Table 25. Specifications comparison
Feature N2125 N2225 N2226
ServeRAID
M5120 ServeRAID M5225
Adapter type SAS HBA SAS HBA SAS HBA RAID adapter RAID adapter
Part number 46C9010 00AE912 00AE916 81Y4478 00AE938
Form factor Low profile Low profile Low profile Low profile Low profile
Controller chip LSI SAS2308 LSI SAS3008 LSI SAS3008 LSI SAS2208 LSI SAS3108
Host interface PCIe 3.0 x8 PCIe 3.0 x8 PCIe 3.0 x8 PCIe 3.0 x8 PCIe 3.0 x8
Port interface 6 Gbps SAS 12 Gbps SAS 12 Gbps SAS 6 Gbps SAS 12 Gbps SAS
Number of
external ports
8 8 16 8 8
External port
connectors
2x Mini-SAS
(SFF-8088)
2x Mini-SAS HD
(SFF-8644)
4x Mini-SAS HD
(SFF-8644)
2x Mini-SAS
(SFF-8088)
2x Mini-SAS HD (SFF-
8644)
Drive interface SAS, SATA SAS, SATA SAS, SATA SAS, SATA SAS, SATA
Drive type HDD, SSD HDD, SSD HDD, SSD HDD, SED, SSD HDD, SED, SSD
Maximum
number of
devices
1024 1024 1024 240 240
RAID levels None None None 0/1/10; Optional
5/50 and 6/60
0/1/10/5/50; Optional
6/60 (47C8706)
JBOD mode Yes Yes Yes No No
Cache None None None Optional; 512MB,
1GB or 2GB
2 GB (included)
CacheVault
cache protection
None None None Flash (with cache
upgrades)
Flash (included)
FastPath None None None Optional
(90Y4273)
Optional (47C8710)
CacheCade Pro
2.0
None None 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
N2225 & N2226: http://lenovopress.com/tips1175
ServeRAID M5120: http://lenovopress.com/tips0858
ServeRAID M5225: http://lenovopress.com/tips1258
PCIe Flash Storage adapters
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