Lenovo 3550 M4 7914C3G User Manual
Product codes
7914C3G
IBM System x3550 M4
42
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.
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 22. RAID controllers and options for external disk storage expansion
Part number
Feature
code
code
Description
Maximum
supported
supported
Standard models
where used
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
Upgrade
1
-
81Y4487
A1J4
ServeRAID M5100 Series 512MB Flash/RAID 5
Upgrade
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
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 512 MB or 1 GB cache upgrades.
** The ServeRAID M5120 SAS/SATA Controller requires the x3550 M4 Thermal Solution Kit, 00Y7117 or the second
processor (with additional system fans).
Cache/RAID 5 Upgrade (81Y4484).
† The ServeRAID M5100 Series RAID 6 Upgrade (81Y4546) requires 512 MB or 1 GB cache upgrades.
** 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 or 1 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
For more information, see the IBM Redbooks® Product Guide
ServeRAID M5120 SAS/SATA Controller
for IBM System x at: