Avago Technologies 3ware SAS 9750-16i4e - Manual (Page 81)

Unit Object Commands
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completion of the active process and (P) denotes that the percentage
completion of the paused process.
Example:
/localhost> /c0 show unitstatus
Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy
---------------------------------------------------------------------------
u0 RAID-6 REBUILD-VERIFY 50%(A) 70%(P) 256k 298.22 RiW OFF
In the preceding example, the RAID 6 unit (u0) is in the Rebuild-Verify state.
The rebuild is currently active at 50 percent complete, while the verify is
paused at 70 percent complete.
For the unit output:
//localhost> /c0/u0 show
Unit UnitType Status %RCmpl %V/I/M Port Stripe Size(GB)
------------------------------------------------------------------------
u0 RAID-6 REBUILD-VERIFY 50%(A) 70%(P) - 64K 2683.80
u0-0 DISK OK - - p0 - 298.20
u0-1 DISK OK - - p1 - 298.20
u0-2 DISK OK - - p2 - 298.20
u0-3 DISK REBUILDING 80% - p3 - 298.20
u0-4 DISK OK - - p4 - 298.20
u0-5 DISK OK - - p5 - 298.20
u0-6 DISK OK - - p6 - 298.20
u0-7 DISK OK - - p7 - 298.20
u0-8 DISK REBUILD-PAUSE 20% - p8 - 298.20
u0-9 DISK OK - - p9 - 298.20
u0-10 DISK OK - - p10 - 298.20
u0-11 DISK OK - - p11 - 298.20
In the preceding example, the RAID 6 unit (u0) has 2 parity drives. Currently,
it has two REBUILDING drives; one is in the active rebuilding state and
another is in the paused rebuild state. The unit is also in the paused VERIFY
state. Similar to the output of the /cx show unitstatus command, the top-level
unit status and percentage show the composite unit status and composite
rebuild percentage.