Galaxy 65 User Guide
178
Typically, if your drives are part of an array, you do not want to turn on write-back cache on the drives.
The Galaxy 65 Subsystem is already using write-back cache to improve performance. Turning on write-
back cache on the disk drive
may
improve performance in some cases, depending on the type of array
and how you are using it.
Any disk drives with write-back cache enabled should be connected to an Uninterruptible power supply
(UPS) in case of power failure. If the drives are not on a UPS and power is lost during disk writes, the
array will lose any data in the disk’s write-back cache.
Caution
We recommend that you disable disk write-back cache. Some drives delete their write-back cache if they
encounter an internal error, resulting in lost data.
To change the write-back cache setting:
1
From the System Menu, select
Configuration Menu
and press
Enter
.
The Configuration Menu displays.
Select
Disk Configuration
and press
Enter
.
The Disk Configuration screen displays.
2
Select
Write-back Cache
and press
Enter
.
The Write-back Cache screen displays. The current setting is marked with an * next to it.
Содержание The Galaxy 65
Страница 1: ...Galaxy 65 User Guide Part No 43061 02A Issue 2 0 January 13 2004...
Страница 9: ...Contents ix Index 229...
Страница 10: ...x Galaxy 65 User Guide...
Страница 19: ...Preface xvii...
Страница 20: ...Galaxy 65 User Guide xviii...
Страница 21: ...Introduction 1 Chapter 1 Introduction 1 1 The Galaxy 65 System Figure 1 1 The Galaxy 65 FC AL System...
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Страница 218: ...Galaxy 65 User Guide 198 2 Select LUN information and press Enter The LUN Information screen displays...
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