Promise Ultratrak SX4000

Promise Ultratrak SX4000 ... allow IT professionals to build huge capacities with up to eight (SX8000 / RM8000) or four (SX4000) Ultra ATA drives for maximum versatility and economy. A scalable design helps increase performance, capacity, and data redundancy.

UltraTrak SX (tower) and RM (rackmount) subsystems offer the best of what ATA RAID has to offer and then some. A powerful i960RM RISC processor, hardware-based XOR engine, and cache memory handle all I/O and RAID functions. An advanced scalability feature allows users to add extra drives at any time to increase capacity without taking the unit offline. RAID levels can also be converted or expanded on-the-fly without losing fault tolerance.