SWSD3-SC

This document provides product notes for the SWSD3-SC 1.05-GB Disk Drive SBB, manufactured by Digital Equipment Corporation and preformatted for Sun™ systems.

Key Features and Performance:

• Capacity: 1.05 GB formatted capacity (3.5-inch drive).
• Performance: Average seek time of 9.5 ms, average latency of 5.6 ms, and an average data-access time of 15.1 ms.
• Cache: Features a 512 KB segmented cache buffer with a firmware algorithm to pre-fetch data for sequential reads.
• Data Integrity: Incorporates 264-bit ECC (corrects up to 11 non-contiguous bytes), multiple sector header copies, embedded servo data, and end-to-end checksum error detection (EDC).
• Interface: Fast SCSI-2 interface.
• Reliability: 500,000-hour MTBF, self-diagnostics, automatic sector reallocation, tagged command queuing, zero-latency read, and compliance with UL, CSA, VDE standards.
• Transfer Rates: Synchronous interface transfer rate of 10 MB/s, asynchronous 5 MB/s, and media transfer rate of 2.7-5.5 MB/s.

Setup and Specifications:

• The drive comes pre-labeled with format utility settings for traditional partitions on both SunOS and Solaris systems, with specific /etc/format.dat information provided.
• Detailed specifications include physical configuration (4 platters, 8 heads, 3117 cylinders), recording methods (e.g., 3,256 tpi track density), physical dimensions (25.4mm height, 0.49 Kg weight), environmental operating conditions (+5°C to +55°C, 10-90% humidity), power requirements (e.g., 10W active), and acoustic levels (36 dBA seeking, 32 dBA idle).
• Status Indicators: Two front-panel LEDs indicate status: a green activity LED (on/flashing for drive activity) and an amber fault LED (on/flashing for error conditions).