System information

Using the RAID GUI
2-11
2.3 SAS JBOD Enclosure Display (for SAS expansion controller
only)
The single controller RAID subsystem provides a SAS expansion port which allows users to connect a SAS JBOD.The
single controller support 64 hard disks.
Each redundant / upgradable system provides two SAS expansion ports to connect with one or more SAS JBOD chassis.
Depending on the redundant-controller system and SAS JBOD chassis models (16-bay or 24-bay) as well as the memory
size in use (1G or 2G), the GUI may have different enclosure tabs and front tray view displayed. See Table 2-7 below for
the supported number of SAS JBOD chassis and hard disks.
* Please note that there are some empty slots shown in the SAS JBOD enclosure display (in the last enclosure tab) due
to the maximum number of supported drives.
2.3.1 Rear side monitor of the SAS JBOD chassis
On the rear side of the SAS JBOD chassis, there are three ports (for single SAS JBOD) or six ports (for redundant SAS
JBOD) available for SAS JBOB expansion. See the port identifiers as shown in Figure 2-13.
RAID Subsystem model Memory size Units of HDD
SAS JBOD
(16-bay)
SAS JBOD
(24-bay)
16-bay
1G 64 3 2
2G or higher 120 7* 5*
24-bay
1G 64 3* 2*
2G or higher 120 6 4
Table 2-7 Supported number of redundant SAS JBOD chassis and hard disks
Single SAS JBOD chassis:
Redundant SAS JBOD chassis:
Figure 2-13 Rear side of the SAS JBOD chassis (GUI)
Down stream port: Down 1
Up stream ports (from left to right): Up1/ Up2
Down stream port: Down 1
Up stream ports (from left to right): Up1/ Up2