BIOS BR256, User Manual, Page: 28 / 110

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Cache size Setup
CACHE SIZE
128MB
To setup the cache size of BR256
Please do not alter the cache size if you did not change the cache memory
Parameter Function Memo
CACHE SIZE
64MB
128MB
「
Cache Buffer Error
」
will be shown if the selected cache
size not matched the installed cache memory
Default
128MB
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Write Cache Mode Setup
WRITE ALL
PENDING 0.1Sec
The controller needs more time than writing to single drive to generate parity while doing RAID-3/5/6
WRITE. Therefore Write Cache is enabled in such situation.
This parameter defines the timing to wait before starting to move cache contents into disks.
Parameter Function Memo
WRITE MODE
WAITING
Under this setting, the Write operation will not be acknowledged
as “Completed” till data is written into disks. This means no
caching is used during data write. The performance is slower
compared to
「
WRITE MODE PENDING
」
mode. READ speed is
not affected.
WRITE MODE
BUFFERD
Write command is acknowledged as “Completed” right after data
written into cache, and cached data starts to be moved into disks
at the same time.
WRITE MODE
PENDING
0.1Sec
After finishing a host command, this mode will wait 0.1 seconds
and start to write data before the next command. When doing
sequential writes, cache will be filled by multiple write command
and data can be written once to save total write time.
WRITE MODE
PENDING
1 Sec
Similar to PENDING 0.1 sec, the wait interval is one second.
WRITE ALL
PENDING
0.1Sec
1 Sec
This mode is set as default to enable Write cache even one drive
is failed.
Default