IBM System x3300 M4 Product Guide

IBM System x3300 M4 38
External disk storage expansion
The server supports attachment to external storage expansion enclosures, such as the EXP2500 series,
by using the ServeRAID M5120 SAS/SATA Controller.
The ServeRAID M5120 SAS/SATA Controller has the following specifications:
Eight external 6 Gbps SAS/SATA ports

Two external x4 mini-SAS connectors (SFF-8088)

Support for RAID 0, 1, and 10

Support for RAID 5 and 50 with optional M5100 Series RAID 5 upgrades

Support for RAID 6 and 60 with the optional M5100 Series RAID 6 Upgrade

Support for a 512 MB battery-backed cache or 512 MB or 1 GB flash-backed cache (cache)

6 Gbps throughput per port

PCIe 3.0 x8 host interface

Based on the LSI SAS2208 6 Gbps ROC controller

Support for connectivity to the EXP2512 and EXP2524 storage expansion enclosures

For more information, see the IBM Redbooks Product Guide ServeRAID M5120 SAS/SATA Controller for
IBM System x :
http://www.redbooks.ibm.com/abstracts/tips0858.html?Open
The ServeRAID M5120 SAS/SATA Controller supports connectivity to the IBM System Storage
®
external
expansion enclosures that are listed in the following table. Up to nine expansion enclosures can be
daisy-chained per one M5120 external port. For better performance, distribute expansion enclosures
evenly across both M5120 ports.
Table 27. IBM System Storage external expansion enclosures
Part number Description Maximum quantity
supported per one M5120
172701X* IBM System Storage EXP3000 18
174712X IBM System Storage EXP2512 Express 18
174724X IBM System Storage EXP2524 Express 9
* Withdrawn from marketing
The external SAS cables that are listed in the following table support connectivity between external
expansion enclosures and the ServeRAID M5120 SAS/SATA Controller.
Table 28. External SAS cables for external storage expansion enclosures
Part number Description Maximum quantity
supported per one enclosure
39R6531 IBM 3 m SAS Cable 1
39R6529 IBM 1 m SAS Cable 1

IBM System x3300 M4 Specifications

General

Brand	IBM
Model	System x3300 M4
Category	Server
Language	English