AcceleRAID 250 adapters bring the performance and fault tolerance of RAID to entry level and mid-range server applications at the lowest cost possible.
AcceleRAID 250 adapters are designed to also sup-port PCI-based motherboards with embedded SCSI chips and systems that have a PCI expansion slot designated for add-in RAID controllers. The AcceleRAID 250 adapters upgrade Symbios SCSI chips mounted on the system board to advanced RAID SCSI channels through use of interrupts routed to the designated PCI slot. Intel's N440BX, T440BX, NA440BX, NC440BX, and SC450NX are examples of such motherboards and systems.

Affordable RAID Solution
The AcceleRAID 250 employs the same architecture as the world record-breaking performance leader, Mylex’s DAC960PJ, but the hardware is optimised to be a single-channel RAID controller with Ultra2 SCSI support. Alternatively, it can use the SCSI channels on the motherboard for a multiple channel solution. This means the AcceleRAID has lower component count and lower cost, yet delivers the same superior performance and fault tolerance expected from Mylex RAID controllers.

Reliable, Dependable, with Unparalleled Performance
The AcceleRAID’s performance is enabled by Intel’s i960RD 66MHz processor and the new Mylex 86238 RAID controller chip, as well as a monolithic NT driver that increases overall system throughput. AcceleRAID 250 also provides full RAID level 0, 1, 0+1, 3, 5, 10, 30, 50 and JBOD configuration capa-bilities. ECC cache, supporting 4MB to 64MB SIMM cache memory, provides error detection and correction for maximum data protection. AcceleRAID 250 RAID adapters have a multitude of fault detection and fault tolerance features, as well as new functions to ease set-up, flexibility and manage-ment. The new Immediate RAID Availability (back-ground initialisation) feature enables other set-up tasks to be performed while the rest of the system is being configured. RAID expansion allows users to add drives to existing arrays and re-stripe data across all the drives. The additional storage space created by the new drive expands the capacity of the existing logical drive or creates an additional logical drive. RAID migration allows for easy reconfiguration from one RAID level to another. The copy-drive group feature provides users with a method of transferring the contents of one logical drive to another in a single step.

Flexibility
The AcceleRAID 250 has one Ultra2 SCSI LVD channel on the adapter. This channel is fully independent and complements the SCSI channels on the motherboard. The AcceleRAID 250 RAID adapter can also utilize the Symbios SCSI chips on the motherboard.