Compaq ProLiant 8500 Compaq Parallel Database Cluster Model PDC/O2000 for Orac - Page 127

Disk Drive Planning, Nonshared Disk Drives

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Cluster Planning 4-19 Using the Compaq Array Configuration Utility, group the RA4000/RA4100 Array disk drives into RAID disk arrays at specific RAID levels. This example shows four disk drives grouped into one RAID disk array at RAID level 5. It also shows two RAID level 1 disk arrays containing two disk drives each. A logical drive is what you see labeled as Disk 1, Disk 2, and so on, from the Disk Management utility. For information about RAID disk arrays and logical drives, refer to the information on drive arrays in the Compaq StorageWorks RAID Array 4000 User Guide or the Compaq StorageWorks RAID Array 4100 User Guide. Use Disk Management to define one extended partition per RAID logical drive. Also using Disk Management, divide the extended partitions into logical partitions, each having its own drive letter. (Windows 2000 Advanced Server logical partitions are called "logical drives" in the Oracle documentation.) IMPORTANT: To performing partitioning, all required drivers must already be installed for each server. For information about drivers, refer to the Compaq Parallel Database Cluster Model PDC/O2000 Certification Matrix for Windows 2000. Disk Drive Planning Nonshared Disk Drives Nonshared disk drives, or local storage, operate the same way in a cluster as they do in a single-server environment. These drives can be in the server drive bays or in an external storage enclosure. As long as they are not accessible by multiple servers, they are considered nonshared. Treat nonshared drives in a clustered environment as you would in a non-clustered environment. In most cases, some form of RAID is used to protect the drives and aid in restoration of a failed drive. Since the Oracle Parallel Server application files are stored on these drives, it is recommended that you use hardware RAID. Hardware RAID is the recommended solution for RAID configuration because of its superior performance. For the PDC/O2000, hardware RAID for nonshared drives can be implemented with a Compaq SMART-2 controller or by using dedicated RA4000/RA4100 Arrays for nonshared storage.

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Cluster Planning
4-19
Using the Compaq Array Configuration Utility, group the RA4000/RA4100
Array disk drives into RAID disk arrays at specific RAID levels. This example
shows four disk drives grouped into one RAID disk array at RAID level 5. It
also shows two RAID level 1 disk arrays containing two disk drives each.
A logical drive is what you see labeled as Disk 1, Disk 2, and so on, from the
Disk Management utility. For information about RAID disk arrays and logical
drives, refer to the information on drive arrays in the
Compaq StorageWorks
RAID Array 4000 User Guide
or the C
ompaq StorageWorks RAID Array 4100
User Guide
.
Use Disk Management to define one extended partition per RAID logical
drive. Also using Disk Management, divide the extended partitions into logical
partitions, each having its own drive letter. (Windows 2000 Advanced Server
logical partitions are called
“
logical drives
”
in the Oracle documentation.)
IMPORTANT:
To performing partitioning, all required drivers must already be installed for
each server. For information about drivers, refer to the
Compaq Parallel Database Cluster
Model PDC/O2000 Certification Matrix for Windows 2000
.
Disk Drive Planning
Nonshared Disk Drives
Nonshared disk drives, or local storage, operate the same way in a cluster as
they do in a single-server environment. These drives can be in the server drive
bays or in an external storage enclosure. As long as they are not accessible by
multiple servers, they are considered nonshared.
Treat nonshared drives in a clustered environment as you would in a
non-clustered environment. In most cases, some form of RAID is used to
protect the drives and aid in restoration of a failed drive. Since the Oracle
Parallel Server application files are stored on these drives, it is recommended
that you use hardware RAID.
Hardware RAID is the recommended solution for RAID configuration because
of its superior performance. For the PDC/O2000, hardware RAID for
nonshared drives can be implemented with a Compaq SMART-2 controller or
by using dedicated RA4000/RA4100 Arrays for nonshared storage.