![Adaptec RAID 2120S Software Reference Manual Manual pdf 147 page image](https://manuals-archive2.s3.amazonaws.com/2509362/8f6403978da338e7621eb483ede2667d147f.jpg)
5-99container CommandsTable 5-5 summarizes the values for the /write_cache_enableand /unprotected switches:ExamplesBefore setting cache parameters for a specific array, use thecontainer list command to obtain information about anyexisting arrays.As the following example shows, there is an array 0 (a volume set)on this controller with no file system on it (as evidenced by Nonedisplayed in the Usage column):AAC0>container listExecuting: container listNum Total Oth Stripe Scsi PartitionDr Label Type Size Ctr Size Usage C:ID:L Offset:Size-- ----- ------ ------ --- ------ ------- ------ -------------0 Volume 15.0MB None 0:02:0 64.0KB: 15.0MBTable 5-5. Switch Values and Results/write_cache_enableSwitch Setting/unprotectedSwitch Setting ResultFALSE FALSE The NVRAM write-back cachesetting for the specified array isdisabled.FALSE TRUE Not allowed. An appropriate errormessage displays.TRUE FALSE The NVRAM write-back cachesetting for the specified array isenabled when protected. Thismeans the controller enables thearray’s NVRAM write-backcache only if a battery is presentand its status is OK.TRUE TRUE The NVRAM write-back cachesetting for the specified array isenabled always. This means thecontroller forces the enabling ofthe array’s NVRAM write-backcache even if write data could belost due to no battery or a badbattery.