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SAS JBOD expansion has some constraints as described in the followings:
1 User could create RAID group among multiple chassis, max number of disks in a
single RAID group is 32.
2 Global spare disk can support all RAID groups which located in the different chassis.
3 When support SATA drives for the redundant JBOD model, the bridge board is
required. The multiplexer board does not apply to this model.
4 The following table is the maximum JBOD numbers and maximum HDD numbers
with different chassises can be cascaded.
Dual controllers +Dual JBOD
RAID Storage System
DSN-6120
DSN-6020 no. 4
Max HDD no. 60
5.7.2 Upgrade firmware of JBOD
To upgrade the firmware of JBOD, please follow the procedures.
1. Please login IP SAN storage as username admin first, and then go “/ System
maintenance / Upgrade”.
Figure 5.7.2.1
2. Choose a JBOD which wants to upgrade.
3. Please prepare new firmware file in local hard drive, then click “Browse” to select
the file. Click “Confirm”.
4. After finished upgrading, the JBOD system must reboot manually to make the new
firmware took effect.