Compaq ProLiant Clusters HA/F100, Руководство администратора

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Designing the Compaq ProLiant Clusters HA/F100 and HA/F200 2-31
Compaq Confidential – Need to Know Required
Writer: Bryan Hicks Project: Compaq ProLiant Clusters HA/F100 and HA/F200 Administrator Guide Comments:
Part Number: 380362-003 File Name: c-ch2 Designing the Compaq ProLiant Clusters HAF100 and HAF200.doc Last Saved On: 8/24/00 12:00 PM
Shared Storage Capacity
Each server is connected to shared storage (the Compaq StorageWorks RAID
Array 4000/4100 storage system), which mainly stores data files of clustered
applications and services. Follow the guidelines below to determine how much
capacity is needed for your shared storage.
NOTE: For some clustered applications, it may make sense to store the application
program files on shared storage. If the application allows customization and the
customized information is stored in program files, the program files should be placed on
shared storage. When a failover event occurs, the secondary node will launch the
application from shared storage. The application will execute with the same
customizations that existed when executed on the primary node.
Two factors help to determine the required amount of shared storage disk
space:
■
The amount of space required for all clustered applications and their
dependencies.
■
The level of data protection (RAID) required for each type of data used
by each clustered application. Two factors driving RAID requirements
are:
The performance required for each drive volume
The recovery time required for each drive volume
IMPORTANT: Windows software RAID is not available for shared drives when using
MSCS. Hardware RAID is the only available RAID option for shared storage.
For more information about hardware RAID, see the following:
■
Compaq StorageWorks Fibre Channel RAID Array 4000 User Guide
■
Compaq StorageWorks Fibre Channel RAID Array 4100 User Guide