Lenovo System x3530 M4 Product Manual page 37

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

Up to 6 Gbps throughput per port

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

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 at:
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

For more information, see the Lenovo Press Product Guide ServeRAID M5225-2GB SAS/SATA
Controller at:
http://www.redbooks.ibm.com/abstracts/tips1258.html?Open
The controllers supports connectivity to the external expansion enclosures that are listed in the following
table. Up to nine expansion enclosures can be daisy-chained per one adapter port. For better
performance, distribute expansion enclosures evenly across both adapter ports.
Table 24. External expansion enclosures
Part number Description
610012X EXP2512 Storage Enclosure
610024X EXP2524 Storage Enclosure
System x3530 M4 (E5-2400 v2)
Maximum quantity supported per
one M5225
17
9
37