The IBM p5 550 server is an up to 4-way UNIX or Linux system designed to meet the rigors of the on demand world. It delivers outstanding price and performance, mainframe-inspired availability features, flexible capacity upgrades and innovative IBM Virtualization Engine systems technologies. Powered by IBM's most advanced 64-bit processor, POWER5 with simultaneous multithreading1 the p5-550 supports critical enterprise applications while helping improve affordability and responsiveness. The p5-550 also offers flexible Capacity on Demand (CoD) features to help reduce IT costs by allowing companies to pay for processor resources they use when they use them. The p5 550 can serve as a versatile departmental or regional server for enterprise applications running on either AIX 5L, UNIX, or Linux operating environments.

Features

• Deskside or 4U 19" rack-mount packaging
• One, two or four 64-bit 1.50GHz POWER5 processors
• L2 cache: 1.9MB (1-, 2-way); 3.8MB (4-way) 
• L3 cache: 36MB (2-way); 72MB (4-way)
• 512MB to 64GB of 266MHz DDR1 memory
• Five PCI-X adapter slots (four long, one short), 64-bit/133MHz 
• Four standard and four optional hot-swappable SCSI disk bays for up to 2.4TB of internal storage
• Maximum I/O drawers add an additional 56 PCI-X slots and 96 disk bays (28.8TB)
• Dual channel Ultra320 SCSI controller (internal only; RAID optional)
• Two 10/100/1000 Ethernet ports
• Optional 2 Gigabit Fibre Channel, 10 Gigabit Ethernet and 4x InfiniBand adapters
• Two USB, two HMC, two system ports
• Two slimline and one standard media bays