What can I do to bring this disk online?
259735-0090-ATTWAAS1#sh disk detail
RAID Physical disk information:
disk00: Online BJ505FJC 286102 MB
disk02: Online BJ505F86 286102 MB
disk04: Ready JHWZKP3C 286102 MB
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From show disk tech-support>
Device #2
Device is a Hard drive
State : Ready
Supported : Yes
Transfer Speed : SAS 3.0 Gb/s
Reported Channel,Device : 0,4
Vendor : IBM-ESXS
Model : VPBA300C3ETS11 N
Firmware : A496
Serial number : JHWZKP3C
World-wide name : 5000CCA00D6FF40B
Size : 286102 MB
Write Cache : Disabled (write-through)
FRU : 43X0817
PFA : No Device #2
Device is a Hard drive
State : Ready
Supported : Yes
Transfer Speed : SAS 3.0 Gb/s
Reported Channel,Device : 0,4
Vendor : IBM-ESXS
Model : VPBA300C3ETS11 N
Firmware : A496
Serial number : JHWZKP3C
World-wide name : 5000CCA00D6FF40B
Size : 286102 MB
Write Cache : Disabled (write-through)
FRU : 43X0817
PFA : No