18 IBM System Storage N series Hardware Guide
2.4 N3220 model details
This section describes the N series 3220 models.
2.4.1 N3220 model 2857-A12
N3220 Model A12 is a single-node storage controller. It is designed to provide HTTP, iSCSI,
NFS, CIFS, and FCP support through optional features. Model A12 is a 2U storage controller
that must be mounted in a standard 19-inch rack. Model A12 can be upgraded to a Model
A22. However, this is a disruptive upgrade.
2.4.2 N3220 model 2857-A22
N3320 Model A22 is designed to provide identical functions as the single-node Model A12.
However, it has a second Processor Control Module and the CFO licensed function. Model
A22 consists of two Processor Control Modules that are designed to provide failover and
failback function, which helps improve overall availability. Model A22 is a 2U rack-mountable
storage controller.
2.4.3 N3220 hardware
The N3220 hardware has the following characteristics:
Based on the EXN3500 expansion shelf
24 2.5” SFF SAS disk drives (minimum initial order of 12 disk drives)
Specifications (single node, 2x for dual node):
– 2U, standard 19-inch rack mount enclosure (single or dual node)
– One 1.73 GHz Intel dual-core processor
– 6 GB random access ECC memory (NVRAM 768 MB)
– Four integrated Gigabit Ethernet RJ45 ports
– Two SAS ports
– One serial console port and one integrated RLM port
– One optional expansion I/O adapter slot on mezzanine card:
• 8 Gb FC card provides two FC ports
• 10 GbE card provides two 10 GbE ports
– Redundant hot-swappable, auto-ranging power supplies and cooling fans
Figure 2-5 shows the front view of the N3220.
Figure 2-5 N3220 front view
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