
Operation when the Logical Drive is offline due to failure of Physical Device
If you continue to use the RAID System with lost redundancy of a Logical Drive and another Physical Device is failed further, the redundancy of the Logical Drive is lost completely
(two or more Physical Devices of RAID Level 1 or 5 is failed, three or more Physical Devices of RAID Level 6 is failed). The status of a Logical Drive without redundancy is offline
(with its [Status] being [Offline]). The data in a Logical Drive in the offline status is lost. Replace all failed Physical Devices and Rebuild the RAID System.
Figure 27 Display of RAID Viewer / raidcmd (Under lost redundancy of Logical Drive)
existence of
> raidcmd property -tg=ld -c=1 -l=1
RAID Controller #1 Logical Drive #1
ID : 0
Disk Array Information : 1 (order 1/1)
RAID Level : RAID 5
Capacity : 270GB
Sector Format : 512
Stripe Size : 256KB
Cache Mode (Setting) : Write Through
Cache Mode (Current) : Write Through
Type : Logical Drive
Status : Offline
Structure and Status of RAID System
> raidcmd property -tg=pd -c=1 -p= e252s3
RAID Controller #1 Physical Device e252s3
Enclosure : 252
Enclosure Position : Internal
Slot : 3
ID : 20
Device Type : HDD
Interface : SAS
Vendor/Model : SEAGATE ST936701SS
Firmware Version : 0003
Serial Number : 3LC05RDP
Sector Format : 512
Capacity : 67GB
Status : Failed
S.M.A.R.T. : Normal
RAID Level: 5
Devices
> raidcmd property -tg=pd -c=1 -p=e252s4
RAID Controller #1 Physical Device e252s4
Enclosure : 252
Enclosure Position : Internal
Slot : 4
ID : 21
Device Type : HDD
Interface : SAS
Vendor/Model : SEAGATE ST3300657SS
Firmware Version : N007
Serial Number : 3SJ043P5
Sector Format : 512
Capacity : 67GB
Status : Failed
S.M.A.R.T. : Normal
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