I/O modules. Figure 55 Location of NVRAM and I/O modules 1. NVRAM module—slot 0 2. I/O modules—slots 1 to 11 (See the I/O module slot assignments table.) Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 85 Data Domain-Specific Installation Figure 55 Location of NVRAM and I/O modules (continued) Note Slots 2, 3, and 6 (three I/O slots) are used for SAS I/O modules for systems without Extended Retention (ER). Note Slots 2, 3, 6, and 9 (four I/O slots) are for SAS I/O modules for systems with ER or DD Cloud Tier software.
  • Page 86 Table 16 DD9500 and DD9800 I/O module slot assignments (continued) Slot Base ER or DD Cloud DD Cloud Tier configuratio Tier and HA standby nodes in nodes in the HA the HA pair. pair. Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 87: Post-Installation Tasks

    CHAPTER 4 Post-Installation Tasks After you have installed and cabled the shelves in their racks, follow the instructions in this chapter to complete the setup. This chapter covers these major topics: Power on sequence....................88 Verifying shelf installation.................. 89 Understanding the DS60 disk mappings.............

  • Page 88: Power On Sequence

    6. If there are no amber LEDs, wait a few minutes after the final shelf was powered on before restarting the Data Domain system. Note If you are simply replacing an expansion shelf, there is no need to restart the Data Domain system. Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 89: Verifying Shelf Installation

    Post-Installation Tasks 7. Restart the Data Domain system. As the system boots up, the HOST/ EXPANSION LEDs on the shelf controller ports that are connected to the SAS I/O module in the Data Domain system change from off to blue or green. If any of these LEDs stays off or is not running at normal speed, it means there is a problem in the connection between the system and the shelf.
  • Page 90 15 Slots ES30 APM00111103544 Online 15 Slots -------- --------- -------------- ------ ------ ------- --------- 6 enclosures present. The output shows each recognized enclosure ID, Data Domain system model number, serial number, and slot capacity. Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 91: Understanding The Ds60 Disk Mappings

    Post-Installation Tasks 4. To verify that the system is in good running condition and shows no errors, enter the enclosure show topology command: # enclosure show topology Port enc.ctrl.port enc.ctrl.port ---- ------------- ------------- > 5.B.H: 5.B.E > 6.A.H: 6.A.E > 4.B.H: 4.B.E >...

  • Page 92: Add Shelf Capacity Licenses

    1. To add the first shelf capacity license, enter the license add command followed by one license key, separated with a space. For example: # license add xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xx Added "xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xx" : CAPACITY-ACTIVE feature for 32.7 TiB capacity DS60 Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 93 Post-Installation Tasks 2. To add the second shelf capacity license, enter the license add command followed by second license key, separated with a space. For example: # license add xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xx Added "xxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xx" : CAPACITY-ACTIVE feature for 32.7 TiB capacity DS60 enclosure-id command 3.
  • Page 94 Adding enclosure 3:1 to the active tier...Enclosure 3:1 successfully added to the active tier. Adding enclosure 3:2 to the active tier...Enclosure 3:2 successfully added to the active tier. Adding enclosure 3:3 to the active tier...Enclosure 3:3 successfully added to the active tier. Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 95: Add Enclosure Disks To The Volume

    Post-Installation Tasks Adding enclosure 3:4 to the active tier...Enclosure 3:4 successfully added to the active tier. Updating system information...done Successfully added: 3:1 3:2 3:3 3:4 done 9. After adding all four licences, enter the disk show state command to verify the disk state: # disk show state Enclosure...
  • Page 96 4. Enter the filesys enable command to enable the file system: # filesys enable 5. Enter the disk show state command to verify the disks: # disk show state Enclosure Disk Row(disk-id) 10 11 12 13 14 15 -------------- ---------------------------------------------- Data Domain DS60 Expansion Shelf Hardware Guide...
  • Page 97 Post-Installation Tasks |--------|--------|--------|--------| | Pack 1 | Pack 2 | Pack 3 | Pack 4 | E(49-60) v |v v |v v |v D(37-48) v |v v |v v |v C(25-36) v |v v |v v |v B(13-24) v |v v |v v |v A( 1-12)
  • Page 98 Post-Installation Tasks Data Domain DS60 Expansion Shelf Hardware Guide...

  • Page 99: Appendix A Hardware Specifications

    APPENDIX A Hardware Specifications This appendix contains the following topic: Hardware specifications................... 100 Hardware Specifications...
  • Page 100 Non-operating (shipping and storage) Ambient temperature: -40 F to 149 temperature (-40 C to 65 Temperature gradient: 45 F/hr C/hr) Relative humidity: 10% to 90% noncondensing Elevation: -50 to 35,000 ft (-16 to 10,600 Data Domain DS60 Expansion Shelf Hardware Guide...

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