Infortrend S12 Series - Configuration Rules for SAS Interfaces

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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