
Table 19. External storage adapter specifications
Feature
N2125
ServeRAID M5120
ServeRAID M5225-2GB
Adapter type
SAS HBA
RAID adapter
RAID adapter
Part number
46C9010
81Y4478
00AE938
Form factor
Low profile
Low profile
Low profile
Controller chip
LSI SAS2308
LSI SAS2208
LSI SAS3108
Host interface
PCIe 3.0 x8
PCIe 3.0 x8
PCIe 3.0 x8
Port interface
6 Gbps SAS
6 Gbps SAS
12 Gbps SAS
External ports
8
8
8
External port connectors
2x Mini-SAS
(SFF-8088)
2x Mini-SAS
(SFF-8088)
2x Mini-SAS HD
(SFF-8644)
Drive interface
SAS, SATA
SAS, SATA
SAS, SATA
Drive type
HDD, SSD
HDD, SED, SSD
HDD, SED, SSD
Maximum number of devices
1024
240
240
RAID levels
None
0/1/10;
Optional 5/50 & 6/60
0/1/10/5/50;
Optional 6/60
JBOD mode
Yes
No
No
Cache
None
Optional 512MB, 1GB or
2GB with flash backup
2 GB (included)
CacheVault cache protection
None
Flash (with cache upgrades)
Flash (included)
FastPath
None
Optional (90Y4273)
Optional (47C8710)
CacheCade Pro 2.0
None
Optional (90Y4318)
Optional (47C8712)
Cache upgrade required: The ServeRAID M5120 SAS/SATA Controller ships standard without a cache.
One of the available cache upgrades (81Y4487, 81Y4559, or 47C8670) is required for the M5120 adapter
operations, and it must be purchased together with the controller.
For more information about the adapters, see these Lenovo Press Product Guides:
N2125:
http://lenovopress.com/tips1062
ServeRAID M5120:
http://lenovopress.com/tips0858
ServeRAID M5225:
http://lenovopress.com/tips1258
PCIe Flash Storage Adapters
Lenovo System x3750 M4 (8753)
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