Hard Drive shows alarm on JSA.

JSA does not recognize the hard drive, RAID fails to rebuild the hard drive.

JSA 1500 [juniper.net], 3500, 5500, and 3800:

To verify the RAID status:
# sas2ircu 0 status

If the above "Volume state" is degraded, the physical drive status can be checked with the following:
# sas2ircu 0 display

Obtain the Volume ID from the status output and then you can run then run a consistency check with the following:
# sas2ircu 0 constchk <volume ID>

**Note - Users should run a consistency check on their JSA appliances at least once a month to make sure grown drive defects are mapped out in case of a drive failure.

JSA 5800 [juniper.net], 7500 and 7800:

To check the RAID status:
# /opt/MegaRAID/MegaCli/MegaCli64 -LDinfo -Lall -a 0

To check the drive status:
# /opt/MegaRAID/MegaCli/MegaCli64  -PDlist -a 0

To start a consistency check:
# /opt/MegaRAID/MegaCli/MegaCli64 -LDCC -Start -Lall -a 0

2019-10-24: Added JSA7800 [juniper.net] model
2024-5-22: Updated 3800 consistency check command as it was missing the controller #.