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External disk storage expansion
The server supports attachment to external storage expansion enclosures, such as the EXP2500 series, by
using either the ServeRAID M5120 (6 Gbps) or M5225 (12 Gbps) SAS/SATA Controller.
Table 22. 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**
-
00AE938
A5ND
ServeRAID M5225-2GB SAS/SATA Controller
1
-
Hardware upgrades for the M5120 (per controller)
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
-
47C8670
A4G6
ServeRAID M5100 Series 2GB Flash/RAID 5 Upgrade
1
-
Feature on Demand upgrades for the M5120 (per server)
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†
-
Feature on Demand upgrades for the M5225 (per server)
47C8706
A3Z5
ServeRAID M5200 Series RAID 6 Upgrade
1
-
47C8710
A3Z7
ServeRAID M5200 Series Performance Accelerator
1
-
47C8712
A3Z8
ServeRAID M5200 Series SSD Caching Enabler
1
-
* The ServeRAID M5100 Series Battery Kit (81Y4508) is only supported with ServeRAID M5100 Series 512MB
Cache/RAID 5 Upgrade (81Y4484).
† This FoD upgrade requires a cache memory upgrade.
** The ServeRAID M5120 SAS/SATA Controller requires the x3550 M4 Thermal Solution Kit, 00Y7117 or the second
processor (with additional system fans).
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, 1 GB, or 2 GB flash-backed cache
Up to 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
System x3550 M4 (E5-2600 v2) (withdrawn product)
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