Infortrend DS1012R2C000D-SFP - Configuration Rules

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Configuration Rules
Following are the rules for connecting SAS interfaces across storage and expansion
enclosures:
 Fault-tolerant links in a dual-controller combinations: Corresponding to SAS
drives’ dual-ported interface, two physical links are available from each disk
drive, routed across the backplane board, each through a SAS expander,
and then interfaced through a 4x wide external SAS port.
 With data paths through separate SAS domains, access to disk drives can
be continued in the event of a cable link or SAS expansion controller failure.
Designation
Description
Designation
Description
1
Storage controller A
5
Dual-ported SAS drives
2
Storage controller B
6
Expander
3
Expansion enclosure
controller A
7
To another expansion
enclosure
4
Expansion enclosure
controller B
 Fault-tolerant Links to SAS disk Drives
 SAS expansion cables will be available with the expansion enclosures. Note