Avago Technologies 3ware SAS 9750-4i - Manual (Page 64)

Chapter 2. CLI Syntax Reference
56 3ware SATA+SAS RAID Controller Card CLI Guide, Version 10.0
/c x add type = disk = [stripe= size ]
[noscan] [group= <3|4|5|6|7|8|9|10|11|12/
13|14|15|16> ] [nocache|nowrcache] [nordcache|
rdcachebasic] [autoverify] [noqpolicy] [ignoreECC]
[name= string ]
[storsave=]
[rapidrecovery=all|rebuild|disable]
[v0=n|vol=a:b:c:d]
This command allows you to create a new unit on the specified controller. You
specify type, disks, and optional stripe size. By default the host operating
system will be informed of the new block device, write cache will be enabled,
Intelligent read cache will be enabled, a storsave policy of balance will be set,
a rapid raid recovery policy of All will be set, and the drive queuing policy is
enabled. In case of RAID 50, you can also specify the layout of the unit by
specifying the number of disks per disk group with the
group attribute.
/cx is the controller name, for example /c0, /c1, and so forth.
type=RaidType specifies the type of RAID unit to be created. Possible unit
types include raid0, raid1, raid5, raid6 (9650SE and higher only), raid10,
raid50, single, and spare.
Example: type=raid5
When a new unit is created, it is automatically assigned a unique serial
number. In addition, users can assign the unit a name.
Note: By default, write cache is enabled. However, if the controller does not have a
BBU installed, a message will warn you that you could lose data in the event of a
power failure.
Enabling write cache will improve write performance greatly, but you are at risk of
losing data if a power failure occurs when data is still in the cache. You may want to
obtain a BBU and UPS to safeguard against power loss.
Note: The unit’s serial number cannot be changed.