Configuration Rules - Infortrend S12 Series Hardware Manual

Configu ration Rules
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Following are the rules for connecting SAS interfaces across RAID and J
enclosures:

Fault-tolerant links in a dual-controller combinatio
drives' dual-ported interface, two phys
drive, routed across the backplane bo
and then interfaced through a 4x wide e

With data paths through separate SAS domains, access to disk drives can
be continued in the event of a cable link or SAS JBOD controller failure.
Designation
1
2
3
4

Fault-tolerant Links to SAS disk Drives

SAS expansion cables will be available with the JBODs. Note that if
JBODs are connected,
may be necessary for connecting a JBOD from the opposite direction
EonStor / EonStor DS S12/S16/S24 Series
Description
RAID controller A
RAID controller B
JBOD controller A
JBOD controller B
a longer SAS external cable (e.g., a 120cm cable)
109
ns: Corresponding
ical links are available from ea
ard, each through a SAS exp
xternal SAS port.
Designation
Dual-ported SAS drives
5
Expander
6
To another JBOD
7
BOD
to SAS
ch disk
ander,
Description
many