Promise Technology TX8 Write Cache What you can do, Write Back Write Thru What you can do

UltraTrak100 TX4 and UltraTrak100 TX8 User Manual

Configure Cache

Write Cache

Write Back

Write Thru

CONFIGURE CACHE

See below

The Configure Cache menu will allow the setting of cache parameters. The following parameter is set in the Configure Cache menu:

Write Cache

What you can do:
Press SEL:		Selects one of the following active functions:
Write Cache		Moves the display to the Write Cache menu.
Press	:	Moves the active message line up. (Active is marked by *.)
Press	:	Moves the active message line down. (Active is marked by *.)
Press EXIT:		Returns to the Configuration menu.

WRITE CACHE

Setting the Write Cache to Write Back improves performance, because a write to the high-speed cache is faster than to disk. Data normally written to disk is first written into the UltraTrak100’s cache, allowing the system CPU to continue with other tasks while the UltraTrak100 handles writing data from it’s cache to the array. However, write-back cache data is lost with a system power outage or other event where the data has not yet been saved to disk. Setting the Write Cache to Write Thru forces UltraTrak100 to immediately save all writes to the drive.

Write Back

Write Thru

What you can do:

Press SEL:		Selects one of the following active functions:
Write Back		Select function and return to Configure Cache menu.
Write Thru		Select function and return to Configure Cache menu.
Press	:	Moves the active message line up. (Active is marked by *.)
Press	:	Moves the active message line down. (Active is marked by *.)
Press EXIT:		Returns to the Configuration menu.

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