HP A3550A User Manual - A3661-90001 - Page 62
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Table 1-1 Caching Recommendations for Disk Configurations Disk configuration Read caching Write caching RAID-5 RAID-3 RAID-1 Recommended Not allowed Recommended Highly recommended Not allowed Acceptable RAID-1/0 Recommended Acceptable Table 1-2 Utilities for Various Cache Operations Cache operation Grid Manager Specify basic cache parameters Yes Enable/disable storage system Yes cache Enable/disable read and/or write Yes cache for individual LUNs SAM No No Yes STM Yes Yes Yes Auto-Trespass 1-20 Disk Array High Availability Features
1-20
Disk Array High Availability Features
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Table 1-1
Caching Recommendations for Disk Configurations
Disk configuration
Read caching
Write caching
RAID-5
Recommended
Highly recommended
RAID-3
Not allowed
Not allowed
RAID-1
Recommended
Acceptable
RAID-1/0
Recommended
Acceptable
Table 1-2
Utilities for Various Cache Operations
Cache operation
Grid Manager
SAM
STM
Specify basic cache parameters
Yes
No
Yes
Enable/disable storage system
cache
Yes
No
Yes
Enable/disable read and/or write
cache for individual LUNs
Yes
Yes
Yes