Compaq StorageWorks TM RAID Array 3000 Pedestal Storage Subsystem Uživatelská příručka Strana 23
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Hodnocené. / 5. Na základě hodnocení zákazníků
Product Overview 1-7
Compaq Confidential – Need to Know Required
Writer: Bob Young Project: RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Comments:
Part Number: EK-SMCPO-UG. C01 File Name: b-ch1 Product Overview.doc Last Saved On: 12/4/00 1:51 PM
■
32 Logical Unit (LUNs) per host channel (some operating systems may
be limited to 8)
■ Support for Hot and Warm spare disks
■ UPS-backed write caching
■ Per LUN write cache/write back selection
■ Configuration/Maintenance via RS-232 or host SCSI channel using
StorageWorks Command Console (SWCC)
■ Update of firmware via host channel
Pedestal Power Supplies
The pedestal has two interchangeable, air-cooled, AC power supply modules
located at the rear of the unit. The power supplies provide redundant power if
one of the units should malfunction. Each supply provides +5 and +12 VDC to
power the RAID controller, EMU, and the storage SBBs in the pedestal. In
addition, each unit contains a high-speed fan for pedestal cooling. The upper
power supply is designated as A and the lower as B. The unit contains an AC
power receptacle, a power status LED, a fan, and a latching slider switch to
secure the supply in the pedestal.
UPS
The UPS is separate and free-standing unit designed to protect the pedestal
from problems associated with poor quality AC power or a complete loss of
AC power. The UPS is connected between the AC outlet and the line input of
the pedestal power supply B to provide battery backup power.
The major features of the UPS include Cell Saver Technology (doubles battery
life and speeds recharge time), hot-swap batteries, and network surge
protection. The front panel display has user controls (LEDs and control
buttons) and the rear panel contains a COMM port, which provides UPS status
to the EMU in the pedestal. The rear panel also contains the network surge
protector, a reset button, and four power receptacles. An audible alarm is
activated when input power fails, as a Low Battery Warning, or whenever the
UPS is in need of servicing.
The UPS automatically recharges its battery when power is returned following
a power failure. Recharge time is four to six hours depending on the energy
requirements of your load and the length of the power outage.
- Compaq StorageWorks 1
- Contents 3
- Chapter 2 4
- Chapter 3 4
- Chapter 4 5
- Chapter 5 5
- List of Figures 5
- List of Tables 7
- About This Guide 9
- Related Documents 11
- Text Conventions 12
- Symbols in Text 13
- Symbols on Equipment 13
- This is a test 14
- Rack Stability 15
- Getting Help 15
- Compaq Website 16
- Compaq Authorized Reseller 16
- Product Overview 17
- PEDESTAL 18
- Table 1-1 19
- Pedestal Features 20
- Pedestal Cabinet 20
- Product Overview 1-5 21
- Pedestal Components 22
- Pedestal Power Supplies 23
- Product Overview 1-9 25
- UltraSCSI Buses 26
- Table 1-2 29
- Table 1-3 30
- Table 1-4 31
- (Y-cable connection cabling) 31
- Rear View of DS-SWXRA-GA 32
- Controller Pedestal 32
- Rear View of 32
- DS-SWXRA-GD 32
- Expansion Pedestal 32
- Specifications 33
- Table 1-7 34
- RAID Array Controller 35
- Controller Features 37
- Table 2-1 39
- Controller Specifications 39
- Environmental 41
- Performance Enhancements 43
- Write-Back Caching 44
- Write Gathering 45
- Write On Top 45
- RAID Levels Supported 46
- Figure 2-4. RAID 0 write 48
- RAID 0+1 49
- Table 2-5 50
- RAID 0+1 Example 50
- Redundant Operation 54
- Environmental 55
- Backup Power Management 56
- Voltage Monitoring 57
- Temperature Monitoring 58
- Board Temperature 59
- Table 2-11 59
- Maintenance 61
- SBB Status LEDs 63
- Controller LEDs 64
- EMU Error Reporting 65
- Replacing Components (FRUs) 66
- Removing the Pedestal Door 67
- Replacing an SBB 67
- Figure 3-4. Replacing an SBB 68
- Replacing a Power Supply 69
- Replacing the EMU Board 71
- Replacing the UPS 73
- Reconfiguring the SCSI Bus 74
- Maintenance 3-17 77
- Maintenance 3-19 79
- Expansion Pedestal Option 81
- Expansion Pedestal Cabinet 82
- EXPANSION PEDESTAL 83
- Expansion Pedestal Components 84
- SCSI cable 17-04454-01 86
- SHR-1495 87
- Connect Jumper Cable 89
- Remove Knockout 90
- Connect SCSI Cable 91
- Pedestal 94
- Expansion 94
- Pedestal 94
- Second Controller Option 97
- Second Controller Option Kit 98
- Installing the Upgrade 99
- Updating Firmware 100
- Shutting Down the RA3000 102
- Replacing Existing Controller 104
- Restoring the Configuration 105
- Operation 108
- HSZ22 StorageWindow) 110
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