DEC-StorageWorksDiskDrives

This document describes Digital's StorageWorks SCSI Disk Drives, highlighting their versatility, data integrity, and modularity for various enterprise storage needs.

Key points include:

1. Diverse Application Support: The drives are designed to meet different application requirements.

   • Multiuser applications (e.g., transaction processing) benefit from high I/O rates, best achieved with multiple small-to-medium capacity 3.5-inch drives.
   • Single-user applications (e.g., modeling, imaging) require high bandwidth for large sequential files, served by drives with superior transfer rates and cost-per-megabyte efficiency, including 5.25-inch options.

2. Robust Data Integrity & Reliability: Digital's SCSI-2 drives incorporate features for superior data integrity:

   • 264-bit error correction code (corrects up to 15 bytes per block).
   • Quadruplicate headers for data identification and transfer.
   • Comprehensive power-up self-diagnostics for early failure warning.
   • Atomic write to complete writes during power failure or bus reset.
   • Extended operating temperature range (10°-50°C) for higher reliability.
   • Extensive testing across Digital systems and peripherals ensures full compatibility.

3. Modular & Flexible Configurations:

   • Available as 3.5-inch and 5.25-inch SCSI building blocks, fitting into various StorageWorks enclosures and DEC AXP systems.
   • Configurations support up to seven 3.5-inch drives for high I/O, or a mix of 5.25-inch and 3.5-inch drives for high single-drive capacity.
   • Modularity enables customer installation, quick-swap for maintenance, and rapid reconfiguration, reducing service costs and protecting investments.

4. Performance & Specifications: The drives offer industry-standard SCSI-2 interfaces with a maximum bus bandwidth of 10.0 MB/s, and capacities ranging up to 3500 MB (3.5 GB).