Voltage regulator modules (AY, AZ)

Each processor must have a dedicated voltage regulator module (VRM) that adjusts the voltage supplied to the processor. The VRM for the boot processor (CPU 1) is integrated into the system board.

Memory (AS, AT, AU, AV)

The system comes standard with 64 MB of error checking and correcting (ECC) RAM. System RAM is expandable up to 2 GB using 100 MHz ECC PC100-compliant 100 MHz 72-bit synchronous DRAM (SDRAM) DIMMs (4 DIMM sockets). System memory is PC 100 compliant.

The RAID backplane

The RAID backplane allows you to easily configure a reliable RAID subsystem. The RAID bay supports six 1-inch or 1.6-inch high 3.5-inch drives. For optimum operation, only approved, RAID-ready drives should be used with the RAID backplane.

Drives are mounted on a rail system, which provides quick and easy installation and hot-swapping capability. A fully functional RAID subsystem is controlled by a RAID Caching Controller.

Hot-swapping is a useful feature that allows you to replace a failed hard disk drive without interrupting system operation. In the event of a hot-swappable drive failure, in which the drive is part of a RAID 5 array, the system continues normal operation. The failed drive can be replaced and its contents rebuilt automatically on an equivalent replacement drive without interrupting the operation of the system.

To configure the backplane, refer to the RAID Cage Configuration Guide.

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