Configuration Rules - Infortrend EonStor DS 1000 Gen2 Series Hardware Manual

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
1
2
3
4

Fault-tolerant Links to SAS disk Drives

SAS expansion cables will be available with the expansion enclosures. Note
Description Designation
Storage controller A
Storage controller B
Expansion enclosure
controller A
Expansion enclosure
controller B
86
Description
5 Dual-ported SAS drives
6 Expander
7 To another expansion
enclosure