Galaxy GHDX4 RAID iSCSI-SAS/SATA InstaHardware Reference Manual
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Dual-controller RAID to dual-controller JBOD.
Two (2) SFF-8088 to SFF-8088 cables are required.
Expansion Link Considerations:
1. A 120cm cable may be necessary as an expansion link if you
route the fault-tolerant cables from opposite directions. Routing
cables from opposite directions allows uninterrupted access to
the disk drives in other enclosures when one expansion
enclosure fails among them.
2. A 120cm is also necessary if you have bend radius concerns in
your rack cabinet. The bend radius for SAS cables is 2.2 inches
minimum.
3. The IN and OUT ports are specified on JBOD controllers’
faceplates.
JBOD Expansion Links with Dual-controller JBOD