Product guide

System x3100 M5 28
The ServeRAID M5120 SAS/SATA Controller has the following specifications:
Eight external 6 Gbps SAS/SATA ports
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Two external x4 mini-SAS connectors (SFF-8088)
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Supports RAID levels 0, 1, and 10

Supports RAID levels 5 and 50 with optional M5100 Series RAID 5 upgrades
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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

6 Gbps throughput per port

PCIe x8 Gen 3 host interface
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Based on the LSI SAS2208 6 Gbps ROC controller
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Supports connectivity to the EXP2512 and EXP2524 storage expansion enclosures
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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 M5120 SAS/SATA Controller 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
M5120 external port. For better performance, distribute expansion enclosures evenly across both M5120
ports.
Table 22. External expansion enclosures
Part number Description Maximum quantity supported per
one adapter
610012X EXP2512 Storage Enclosure 17
610024X EXP2524 Storage Enclosure 9
The external SAS cables that are listed in the following table support connectivity between external
expansion enclosures and the ServeRAID M5120 SAS/SATA Controller.
Table 23. External SAS cables for external storage expansion enclosures
Part number Feature code Description Quantity supported
per one enclosure
Cables for use with M5120 controller
39R6531 3707 3 m SAS Cable 1
39R6529 3708 1 m SAS Cable 1
Cables for use with M5225 controller
00Y2459 0.6m SAS Cable (mSAS HD to mSAS) 1
00Y2461 1.5m SAS Cable (mSAS HD to mSAS) 1
00Y2463 3m SAS Cable (mSAS HD to mSAS) 1
90Y7682 6m SAS Cable (mSAS HD to mSAS) 1