Hp 3000 Enterprise Virtual Array Manuel d'utilisateur Page 155
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caching
A cache manag ement m etho d used to decrease the subsystem response time to
a read request by allowing the controller to satisfy the request from the cache
memor y rather than from the disk drives.
reconstruction The process of regenerating the contents of a failed member data. The
reconstruction process writes the data to a spare set disk and incorporates the
spare set disk into the mirrorset, striped mirrorset or RAID set from which the
failed member came.
redundancy 1. ElementRedundancy—Thedegreetowhichlogicalorphysicalelements
are protected by having another element that can take over in case of
failure. For example, each l oop of a device-side loop pair normally works
independently but can take over for the other in case of failure.
2. Data Redundancy—The level to which user data is protected. Redundancy
is directly proportional to cost in terms of storage usage; the greater the
levelofdataprotection,themorestoragespaceisrequired.
redundant power
configuration
A capability of the Enterprise storage system racks and enclosures to allow
continuous system operation by preventing single points of power failure.
• For a rack, two AC power sources and two power condi
tioning units
distribute primary and redundant AC power to enclosure power supplies.
• For a controller or drive enclosure, two power supplies ensure that the DC
power is available even when there is a failure of
one supply, one AC
source, or one power conditioning unit. Implementing the redundant power
configuration provides protection against the loss or corruption of data.
reporting group An Enterprise Storage System controller pair a nd the associated disk drive
enclosures. The Enterprise Storage System controller assigns a unique decimal
reporting group number to each EMU on its loops. Each EMU collects disk
drive environmental information from its own sub-enclosure and broadcasts the
data over the enclosure address bus to all members of the reporting group.
Information from enclosures in other reporting groups is ignored.
room temperature See a mbient temperature
SCSI 1. Small Computer System Interface. An American National Standards Institute
(ANSI) interface which defines the physical and electrical parameters of
a parallel I/O bus used to connect computers and a ma ximum of 16 bus
elements.
2. The communication protocol used between a controller pair and the hosts.
Specifically, the protocol is Fibre Channel drive enclosure or SCSI on Fibre
Channel. SCSI is the higher command-level protocol and Fibre Channel
is the low-level transmission protocol. The controllers have full s upport for
SCSI-2; additionally, they support some elements of SCSI-3.
SCSI-3 The ANSI standard that defines the operation and function of Fibre Channel
systems.
SCSI-3 Enclosure
Ser vices
See SES.
selective presenta-
tion
The process whereby a controller presents a virtual disk only to the host
computer which is authorized access.
serial transmission A method of transmission in which each bit of information is sent sequentially on
a single channel rather than simultaneously as in parallel transmission.
SES SCSI-3 Enclosures Services.
Those services that establish the mechanical
environment, electrical environment, and external indicators and controls for the
proper operation and m aintenance of devices within an enclosure.
HP StorageWorks 3000/5000 Enterprise Virtual Array user guide (VCS 4.xxx)
155
- Part number: 5697-7026 1
- Contents 3
- About this guide 13
- Rack stability 14
- HP technical support 14
- Customer self repair 15
- Product warranties 15
- Subscription service 15
- HP websites 15
- Documentation feedback 15
- 1 Enterprise Virtu al Array 17
- Performance 18
- Scalability 18
- Operating system support 18
- Storage system components 19
- Controller soft ware 20
- Hardware 20
- Fibre Channel drive enclosure 21
- Fibre Channel lo 22
- HSV110 and HSV100 controllers 22
- P = Fibre (Host) Port 26
- CA = Fibre Channel Adapter 26
- Gathering information 27
- Host information 28
- Entering the WW 29
- Entering the WWN checksum 29
- Installing opti 31
- 3 Enterprise Virtu al Array 33
- Setting Point in time 34
- Behavior 34
- Storage s ystem s 37
- Creating disk groups 40
- Adding a disk driv e 41
- Changing the De 42
- Installing the disk drive 42
- Checking status indicators 42
- Handling fiber optic cables 43
- 4 Enterprise Virtu al Array 45
- I/O m odules 46
- I/O module status indicators 47
- Fi bre Optic Fibr 49
- Copper Fibre Channel cables 49
- Fibre Channel disk drives 49
- Disk drive stat 50
- Disk drive status displays 50
- Power supplies and blowers 51
- Power supplies 52
- Drive enclosure EMU 53
- EMU functions 54
- EMU monitoring functions 55
- EMU displays 55
- EMU indicator di 56
- Audible alarm operations 57
- Enabling the audible alarm 58
- Muting or unmut 59
- Disabling the audible alarm 59
- Enclosure numb 60
- Error Condition Reporting 62
- Reporting group feature 65
- Fibre Channel loop switches 66
- Power-on self test (POST) 67
- Reading the switch indicators 67
- HSV controllers 69
- High availability features 70
- Operator control panel 70
- Status indicators 71
- Navigation butt 72
- Alphanumeric display 72
- Displaying the OCP menu tree 72
- Displaying system information 73
- Shutting down the system 74
- Shutting the controller down 74
- Restarting the system 75
- Uninitializing the system 75
- Password options 75
- Changing a password 75
- Clearing a password 76
- Cache bat tery 77
- HSV controller cabling 77
- Rack configurations 77
- Power d istribution 77
- Rack AC po 80
- Moving and stabilizing a rack 82
- 1. H ex n ut 83
- 2. Leveler foot 83
- Customer self 85
- Replaceable parts 86
- Before you begin 88
- Types of disk failures 89
- Checking system re dundancy 89
- Verifying component failure 90
- 1. Ac t ivi t y 92
- 2. Online 3. Fault 92
- Removing a di 93
- Installing a disk 94
- Verifyin 94
- Removing a b 97
- Installing a blower 97
- Removing a po 98
- Installing a p ower supply 98
- Verifying proper operation 99
- Customer replaceable units 100
- A Regulatory notices an d 101
- Laser device 102
- European union notice 103
- Notice for Fra 104
- WEEE Recycling Notices 104
- French notice 105
- German notice 105
- Estonian notice 105
- Finnish notice 105
- Greek notice 106
- Hungarian notice 106
- Italian n 106
- Latvian notice 106
- Lithuanian notice 107
- Polish notice 107
- Portugue 107
- Slovakian notice 107
- Germany noise declaration 108
- Japanese notice 109
- Taiwanese notice 109
- Japanese 109
- Country-specificcertifications 109
- Physical specifications 110
- Power speci 111
- fications 111
- Fibre Channel sw 113
- Controller specifications 113
- Rack specifications 114
- Environmental specifications 116
- Power specifications 116
- Nominal inp ut voltage 117
- Specifications 117
- The power 117
- Condition report format 119
- Correcting err ors 120
- Power supply conditions 122
- 0.2.en.02 123
- Blower conditions 124
- Temperature conditions 125
- 0.4.en.01 N 126
- 0.4.en.03 NON 127
- EMU conditions 128
- Transceiver conditions 132
- 0.F.en.05 C 133
- Backplane conditions 135
- I/O Module conditions 135
- Host conditions 137
- C Controller fault management 139
- GUI event display 140
- Fault management displays 140
- Information type 142
- Description 142
- Glossary 143
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