HP NetRAID 1Si Controller - Manual (Page 65)

Chapter 3 HP NetRAID Config
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Logical Drive Settings
Auto Configuration uses the following defaults to configure your drives:
Table 3-1. HP NetRAID Config Automatic Settings for Logical Drives
Parameter Setting
Stripe size 64 KB
Write Policy Write-Back in HP NetRAID-3Si and integrated
HP NetRAID in HP NetServer LH 3000/3000r,
LH 6000/6000r, and LT 6000r (See note below
table.)
Write-Through in HP NetRAID-1Si and integrated
HP NetRAID in HP NetServer LH 3/3r and LH 4/4r
Read Policy Adaptive
Cache Policy Cached I/O
Spanning NoSpan
NOTE Write-Back means that data is written to disk only when it is
forced out of the cache. Write-Back is efficient because an
entry may be written many times in the cache without a disk
access. While this setting increases performance, data can be
lost if power fails.
Write-Back is NOT recommended unless one of the following
is true:
•
The HP NetRAID adapter is an HP NetRAID-3Si, which
has a Battery Backup Unit.
•
Your system is equipped with a UPS (uninterruptible
power supply).
•
Your system is an HP NetServer LH 3000/3000r,
LH 6000/6000r, or LT 6000r that is equipped with a
charged accessory Battery Backup Module.
Write-Back is not certified for any logical drive used as a
Novell NetWare volume.