Avago Technologies 3ware SAS 9750-16i4e - Manual (Page 89)

Unit Object Commands
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/c x /u x set autoverify=on|off
The /cx/ux set autoverify command allows you to turn on and turn off the
autoverify operation on a specified unit /cx/ux.
By default, autoverify is on. When autoverify is on and the basic verify
schedule is used (verify=basic), a verify automatically runs at the basic verify
time (Friday at midnight, by default). If the system is not on at that time,
verification starts the next time the system is powered up. When the
autoverify is on and the advanced verify schedule is used (verify=advanced),
autoverify runs during the times specified with the advanced schedule. You
can use the show verify command to show the existing schedule windows.
For more information about using basic or advanced verify, see “/cx set
verify=advanced|basic|1..5” on page 66.
For more about setting up verify schedules, see “Setting Up a Verify
Schedule” on page 60.
/cx/ux set wrcache=on|off [quiet]
The /cx/ux set wrcache command allows you to turn on or off the write cache
for a specified unit /cx/ux. This command is supported on all controllers.
By default, write cache is on.
Write cache includes the disk drive cache and controller cache.
When write cache is on, data is stored in both the 3ware controller cache and
the drive cache before the data is committed to disk. This allows the system to
process multiple write commands at the same time, thus improving
performance. However, when data is stored in cache, it can be lost if a power
failure occurs. With a BBU installed, the data stored on the 3ware controller
can be restored.
The quiet attribute turns off interactive mode, so that no confirmation is
requested to proceed.
Table 8: Autoverify Behavior (when enabled)
Command Setting Action
Basic Verify Schedule
(verify=basic)
Follows Basic Verify Schedule
Advanced Verify Schedule
(verify=advanced)
Follows Advanced Verify Schedule