Hp NetRAID 1Si Controller Bedienungsanleitung PDF herunterladen (Seite 65)

Chapter 3 HP NetRAID Config

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.

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Hp NetRAID 1Si Controller Bedienungsanleitung Seite 65