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Note:

The hot-spare drive size depends on the data drive size.

Warning:

The disk drives are pre-formatted before the appliance is shipped. Do

not rearrange the disks from their original locations.

Figure 1-1

Veritas 5250 Appliance front panel disk slot assignments

Table 1-2

Veritas 5250 Appliance front panel disk drive configurations

Disk drive role

Disk drive size

RAID
Configuration

Slot

Boot / swap

1TB

RAID 1

0, 1

Log files

1TB

RAID 1

2, 3

User data

2TB (Available internal storage is 9.1TiB)

8TB (Available internal storage is 36.4TiB)

RAID 6

4 - 10

Hot-spare

RAID 6

About the disk drive LEDs

Each Veritas 5250 Appliance disk drive module contains two LEDs on the left side
of each module.

Figure 1-2

Veritas 5250 Appliance disk drive module LEDs

Amber Status LED

Green Activity LED

The LED Status descriptions are described in the following table.

About the Veritas 5250 Appliance

Veritas 5250 Appliance front panel disk drive configurations

Содержание 5250

Страница 1: ...Veritas 5250 Appliance Product Description Guide ...

Страница 2: ...thorization of Veritas Technologies LLC and its licensors if any THE DOCUMENTATION IS PROVIDED AS IS AND ALL EXPRESS OR IMPLIED CONDITIONS REPRESENTATIONS AND WARRANTIES INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE OR NON INFRINGEMENT ARE DISCLAIMED EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID VERITAS TECHNOLOGIES LLC SHALL NOT BE ...

Страница 3: ...ation is available on the Veritas website https www veritas com content support en_US dpp Appliances html Documentation feedback Your feedback is important to us Suggest improvements or report errors or omissions to the documentation Include the document title document version chapter title and section title of the text on which you are reporting Send feedback to APPL docs veritas com You can also...

Страница 4: ...ns 22 Veritas 5250 Appliance total I O on board and PCIe ports 23 Available I O configurations by slot for Veritas 5250 Appliance installations 24 QLE2692 dual port 16Gb Fibre Channel host bus adapter 24 Mellanox ConnectX 4 Lx EN MCX4121A ACAT Ethernet card 27 Chapter 2 Veritas 2U12 65 5TiB 72TB Storage Shelf 29 Storage Shelf overview 29 Usable appliance storage capacities 30 Components of the Sto...

Страница 5: ...ions 51 Veritas 2U12 65 5TiB 72TB Storage Shelf technical specifications 53 Environmental specifications 55 Protocol standards 56 Regulatory compliance and certification information 57 Product regulatory compliance 57 Product safety compliance 58 Product EMC Compliance Class A Compliance 58 Product ecology compliance 58 Electromagnetic compatibility notices 59 FCC Verification Statement USA 59 ICE...

Страница 6: ...ons About the Veritas 5250 Appliance front panel USB port About the 5250 Appliance control panel About the 5250 Appliance rear panel Veritas 5250 Appliance I O configuration options Veritas 5250 Appliance overview The Veritas 5250 Appliance is a hardware and software storage system that can scale to 429 4 TiB of available backup capacity It consists of a Veritas 5250 Appliance and up to six option...

Страница 7: ...5250 appliance is the revised 3 2 version that is shipped with each unit If a re image is ever necessary you must use the revised 3 2 software version About Veritas 5250 Appliance configurations To determine the right Veritas 5250 Appliance system for your environment you should consider the environment s future storage requirements over the lifetime of the system Veritas offers multiple I O confi...

Страница 8: ... allocated either in part or in whole to a deduplication pool or to an AdvancedDisk pool non deduplicated storage Performance and capacity 64GB up to a maximum of 512GB Note When you purchase the first expansion storage shelf the Storage Expansion kit that comes with the storage shelf includes a replacement of 256GB memory A Memory Expansion kit containing eight 32GB DIMM memory chip is needed to ...

Страница 9: ...st bus adapter cards preinstalled See Available I O configurations by slot for Veritas 5250 Appliance installations on page 24 Fibre Channel support PCIe 10 25 Gb Ethernet cards with Fibre Optic ports are available PCie 10 25 Gb Ethernet cards See About the 5250 Appliance rear panel on page 19 Rear panel ports Yes You can attach up to six optional storage shelves to the Veritas 5250 Appliance Depe...

Страница 10: ...th disk drives are removed The disk drives in slot 2 and slot 3 are configured as the RAID1 VOLUME1 device These disk drives store all of the log files The disk drives in slots 4 through 10 store user data They are configured as a RAID 6 array which uses block level striping with two parity blocks across each of the disk drives in the volume The appliance uses the disk drive that is located in slo...

Страница 11: ...Configuration Slot Boot swap 1TB RAID 1 0 1 Log files 1TB RAID 1 2 3 User data 2TB Available internal storage is 9 1TiB 8TB Available internal storage is 36 4TiB RAID 6 4 10 Hot spare RAID 6 11 About the disk drive LEDs Each Veritas 5250 Appliance disk drive module contains two LEDs on the left side of each module Figure 1 2 Veritas 5250 Appliance disk drive module LEDs Amber Status LED Green Acti...

Страница 12: ...blink Blinking amber Power on the disk drive has spun down Off Green Activity LED 2 Power on no disk drive activity Solid green Power on I O is being processed by the drive or Power on the disk drive is spinning up Blinking green About the Veritas 5250 Appliance front panel USB port The Veritas 5250 Appliance front panel includes a USB 2 0 compliant port that supports a data transfer rate of up to...

Страница 13: ... off See About the Power button LED states on page 18 Power button with integrated LED A The drive activity LED on the front panel indicates drive activity from the on board hard disk controllers Hard Drive Activity LED B The System ID button toggles the integrated ID LED and the blue server board LED on and off The system ID LED identifies the system for maintenance when it is racked with similar...

Страница 14: ...mmends that you do not enable NMI by pressing the NMI button NMI button recessed tool required for use E When depressed the System Cold Reset button re boots and re initializes the appliance System Cold Reset Button recessed tool required for use on non storage models F The System Status LED is bi color indicator that uses the colors green and amber to display the current health of the appliance T...

Страница 15: ...tion Criticality State Color System power is off AC and or DC System is in EuP Lot6 Off Mode System is in S5 Soft Off State Not ready Off The system is not operating No color Indicates that the system is running in S0 State and its status is Healthy The system is not exhibiting any errors AC power is present and BMC has booted and manageability functionality is up and running Healthy Solid on SO G...

Страница 16: ...ilable Battery failure BMC executing in uBoot Indicated by Chassis ID blinking at 3Hz System in degraded state no manageability BMC uBoot is running but has not transferred control to the BMC Linux Server will be in this state 6 8 seconds after BMC reset while it pulls the Linux image into flash Degraded The system is operating in a degraded state although still functional or The system is operati...

Страница 17: ...present Correctable memory error threshold has been reached for a failing DIMM when the system is operating in a non redundant mode Non critical The system is operating in a degraded state with an impending failure warning However the system is still functioning 1 Hz blink Amber Fatal alarm system has failed or shutdown CPU CATERR signal asserted MSID mismatch detected CATERR also asserts for this...

Страница 18: ...ation Processor family not identical Processor model not identical Processor core thread counts not identical Processor cache size not identical Unable to synchronize processor frequency Unable to synchronize QPI link frequency Critical non recoverable System is halted Solid on Amber About the Power button LED states The Power button is located on the Veritas 5250 Appliance control panel It is use...

Страница 19: ...ning Steady on ACPI Advanced Configuration and Power Interface S0 Mechanical is off and the operating system has not saved any context to the hard disk drive Off ACPI Advanced Configuration and Power Interface S5 About the 5250 Appliance rear panel The rear panel of the appliance has several access ports and other features which are displayed in the following figures Figure 1 6 Veritas 5250 Applia...

Страница 20: ...rative network that does not provide any backup data transfer For more information see the NetBackup 52xx Appliance Initial Configuration Guide Note Veritas does not support forming a NIC bond using eth0 NIC1 with other eth NIC ports 7 eth1 NIC2 host0 NetBackup Appliance eth1 NIC2 A 1 GbE port for general use 8 eth2 NIC3 privnic1 NetBackup Appliance eth2 NIC3 A 1 GbE port for general use 9 eth3 NI...

Страница 21: ...e port 2 is configured by default as Initiator If you want you can configure port 2 on both cards as Target and you can configure port 1 on both cards as Initiator Note You should not bond copper 1 Gb Ethernet ports that are installed in the appliance chassis with PCIe based 10 25 Gb Ethernet Fibre Channel ports Veritas appliances may include grounding studs in case your lab environment has such a...

Страница 22: ...lots are labeled 1 to 8 Slots 1 2 and 3 are located in PCIe riser card assembly 2 Slots 4 5 and 6 are located in PCIe riser card assembly 1 while slots 7 and 8 are located in PCIe riser card assembly 3 Figure 1 9 Rear panel riser assembly locations and PCIe slot number assignments The Veritas 5250 Appliance supports multiple PCIe based I O configuration options The following table shows the differ...

Страница 23: ... NIC E Slot 1 contains a factory installed PCIe RAID controller Veritas 5250 Appliance total I O on board and PCIe ports Table 1 9 Total number of Veritas 5250 Appliance on board and PCIe I O ports for each I O configuration 16 Gb Fibre Channel PCIe ports optical SFP 10 25 Gb Ethernet PCIe ports optical SFP 1Gb Ethernet ports copper I O Configuration option 0 2 4 on board A 2 2 4 on board B 4 6 4 ...

Страница 24: ... 10Gb network interface cards QLE2692 dual port 16Gb Fibre Channel host bus adapter Mellanox ConnectX 4 Lx EN MCX4121A ACAT Ethernet card 2 PCIe based 16Gb 25 10Gb network interface cards Mellanox ConnectX 4 Lx EN MCX4121A ACAT Ethernet card 3 PCIe based 16Gb Fibre Channel host bus adapter PCIe based 16Gb 25 10Gb network interface cards QLE2692 dual port 16Gb Fibre Channel host bus adapter Mellano...

Страница 25: ...ht Low profile PCIe card 6 6 inches 2 731 inches Form factor 9 3 W Power consumption watts 0 C to 55 C 32 F to 131 F Operating temperature 20 C to 70 C 4 F to 158 F Storage temperature 10 to 90 Operating humidity 5 to 95 Storage humidity 25 About the Veritas 5250 Appliance Veritas 5250 Appliance I O configuration options ...

Страница 26: ...us adapter LED indicator status activity Activity Amber LED Green LED Yellow LED Power off Off Off Off Power on pre firmware initialization On On On Power on post firmware initialization Blink Blink Blink Firmware error Blink alternately Blink alternately Blink alternately 4Gbps link input output I O activity On Blink Off Off 8Gbps link input output I O activity Off On Blink Off 16Gbps link input ...

Страница 27: ...at 10 25 Gbps Ethernet line rate speeds Table 1 13 Mellanox ConnectX 4 Lx EN MCX4121A ACAT Ethernet card specifications Specification Item Full Height Bracket height Typical 9 6 watts Maximum 15 0 watts Power consumption 0 C to 55 C 32 F to 131 F Operating temperature 40 C to 70 C 40 F to 158 F Storage temperature 90 RH operating non operating Storage humidity PCIe v3 0 System interface type 27 Ab...

Страница 28: ...cifications continued Specification Item 8 0 GT s gigatransfers per second 8 Lane Speed and slot width 10 25 Data rate supported per port 300 LFM linear feet per minute Air Flow minimum 28 About the Veritas 5250 Appliance Veritas 5250 Appliance I O configuration options ...

Страница 29: ...age Shelf Storage Shelf overview The optional Veritas 2U12 65 5TiB 72TB Storage Shelf is a 2U12 drive enclosure that contains twelve 8TB 7200 rpm SAS hard disk drives Available storage capacity of the storage shelf is 65 TiB Each disk drive can be accessed from the storage shelf s front panel The PCIe RAID controller is used to configure the disk drives 2 Chapter ...

Страница 30: ...orage shelf It uses a dual seven segment display for enclosure identification and a switch that is used for storage shelf configuration purposes The Storage Shelf serial number appears on a plastic panel on the left side of Power Cooling Module 0 PCM 0 The storage shelf serial number begins with the letters SH See Storage Shelf front panel components on page 31 See Storage Shelf rear components on...

Страница 31: ...ppliance Contact your Veritas account representative for details Note Spanning MSDP data across both Veritas 5250 Appliance internal storage and a storage shelf is not recommended as it may result in degraded performance Warning Failure to migrate MSDP data after you connect a storage shelf may result in degraded appliance throughput performance For more information about migrating MSDP data see t...

Страница 32: ...or Aperture Locked Anti Tamper Lock Unlocked Drive tray Status LEDs The following table describes the disk drive carrier LEDs Note that the combination of both LEDs provides the status Table 2 2 Veritas 2U12 65 5TiB 72TB Storage Shelf disk drive carrier LED status Fault amber LED Activity green LED Status OFF OFF No disk drive installed OFF Blinks during I O activity and during startup Drives are ...

Страница 33: ... Note For security purposes each drive tray is locked by default when the storage shelf is shipped from the factory To access a hard disk drive each storage bay must be unlocked using a T10 torx screw driver Storage Shelf control panel The Veritas 2U12 65 5TiB 72TB Storage Shelf control panel is installed on the front left side of the storage shelf 33 Veritas 2U12 65 5TiB 72TB Storage Shelf Compon...

Страница 34: ...e Fault LED illuminates when there is a system hardware fault The system hardware fault may be associated with a fault LED on a Power Cooling Module PCM or on an I O module Module Fault LED Power Cooling Module Cooling I O module status Amber 3 The Logical Status LED shows a change of status or a fault Typically these changes of status or faults are associated with the shelf s disk drives However ...

Страница 35: ...e Off Off On Amber Control Panel Power on test state Test state 5 seconds Single beep then double beep N A On Amber On Green Power On All functions good None Off Off On Green Any Power Cooling Module Fault Fan Fault or an over or under temperature issue Power Cooling Module Fault LEDs Fan Fault LEDs N A On Amber On Green Any I O module fault I O module LEDs N A On Amber On Green Enclosure Logical ...

Страница 36: ... S1 N A Flashing On N A Not Applicable For more information see the Veritas 5250 Appliance Hardware Installation Guide Storage Shelf rear components This section describes the rear panel features of the Veritas 2U12 65 5TiB 72TB Storage Shelf The following figure provides an overview of the components that comprise the Veritas 2U12 65 5TiB 72TB Storage Shelf rear panel Figure 2 4 Veritas 2U12 65 5...

Страница 37: ...ng Modules on page 41 See Power Cooling Module LEDs on page 42 Storage Shelf I O modules This section discusses the Veritas 2U12 65 5TiB 72TB Storage Shelf I O modules Figure 2 5 Veritas 2U12 65 5TiB 72TB Storage Shelf I O module The following figure and table provides details of the two Veritas 2U12 65 5TiB 72TB Storage Shelf I O module canisters 37 Veritas 2U12 65 5TiB 72TB Storage Shelf Compone...

Страница 38: ...er I O module 0 1 I O module 1 2 I O module Status LEDs See I O module Status LED location and conditions on page 39 3 mini SAS HD ports A B and C 4 Ethernet port debugging purposes only 5 RS232 jack debugging purposes only 6 SAS Activity LEDs See I O module SAS Activity LED location and conditions on page 39 7 38 Veritas 2U12 65 5TiB 72TB Storage Shelf Components of the Storage Shelf ...

Страница 39: ...d a fault condition On Module Fault amber The I O module is operating normally Off The I O module is on On Power green The I O module is off Off The I O module controller is being identified On ID blue See I O module SAS Activity LED location and conditions on page 39 See Storage Shelf I O modules on page 37 I O module SAS Activity LED location and conditions This section discusses the location of...

Страница 40: ...al Fault Any fault which causes operation of the cable to cease or fail to start For example an OVERCURRENT trip Flashing One second on one second off Flash with aggregate port activity Non Critical Fault Any fault which does not cause the connection to cease operation For example not all links established OVERTEMPERATURE condition detected See Storage Shelf I O modules on page 37 See I O module S...

Страница 41: ...he storage shelf continues to operate as the second PCM continues to supply the storage shelf with power Figure 2 9 Power Cooling Module 1 3 5 4 2 Table 2 9 Power Cooling Module components Component Number Power Cooling Module LEDs See Power Cooling Module LEDs on page 42 1 On Off switch 2 Release tab 3 AC power socket 4 41 Veritas 2U12 65 5TiB 72TB Storage Shelf Components of the Storage Shelf ...

Страница 42: ...ooling Module 0 tab Note The storage shelf serial number begins with the letters SH 5 Power Cooling Module LEDs Power Cooling Modules PCM use four LEDs to indicate the status of the PCM Figure 2 10 Power Cooling Module LEDs 1 3 2 4 42 Veritas 2U12 65 5TiB 72TB Storage Shelf Components of the Storage Shelf ...

Страница 43: ...Off Off No AC Power this Power Cooling Module only Off Off Off On AC Present Power Cooling Module On OK On Off Off On Power Cooling Module fan out of tolerance Off Off On Off Power Cooling Module fan fail On On On Off Power Cooling Module Fault Over temp over volts over current Off Off Off Flashing Standby Mode Flashing Flashing Flashing Off Power Cooling Module firmware download See Storage Shelf...

Страница 44: ...e Power cables Each of the AC power modules in the Veritas 5250 Appliance and in the optional Storage Shelf accept one AC power cable One end of the AC power cable is connected to the power supply on the appliance or the storage device The other end of the cable is connected to an external Power Distribution Unit PDU on the rack Power cables include a live line a neutral line and a grounding line ...

Страница 45: ...e Veritas 5250 Appliance technical specifications on page 51 See Multi Mode fiber optic cable on page 46 See SAS 3 cable on page 48 See Twinaxial copper cables on page 47 See Network cable on page 45 Network cable The appliance communicates with the Ethernet networks through an Ethernet network cable One end of the network cable connects to the management network port or service network port of th...

Страница 46: ...de fiber optic cable on page 46 See SAS 3 cable on page 48 See Twinaxial copper cables on page 47 Multi Mode fiber optic cable Figure 3 3 Multi Mode fiber cable 46 Veritas 5250 Appliance and Veritas 2U12 65 5TiB 72TB Storage Shelf cables Multi Mode fiber optic cable ...

Страница 47: ...opper cables on page 47 See Network cable on page 45 Twinaxial copper cables The Veritas 5250 Appliance communicates with Ethernet networks through high speed Twinaxial copper cables If you configure the appliance to communicate with 10 25 Gb Ethernet networks these cables connect to the 10 25Gb NIC card in the appliance These cables are also known as Direct Access Copper DAC cables and are availa...

Страница 48: ...t the optional Veritas 2U12 65 5TiB 72TB Storage Shelf to the Veritas 5250 Appliance SAS 3 cables have a mini SAS HD connector on both ends Two 1m SAS 3 cables are shipped with each Storage Shelf Longer SAS 3 cables are supported with the 2U12 Storage Shelf if needed for the configuration 48 Veritas 5250 Appliance and Veritas 2U12 65 5TiB 72TB Storage Shelf cables SAS 3 cable ...

Страница 49: ...e Power cables on page 44 See Multi Mode fiber optic cable on page 46 See Twinaxial copper cables on page 47 See Network cable on page 45 49 Veritas 5250 Appliance and Veritas 2U12 65 5TiB 72TB Storage Shelf cables SAS 3 cable ...

Страница 50: ...specifications Environmental specifications Protocol standards Regulatory compliance and certification information Product regulatory compliance Product safety compliance Product EMC Compliance Class A Compliance Product ecology compliance Electromagnetic compatibility notices FCC Verification Statement USA ICES 003 Canada CE Declaration of Conformity Europe VCCI Japan BSMI Taiwan A Appendix ...

Страница 51: ... per processor Cores 64 GB 256 GB 512GB Note When you purchase the first expansion storage shelf the Storage Expansion Kit that comes with the storage shelf includes 256 GB of memory that replaces the existing 64GB Additional 256GB memory kit is required when you add the fifth shelf System memory currently supported DDR4 RDIMM 8 x 8GB 64GB 8 x 32GB 256GB 16 x 32GB 512GB Memory type and configurati...

Страница 52: ...0V Black 4 ft The IEC 60320 C14 plugs into a Power Distribution Unit The IEC 60320 C13 plugs into an appliance or storage shelf power supply Note If your power distribution unit is not compatible with the IEC 60320 C14 plug then Veritas recommends that you purchase your power cable locally Make sure the power cable meets or exceed the indicated power rating See Power cables on page 44 AC power cab...

Страница 53: ...ling requirement with maximum external storage heat dissipation 100V 127 VAC 200V 240 VAC Operating voltage 90 Power conversion efficiency 70 dBA Acoustic noise See Veritas 2U12 65 5TiB 72TB Storage Shelf technical specifications on page 53 See Environmental specifications on page 55 Veritas 2U12 65 5TiB 72TB Storage Shelf technical specifications The following table provides technical specificati...

Страница 54: ...s and I O modules Storage Bay Bridge SBB 2 1 Hot swappable components 65 5TiB 72TB Usable storage capacity TB 28 kg 62 lbs Maximum weight fully populated 52 kg 115 lbs Shipping weight Height 8 89cm 3 5 approximately 2U Width 48 26cm 19 ICE rack compliant Depth 60 20cm 23 7 Dimensions Dual ported 12Gb s SAS drives Device types supported 12 Maximum drives per enclosure 256 watts per storage shelf Yo...

Страница 55: ...ations on page 55 Environmental specifications The following table lists the environmental specifications for the Veritas 5250 Appliance and the Veritas 2U12 Storage Shelf Table A 3 Veritas 5250 Appliance and Veritas 2U12 Storage Shelf environmental specifications Veritas 5250 Appliance Veritas 2U12 Storage Shelf Specification ASHRAE A2 10 C to 35 C 50 F to 95 F Operating temperature 25 C to 70 C ...

Страница 56: ...standards with which the Veritas 5250 Appliance and the Veritas 2U12 Storage Shelf comply Table A 4 Veritas 5250 Appliance Veritas 2U12 Storage Shelf standards compliance Version Standard Intelligent Platform Management Interface Specification Second Generation v2 0 Document Revision 1 0 IPMI 2 0 System Management BIOS SMBIOS Reference Specification Version 2 5 SMBIOS SAS 3 0 SAS Advanced Configur...

Страница 57: ...ocal regional rules and regulations The final configuration of your appliance product may require additional compliance testing This product is an FCC Class A device Integration of it into a Class B system does not result in a Class B device Product regulatory compliance The NetBackup appliance when correctly integrated per this guide complies with the following safety and electromagnetic compatib...

Страница 58: ... 22 CISPR 32 Emissions International EN55022 EN55032 Emissions Europe EN55024 EN55035 Immunity Europe EN61000 3 2 Harmonics Europe EN61000 3 3 Voltage Flicker Europe CE European Union VCCI Emissions Japan BSMI CNS13438 Emissions Taiwan CCC Certification China Product ecology compliance Use of banned substances are restricted in accordance with world wide regulatory requirements A Material Declarat...

Страница 59: ...he equipment is not installed and used in accordance with the instructions it may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to a radio or a television reception can be determined by turning the equipment off and on the user is encouraged to try to c...

Страница 60: ...ration of Conformity Europe This product has been tested in accordance to and complies with the Low Voltage Directive 2014 35 EU and EMC Directive 2014 30 EU The product has been marked with the CE Mark to illustrate its compliance VCCI Japan This is a Class A equipment Operation of this equipment in a residential environment could cause radio interference In such a case the user may be required t...

Страница 61: ...C cables multi mode fiber optic description 46 network description 45 power description 44 cables continued SAS 3 description 48 Twinaxial copper description 47 components front panel Storage Shelf 31 Veritas 2U12 65 5TiB 72TB Storage Shelf 31 Control panel Appliance system LED descriptions 13 appliance power button LED states 18 control panel Storage Shelf 33 control panel LED descriptions Storag...

Страница 62: ...lf 42 Storage Shelf 41 processor appliance 8 RAID levels 8 protocol standards Veritas 5250 Appliance Veritas 2U12 Storage Shelf 56 R RAID configuration Appliance 10 rear components Storage Shelf 36 Rear panel appliance features and connectors 19 S SAS Activity LED location and conditions I O modules Storage Shelf 39 serial number location Veritas 2U12 65 5TiB 72TB Storage Shelf 41 serial number lo...

Страница 63: ...U usable storage capacities appliance 30 USB port Appliance 12 V Veritas 2U12 65 5TiB 72TB Storage Shelf components 31 63 Index ...

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