IBM Redboks System x3550 M4 User Manual

IBM System x3550 M4 32
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 server can also be attached to supported
external storage systems, such as the IBM System Storage® DS3500 series, using the supported HBAs.
Table 20. RAID controllers and options for external disk storage expansion
Part number Feature
code
Description Maximum
supported
Standard models
where used
81Y4478 A1WX ServeRAID M5120 SAS/SATA Controller 2 -
Hardware upgrades for the M5120
81Y4508 A22E ServeRAID M5100 Series Battery Kit 1* -
81Y4484 A1J3 ServeRAID M5100 Series 512MB Cache/RAID 5
Upgrade
1 -
81Y4487 A1J4 ServeRAID M5100 Series 512MB Flash/RAID 5
Upgrade
1 -
81Y4559 A1WY ServeRAID M5100 Series 1GB Flash/RAID 5 Upgrade 1 -
Feature on Demand upgrades for the M5120
81Y4544 A1X2 ServeRAID M5100 Series Zero Cache/RAID 5
Upgrade
1 -
90Y4318 A2MD ServeRAID M5100 Series SSD Caching Enabler 1
90Y4273 A2MC ServeRAID M5100 Series SSD Performance Key 1
81Y4546 A1X3 ServeRAID M5100 Series RAID 6 Upgrade 1† -
* The ServeRAID M5100 Series Battery Kit (81Y4508) is only supported with ServeRAID M5100 Series 512MB
Cache/RAID 5 Upgrade (81Y4484).
† The ServeRAID M5100 Series RAID 6 Upgrade (81Y4546) requires RAID 5 upgrades with cache (81Y4484,
81Y4487, or 81Y4559 only).
The ServeRAID M5120 SAS/SATA Controller has the following specifications:
Eight external 6 Gbps SAS/SATA portscool

Two external x4 mini-SAS connectors (SFF-8088)

Supports RAID levels 0, 1, and 10

Supports RAID levels 5 and 50 with optional M5100 Series RAID 5 upgrades

Supports RAID 6 and 60 with the optional M5100 Series RAID 6 Upgrade

Supports 512 MB battery-backed cache or 512 MB or 1 GB flash-backed cache (cache)

6 Gbps throughput per port

PCIe x8 Gen 3 host interface

Based on the LSI SAS2208 6 Gbps ROC controller

Supports 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 at:
http://www.redbooks.ibm.com/abstracts/tips0858.html?Open

IBM Redboks System x3550 M4 Specifications

General

Brand	IBM
Model	Redboks System x3550 M4
Category	Server
Language	English