EonStor / EonStor DS S12/S16/S24 Series
130
Configu
BOD
enclosures:
Fault-tolerant links in a dual-controller combinatio
to SAS
ch disk
ander,
With data paths through separate SAS domains, access to disk drives can
ration Rules
Following are the rules for connecting SAS interfaces across RAID and J
ns: Corresponding
ical links are available from ea
ard, each through a SAS exp
xternal SAS port.
drives’
dual-ported
interface, two phys
drive, routed across the backplane bo
and then interfaced through a 4x wide e
be continued in the event of a cable link or SAS JBOD controller failure.
Designation
Description
Designation
Description
1
RAID controller A
5
Dual-ported SAS drives
2
RAID controller B
6
Expander
3
JBOD controller A
7
To another JBOD
4
JBOD controller B
Fault-tolerant Links to SAS disk Drives
many
a longer SAS external cable (e.g., a 120cm cable)
may be necessary for connecting a JBOD from the opposite direction
SAS expansion cables will be available with the JBODs. Note that if
JBODs are connected,
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