Supported Raid Levels - Compaq 112726-001 - ProLiant - 6500 Administrator's Manual

4-16 Compaq Parallel Database Cluster Model PDC/O5000 for Oracle8i and Windows 2000 Administrator Guide

Supported RAID Levels

The PDC/O5000 implements RAID at the hardware level, which is faster than
software RAID. When you implement RAID on shared storage arrays, you use
the hardware RAID to perform such functions as making copies of the data or
calculating checksums. To implement the RAID sets, use the Compaq
StorageWorks Command Console (SWCC) or the Command Line Interface
(CLI) window for the HSG80 Array Controllers.
NOTE: Do not use the software RAID offered by the operating system to configure your
shared storage disks.
RAID provides several fault-tolerant options to protect your cluster's shared
data. However, each RAID level offers a different mix of performance,
reliability, and cost.
The MA8000/EMA12000 Storage Subsystem and HSG80 Array Controllers
used with the PDC/O5000 supports these RAID levels:
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RAID 1
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RAID 0+1
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RAID 3/5
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RAID 5
For RAID level definitions and information about configuring hardware
RAID, refer to the following:
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Refer to the information about RAID configuration contained in the
StorageWorks documentation provided with the HSG80 Array
Controller.
I
Refer to the Compaq white paper Configuring Compaq RAID
Technology for Database Servers, #ECG 011/0598, available at the
Compaq website at
www.compaq.com
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Refer to the various white papers on Oracle8i, which are available at the
Compaq ActiveAnswers™ website at
www.compaq.com/activeanswers/