Infortrend Expansion Guide
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Expansion Enclosure Connections
The sections in this chapter discuss the connections between expansions and storage systems with SAS 6 Gb/s and SAS 12
Gb/s technologies. Since the SAS drive-side protocol technology has been upgraded from SAS 6 Gb/s to SAS 12 Gb/s, the
operating storage system can use different SAS protocol for expansion.
SAS 12 Gb/s Storage System
For Infortrend storage systems with SAS 12 Gb/s drive-side, the onboard SAS expansion ports are marked as
IN
.
Figure 4: SAS 12 Gb/s Storage System Onboard Expansion Port
For any type of expansion enclosure, connect a SAS cable (
blue
) from the primary controller's SAS expansion port of the
storage system to the primary controller's
OUT
SAS port of the first expansion enclosure.
To configure the redundant paths in two daisy-chain topology, connect a SAS cable (
orange
) from the second controller's SAS
expansion port of the storage system to the second controller's SAS
OUT
port of the last expansion enclosure. Basic
connection rule when connecting systems in this connection type is
IN to OUT
, from the last expansion enclosure to the first
expansion enclosure.
Figure 6: Connecting dual-controller expansions
using host board’s SAS 12Gb/s expansion ports.
Figure 5: Connecting single-controller expansions
using the onboard SAS 12 Gb/s expansion ports .
