System information

Using the RAID GUI
2-12
2.3.2 SAS JBOD Installation with RAID subsystem
• For single controller with single JBODs:
Use the down and up stream ports to connect
the RAID subsystem with up to three SAS
JBODs. Figure 2-14 shows a serial construction
for expanded JBOD disks. Connect the RAID
subsystem’s SAS port to the up stream port of a
SAS JBOD using a Mini SAS cable. For more
expanded JBOD chassis, connect the down
stream port on the previously connected SAS
JBOD to the up stream port on the other SAS
JBOD.
• For redundant controller with redundant JBODs
To ensure the system can continue its
operation without any interruption in the event
of any SAS JBOD failure, a loop construction is
suggested. Figure 2-15 shows an example of
the loop implementation with a redundant RAID
system and SAS JBODs. Users can create as
below:
The connection shown in Figure 2-15 enables
all the three JBOD chassis to be looped
through the redundant-controller system. In
this way, the data is transmitted from node to
node around the loop. Once the JBOD2 is
failed and causes interruption, JBOD1 and
JBOD3 still work normally via the redundant
path.
Figure 2-14 Single SAS JBOD connection
Figure 2-15 Redundant SAS JBOD loop connection