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Chapter 1 Overview
1
1 Overview
The ADAC Ultra2 S466 PCI RAID controller is a high
performance intelligent PCI-to-SCSI host adapter with
RAID control capabilities. The ADAC Ultra2 S466
provides reliability, high performance, and fault-tolerant
disk subsystem management. The ADAC Ultra2 S466 is an
entry level-to mid-range RAID controller solution. ADAC
Ultra2 S466 offers a cost-effective way to implement
RAID in a server. The ADAC Ultra2 S466 has an Ultra
and Wide SCSI channel supporting data transfer rates up to
80 Megabytes per second (MB/s) per channel. The SCSI
channel supports up to fifteen non-Ultra SCSI devices.
ADAC Ultra2 S466 Features ADAC Ultra2 S466 features:
• provides a high performance I/O migration path while
preserving existing PCI-SCSI software,
• Performs SCSI data transfers up to 80 MB/s,
• performs synchronous operation on a wide LVD SCSI bus,
• allows up to 15 LVD SCSI devices on the wide bus,
• includes an Intel® i960RP that performs RAID calculations
and routing and
• supports 4, 8, 16, 32, 64, or 128 MB of Fast Page Mode or
EDO DRAM cache memory in a SIMM socket used for read
and write-back caching and RAID 5 parity generation.
SCSI Channel The ADAC Ultra2 S466 upgrade card includes one Fast-20
SCSI channel. The channel is powered by a Symbios Logic
53C895 (Fast-40) SCSI processor.
NVRAM and Flash ROM A 32 KB x 8 NVRAM stores RAID system
configuration information. The ADAC Ultra2 S466
firmware is stored in flash ROM for easy upgrade.
SCSI Connectors ADAC Ultra2 S466 has one ultra high density 68-pin
external connector for external storage subsystem and one
high density 68-pin internal connector.