Promise Technology 66 Pro - Manual (Page 107)

SuperTrak66™ User's Manual Chapter 5
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Turning On Read Cache
Depending on the application or server operation in which the SuperTrak66 is used,
admin/users may elect to turn on the read cache feature of the SuperTrak66
controller for performance purposes or disable caching entirely. Presence or
absence of read cache may have a dramatic effect. Consult Chapter 6 RAID
Management for more details.
1) To turn on read cache from SuperCheck, double-click the Array icon in Tree
View.
2) In the Information View, left-click the arrow next to the Read Cache selection
box and choose "On" (see p. 98).
Turning Off Caching
1) To turn off all caching from SuperCheck, double-click the Array icon in Tree
View.
2) In the Information View, left-click the arrow next to the Read Cache selection
box and choose "Cache Off". This will disable all caching functions from
SuperTrak66 (see p. 98).
Turning On/Off Write Back Cache
Write-back cache affects system perf ormance depending on server and application
type. However, write-back cache data will be lost in the event of a system power
outage or other event where the data has not yet been saved to disk. Turning off
write-back caching will force SuperTrak66 to immediately save all writes to the drive.
1) To turn on/off write back caching from SuperCheck, double-click the Array icon
in Tree View.
2) In the Information View, make sure Read Cache is turned "On".
3) Left-click the arrow next to the Write Cache selection box and choose "Write
Back". This will enable "write" and "write back" caching functions from
SuperTrak66 (see p. 98).