EonStor DS S12/S16/S24 Series Hardware Manual
WARNING
All SAS cables are sensitive and must be handled with care. To prevent interference
within a rack system, the cable routing path must be carefully planned and the cables
must not be bent.
3.6.1
Expansion Links
The SAS expansion port connects to expansion JBOD enclosures, such as
Infortrend’s S12S-J1000G, S12S-J1002R, S12S-J2000R/G, S16S-J1000R/S and
S16S-J2000-R/S. For dual-controller systems, each expansion port connects a RAID
controller to a corresponding JBOD controller making fault-tolerant links to different
SAS domains.
There are two principles with the combinations of RAID and JBOD:
Dual-controller RAID connects to dual-controller JBODs; Single-controller RAID
connects to single-controller JBODs.
An alternate IFT-9270CMSASCAB6, SFF-8088 to SFF-8088 170cm cable is
available for making expansion links with a dual-controller configuration. A longer
cable is required if connections to JBODs are made from two opposite directions.
Routing through two different connections can avoid loss of data links if one
enclosure fails in between.
For JBODs S12S-J1002R, S12S-J2000R/S and S16S-J2000R/S
RAID Models
JBOD
Configuration
S12-Rxxxx
S12S-J1002-R
S12S-J2000-R
Dual-controller; fault-tolerant paths
S12-Gxxxx
S12S-J2000-S
Single-controller; single path
S16x-Rxxxx S16S-J2000-R
Dual-controller; fault-tolerant paths
S16x-Gxxxx
S16S-J2000-S
Single-controller; single path
S24x-Rxxx S16S-J2000-R
Dual-controller; fault-tolerant paths
S24x-Gxxx
S16S-J2000-S
Single-controller; single path
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