Check manual page of fjdarye_disks_summary

Fujitsu Storage Systems: Summarized Status of all Disks
Distribution None
License GPLv2
Supported Agents SNMP
This check monitors the reported summary status of all installed physical disks in storage systems from Fujitsu. Supported devices: ETERNUS DX60 ETERNUS DX80 ETERNUS DX80 S2 ETERNUS DX500 S3 ETERNUS DX600

The check goes CRIT if the current state is not equal the state during discovery; otherwise OK. Moreover you can configure using the device states. In this case the expected state is ignored and the check status will be CRIT if one disk is broken, WARN if one is not available, not supported, readying, recovering, partbroken, spare, notexist or copying, OK otherise.