Avago Technologies SAS 8344ELP User Manual

Cable Length Information for the

®

MegaRAID

SAS 8344ELP RAID

Controller

Addendum

The external cables from the MegaRAID SAS 8344ELP RAID controller
to the storage enclosure may not be longer than two meters. This
limitation applies to the MegaRAID SAS 8344ELP RAID controller only.

The cable length limit is caused by the placement of the I/O controller
engine on the SAS 8344ELP. There are approximately nine inches of
PCB trace (electrical lines on the controller) between the I/O engine and
the external connector. This is equivalent to nine feet, or 2.7 meters, of
external cabling. Figure 1 shows the cable connection to the controller.

In addition, using a x4 or x1 fan-out cable to connect from the x4 external
connector on the RAID controller to a SATA drive is not supported. This
type of connection is supported on the internal port. However, SATA
drives in an expander-based enclosure are supported with the same
limitations as SAS drives (two meters).

®

Figure 1 Cable Connection for the MegaRAID SAS 8344ELP

RAID Controller

26095-00 December 2006 1 of 2

Rel. 1.0 Copyright © 2006 LSI Logic Corporation. All rights reserved.

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CD
Part No. 26095-00

LSI Logic, the LSI Logic logo design, and MegaRAID are
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2 of 2 Cable Length Information for the MegaRAID® SAS 8344ELP RAID Controller

December 2006 - Rel. 1.0 Copyright © 2006 LSI Logic Corporation. All rights reserved.