Apple Xserve RAID User's guide Guide de l'utilisateur Page 22
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22 Chapter 2
m If there are devices in the system’s location that use large amounts of power, use surge
protectors or power conditions as part of the installation.
m Make sure that the power connections for the system and all other components are
grounded (according to local and national standards). Consult an electrician if you need
assistance with grounding.
m See Appendix A, “Specifications,” on page 83 for more information about electrical power
requirements for the system.
Operating Environment
The operating environment for the system’s rack must meet certain requirements:
m Verify that the temperature range of the rack’s location is within the limits established for
the system and all other components.
m Make certain that the rack’s location has adequate ventilation to maintain the necessary
temperature range. This is particularly important for a rack that is enclosed in a cabinet.
m If multiple components are installed in the rack, consider additional cooling to assure
efficient operation of the system and other equipment.
Security
To ensure the security of the system and rack, note the following:
m Determine that the rack’s location is secure and that only authorized staff members or
technicians can gain access to this location.
m If using a cabinet that is not stored in a secure room, be sure that the cabinet can be
locked securely and that access to it is limited to authorized staff.
m Develop a plan for distributing and controlling keys to the rack’s location and access
codes that will allow others to manage the system over the network. Keep the plan
updated with names of key staff and relevant emergency information and procedures.
m Store a copy of essential system access information in a safe place away from the system’s
location.
m Store the Xserve RAID documentation and related materials in a central location and
inform key staff of that location. Also post electronic documents on network locations to
which users of the system will have access.
Important When planning for electrical power, make sure you have more power than
the total power requirements specified for all components. Also make certain that the
power load is distributed evenly among circuits to the rack’s location. Consult an
electrician or other expert if you need assistance with planning for the power needs of
your components.
- User’s Guide 1
- Apple Computer, Inc 2
- Contents 3
- 7 RAID Overview 57 5
- 8 Planning RAID Storage 5
- Glossary 81 6
- Appendix A 6
- Specifications 83 6
- Appendix B 6
- About This Guide 7
- Introducing Xserve RAID 9
- Chapter 1 10
- Introducing Xserve RAID 11
- Chapter 2 20
- Xserve RAID 21
- Server 1 21
- Server 2 21
- Security 22
- Operating Environment 22
- Four-post open rack 23
- Four-post cabinet rack 23
- Chapter 3 24
- A1 and A2 25
- Short screws 25
- Mounting template 25
- Mount the System in the Rack 34
- Parts of the unit may be 35
- System and a Network 37
- Chapter 4 38
- SFP connector 41
- Latch release 41
- HSSDC2 connecto 41
- Power cord retainer clip 43
- Using the Xserve RAID System 45
- Power White On and OK 46
- Chapter 5 48
- Chapter 6 50
- Tab under handle 51
- RAID Overview 57
- How RAID Works 58
- Data Storage Methods 59
- RAID Levels 60
- Hardware and Software RAID 61
- Chapter 7 62
- Planning RAID Storage 63
- Chapter 8 64
- RAID 1 Schemes 67
- RAID 3 and 5 Schemes 67
- RAID 0+1 and RAID 10 Schemes 69
- RAID 0 and RAID 00 Schemes 73
- RAID 30 and 50 Schemes 77
- Glossary 81
- Specifications 83
- Specifications 85 85
- APPENDIX 87
- High-Risk Activities Warning 91
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