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.

Chapter 1 Overview

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