16 IBM System Storage N series Hardware Guide
2.3 N3150 model details
This section describes the N series 3150 models.
2.3.1 N3150 model 2857-A15
N3150 Model A15 is a single-node storage controller. It is designed to provide CIFS, NFS,
Internet Small Computer System Interface (iSCSI), and HTTP support. Model A15 is a 2U
storage controller that must be mounted in a standard 19-inch rack. Model A15 can be
upgraded to a Model A25. However, this is a disruptive upgrade.
2.3.2 N3150 model 2857-A25
N3150 Model A25 is designed to provide identical functions as the single-node Model A15.
However, it has a second Processor Control Module and the Clustered Failover (CFO)
licensed function. Model A25 consists of two Processor Control Modules that are designed to
provide failover and failback function, which helps improve overall availability. Model A25 is a
2U rack-mountable storage controller.
2.3.3 N3150 hardware
The N3150 hardware has the following characteristics:
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
Redundant hot-swappable, auto-ranging power supplies and cooling fans
Maximum Capacity is 240 TB:
– Internal Storage: 6- and 12-disk orderable configurations
– External Storage: Maximum of two EXN3000 SAS/SATA or EXN3500 SAS storage
expansion units (48 disks).
Note: Be aware of the following points regarding N3150 models:
N3150 models do not support the Fibre Channel protocol.
Compared to N32xx systems, the N3150 models have newer firmware and no
mezzanine card option is available.
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