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IBM System x3950 X6
37
External disk storage expansion
The server supports attachment to external storage expansion enclosures, such as the EXP2500 series,
by using the ServeRAID M5120 SAS/SATA Controller. The server can also be attached to supported
external storage systems, such as the IBM System Storage® DS3500 series, by using a supported HBA
(see the earlier "Storage HBA" section). The following table shows the RAID controllers and options for
external disk storage expansion.
Table 22. RAID controllers and options for external disk storage expansion
Part
number
Feature
code
Description
Maximum
supported
x3950 X6
Standard models
where used
00AE938
A5ND
ServeRAID M5225-2GB SAS/SATA Controller
-
81Y4478
A1WX
ServeRAID M5120 SAS/SATA Controller
5
-
Features on Demand upgrades for the M5225
47C8706
A3Z5
ServeRAID M5200 Series RAID 6 Upgrade for IBM
Systems-FoD
1
47C8710
A3Z7
ServeRAID M5200 Series Performance Accelerator for
IBM Systems-FoD
1
47C8712
A3Z8
ServeRAID M5200 Series SSD Caching Enabler for
IBM Systems-FoD
1
Hardware upgrades for the M5120
81Y4487
A1J4
ServeRAID M5100 Series 512MB Flash/RAID 5
Upgrade
1
-
81Y4559
A1WY
ServeRAID M5100 Series 1GB Flash/RAID 5 Upgrade 1
-
Feature on Demand upgrades for the M5120
90Y4318
A2MD
ServeRAID M5100 Series SSD Caching Enabler
1*
-
90Y4273
A2MC
ServeRAID M5100 Series SSD Performance Key
1*
-
81Y4546
A1X3
ServeRAID M5100 Series RAID 6 Upgrade
1*
-
* These M5120 features upgrades require a cache memory upgrade (81Y4487 or 81Y4559).
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