Product guide

NeXtScale nx360 M4 42
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 31. RAID controller and features for external locally attached storage
Part number Feature code Description
RAID controller
00AE938 A5ND ServeRAID M5225-2GB SAS/SATA Controller for System x
81Y4478 A1WX ServeRAID M5120 SAS/SATA Controller for System x
Hardware upgrades for M5120
81Y4487 A1J4 ServeRAID M5100 Series 512MB Flash/RAID 5 Upgrade for System x
81Y4559 A1WY ServeRAID M5100 Series 1GB Flash/RAID 5 Upgrade for System x
Features on Demand Upgrades for M5120*
81Y4546* A1X3 ServeRAID M5100 Series RAID 6 Upgrade for System x
90Y4273* A2MC ServeRAID M5100 Series SSD Performance Key for System x
90Y4318* A2MD ServeRAID M5100 Series SSD Caching Enabler for System x
* Use of any of the FoD upgrades for the M5120 requires one of the hardware upgrades - 81Y4487 or 81Y4559
The ServeRAID M5120 SAS/SATA Controller has the following specifications:
Eight external 6 Gbps SAS/SATA ports

Up to 6 Gbps throughput per port

Two external x4 mini-SAS connectors (SFF-8088)

Supports RAID 0, 1, and 10

Supports RAID 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)

PCIe 3.0 x8 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 Lenovo Press Product Guide ServeRAID M5120 SAS/SATA Controller for
System x, TIPS0858:
http://www.redbooks.ibm.com/abstracts/tips0858.html?Open
The ServeRAID M5225 SAS/SATA Controller has the following specifications:
Eight external 12 Gbps SAS/SATA ports

Supports 12, 6, and 3 Gbps SAS and 6 and 3 Gbps SATA data transfer rates

Two external x4 mini-SAS HD connectors (SFF-8644)

Supports 2 GB flash-backed cache (standard)

Supports RAID levels 0, 1, 5, 10, and 50 (standard)

Supports RAID 6 and 60 with the optional M5200 Series RAID 6 Upgrade

Supports optional M5200 Series Performance Accelerator and SSD Caching upgrades

PCIe x8 Gen 3 host interface

Based on the LSI SAS3108 12 Gbps ROC controller

Supports connectivity to the EXP2512 and EXP2524 storage expansion enclosures
