As a 4 channel ATA133 RAID adapter, the RocketRAID 454 supports up to 8 IDE hard disk drives, and provides multi level RAID support including RAID 0, 1, 5, 10, JBOD. The RocketRAID 454 is a high quality, cost-effective solution for your mass storage needs.The RocketRAID 454 can support multiple RAID arrays, and the 4 independent ATA133 channels provide parallel disk/array access. Due to the RocketRAID 454s RAID 5, 10 and 0 capabilities, data storage and retrieval is dramatically faster than single drive systems. For RAID 1 and 10, the RocketRAID 454 provides disk mirroring, hot-spare options for automatic array-rebuilds, hot-swap support for swapping failed disks on the fly (works with Hot-Swap capable mobile racks such as Rocket Mate), and disk failure notification (audible alarms, visual warning messages).These features provide a high level of security and data protection against hard disk failure.