IBM x3850 X6 Planning And Implementation Manual page 98

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 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
The ServeRAID M5120 SAS/SATA Controller supports connectivity to the IBM System
Storage external expansion enclosures listed in Table 3-15. 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 3-15 IBM System Storage external expansion enclosures
Part number
174712X
174724X
The external SAS cables listed in the following Table 3-16 support connectivity between
external expansion enclosures and the ServeRAID M5120 SAS/SATA Controller.
Table 3-16 External SAS cables for external storage expansion enclosures
Part number
39R6531
39R6529
For more information, see the IBM Redbooks Product Guide, ServeRAID M5120 SAS/SATA
Controller for IBM System x, available at this website:
http://www.redbooks.ibm.com/abstracts/tips0858.html?Open
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IBM System x3850 X6 and x3950 X6 Planning and Implementation Guide
Description
IBM System Storage EXP2512 Express
IBM System Storage EXP2524 Express
Description
IBM 3 m SAS Cable
IBM 1 m SAS Cable
Maximum quantity
supported per one
M5120
18
9
Maximum quantity
supported per one
enclosure
1
1