Avago Technologies 3ware SAS 9750-4i - Manual (Page 51)

Controller Object Commands
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cx show numdrives
This command reports the number of drives currently managed by the
specified controller /cx. This report does not include (logically) removed or
exported drives.
On 9500S and earlier controllers, physically-removed disk(s) will still be
counted. For a workaround, see “/cx/px show smart” on page 107.
Example:
//localhost> /c0 show numdrives
/c0 Number of Drives = 5
/cx show numports
This command reports how many physical connections are made to the
controller and the total number of physical ports possible for the controller.
Example for a 9650SE-16ML with no drives attached:
//localhost> /c0 show numports
/c0 Number of Ports = 16
Example for 9690SA-8E with 8 dual-port SAS drives:
//localhost> /c3 show numports
/c3 Connections = 16 of 128
/cx show numunits
This command reports the number of units currently managed by the specified
controller /cx. This report does not include off-line units (or removed units).
Example:
//localhost> /c0 show numunits
/c0 Number of Units = 1
/cx show ondegrade
This feature only applies to 9500S controllers.
This command reports the write cache policy for degraded units. If the
ondegrade policy is “Follow Unit Policy,” a unit write cache policy stays the
same when the unit becomes degraded. If the ondegrade policy is off, a unit
write cache policy will be forced to “off” when the unit becomes degraded.
Example:
//localhost> /c0 show ondegrade
/c0 Cache on Degraded Policy = Follow Unit Policy