EonStor DS S48 Series Hardware Manual
3.4.1
Expansion Links
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.
Corresponding RAID & JBOD Models
RAID Models
JBOD
Configuration
S48FS-G2842-6
S48S-J2000G
Single-controller; single path
S48FS-R2842-6 S48S-J2000R Dual-controller; fault-tolerant paths
Configuring enclosure IDs:
The configurable IDs for JBODs are from 1 to 15. Usually the numbering
starts from the one closest to the managing RAID enclosure.
The S48 RAID systems described in this manual can
ONLY
connect to
S48S JBOD(s), a maximum of four.
When S48 JBODs are configured with SxxF-G/R2850 systems, a
mixed-configuration of JBODs is possible.
RAID
systems
JBOD
systems
S12F-G/R2850
2U JBOD
systems (IDs)
3U JBOD
systems (IDs)
4U JBOD
systems (IDs)
Total number of
hard drives
5
(ID: 1~5)
3
(ID: 6, 9, 12)
2
(ID: 6, 8)
216
240
200
5
(ID: 1~5)
5
(ID: 1~5)
3
(ID: 6, 9, 12)
S16F-G/R2850
S24F-G/R2850
240
4
(ID: 1~4 )
S48 Series
Make sure a unique ID is configured on each JBOD so that the SAS
WWN addresses of disk drives can be properly assigned. RAID system
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