HP Smart Array 642 Controller

The Smart Array 642 Controller (SA-642) is a 64-bit, 133-MHz PCI-X, dual channel, SCSI array controller for entry-level hardware-based fault tolerance. Utilizing both SCSI channels of the SA-642 allows you to configure up to 6 internal and 14 external hard drives to store up to 2.9 TB of storage. The 64MB and 128MB BBWC (Battery Backed Write Cache) Enabler upgrade allows the SA-642 controller an option to add transportable BBWC for improved controller performance and increases the total controller memory, up to 192MB. The SA-642 also features complete data compatibility with previous generation's Smart Array controllers to ease data migration from server to server and for easy controller upgradeability.

Quickspecs Quickspecs US QuickSpecs » html » pdf

 

General PCI Bus 64-bit, 133 Mhz PCI Peak Data Transfer Rate 1066MB/s SCSI Protocol Support Ultra 320, Ultra3, Ultra2 SCSI Peak Data Transfer Rate 320MB/s per channel Channels 2 SCSI Ports (External/Internal) 1/1 Cache 64 MB of DDR-RAM used for code, transfer buffers, and read cache, upgradeable to 192MB of total memory with the 128MB BBWC Enabler RAID Support 0, 1, 0+1, 5 BBWC Enabler Optional Drives Supported (Max) 20 Drives Supported (maximum) is based on use of HP StorageWorks MSA 30 family (14 hard disk drive enclosure)