A Appendix A — SAS devices
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.
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Up to 4 internal or external SAS hard disk drives
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External connections require optional internal-to-external cable
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SAS drives require SAS to SATA data and power converter
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LSI MyStorage Utility for Windows
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RAID 0 – Striped disk array
◦
Two drives minimum
◦
Improved I/O performance
◦
No fault tolerance
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RAID 1 — Mirrored disk array
◦
Improved read performance
◦
100% redundancy
◦
Can recover from single drive failure
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Two drives
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RAID 1E
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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
SAS RAID 0 (IS) configuration
Follow the steps below to configure an Integrated Striped (IS) volume with the BIOS-based configuration
utility. The configuration procedure assumes that the system already has the required disk and disk
controllers.
1. On the Main menu screen of the BIOS-based configuration utility, use the arrow keys to select an
adapter.
2. Press Enter to go to the Adapter Properties screen.
3. On the Adapter Properties screen, use the arrow keys to select RAID Properties on the screen.
4. Press Enter to go to the RAID Properties screen.
ENWW Supported SAS RAID configurations 135
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