HP Xw8400 HP xw8400 Service and Technical Reference Guide - Page 144

Supported SAS RAID configurations - recover raid 1

Page 144 highlights

Supported SAS RAID configurations The following RAID configurations are supported on the HP xw8400 Workstation. NOTE This section does not apply to configuring RAID in the Linux environment. For RAID in the Linux environment, configure SW RAID configurations as provided by Red Hat Enterprise Linux. ● Up to 4 internal or external SAS hard disk drives ● External connections require optional internal-to-external cable ● SAS drives require SAS to SATA data and power converter ● LSI MyStorage Utility for Windows ● RAID 0 - Striped disk array ● Two drives minimum ● Improved I/O performance ● No fault tolerance ● RAID 1 - Mirrored disk array ● Improved read performance ● 100% redundancy ● Can recover from single drive failure ● Two drives ● RAID 1E ● Three drives minimum ● Can be an odd number of drives ● Can always recover from a single drive failure, and in some cases, recover from two drive failures 134 Appendix A Appendix A - SAS devices ENWW

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Supported SAS RAID configurations
The following RAID configurations are supported on the HP xw8400 Workstation.
NOTE
This section does not apply to configuring RAID in the Linux environment. For RAID in
the Linux environment, configure SW RAID configurations as provided by Red Hat Enterprise
Linux.
Up to 4 internal or external SAS hard disk drives
External connections require optional internal-to-external cable
SAS drives require SAS to SATA data and power converter
LSI MyStorage Utility for Windows
RAID 0 – Striped disk array
Two drives minimum
Improved I/O performance
No fault tolerance
RAID 1 — Mirrored disk array
Improved read performance
100% redundancy
Can recover from single drive failure
Two drives
RAID 1E
Three drives minimum
Can be an odd number of drives
Can always recover from a single drive failure, and in some cases, recover from two drive
failures
134
Appendix A
Appendix A — SAS devices
ENWW