Lenovo System x3250 M5 Product Manual page 36

Important: The ServeRAID M5120 SAS/SATA Controller ships standard without a cache. One of the
available cache upgrades (81Y4484, 81Y4487, or 81Y4559) is required for the M5120 adapter operations,
and it must be purchased together with the 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 levels 0, 1, and 10

Support for RAID levels 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 512 MB battery-backed cache or 512 MB or 1 GB flash-backed cache

Up to 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, about the ServeRAID M5120, see the Lenovo Press Product Guide at
http://lenovopress.com/tips0858
The ServeRAID M5225-2GB SAS/SATA Controller has the following specifications:
Eight external 12 Gbps SAS/SATA ports

Two external x4 mini-SAS HD connectors (SFF-8643)

Supports RAID levels 0, 1, 10, 5, 50 standard

2 GB flash-backed cache standard

PCIe x8 3.0 host interface

Based on the LSI SAS3108 12 Gbps ROC controller

For more information about the ServeRAID M5225, see the Lenovo Press Product Guide at
http://lenovopress.com/tips1258
System x3250 M5 36