16 IBM System Storage N series Hardware GuideFigure 2-3 shows the N3220 Single-Controller in chassisFigure 2-3 N3220 Single-Controller in chassis2.3 N3240This section addresses the N series 3240 models.2.3.1 N3240 model 2857-A14N3240 Model A14 is designed to provide a single-node storage controller with HTTP, iSCSI,NFS, CIFS, and FCP support through optional features. The N3240 Model A14 is a 4Ustorage controller that must be mounted in a standard 19-inch rack. Model A14 can beupgraded to a Model A24. However, this is a disruptive upgrade.2.3.2 N3240 model 2857-A24N3240 Model A24 is designed to provide identical functions as the single-node Model A14.However, it includes a second PCM and CFO licensed function. Model A24 consists of twoPCMs that are designed to provide failover and failback function, helping improve overallavailability. Model A24 is a 4U rack-mountable storage controller.2.3.3 N3240 hardware Based on the EXN3000 expansion shelf 24 SATA disk drives– Minimum initial order of 12 disk drives Specifications (single node, 2x for dual node)– 4U, 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– 10 GbE or 8 Gb FC card provides two ports– Redundant hot-swappable, auto-ranging power supplies and cooling fans
