SWSD5-SA

This document provides product notes for the SWSD5-SA 3.57-GB 5.25-Inch Disk Drive SBB (StorageWorks Building Block) from Digital Equipment Corporation, designed for Sun products. It is preformatted and prelabled, ready for immediate use.

Key Features and Specifications:

• Capacity & Performance: A 3.57 GB (formatted) 5.25-inch drive with an average seek time of less than 12 ms, average latency of 5.6 ms, and an average data-access time of less than 17.6 ms. It achieves media transfer rates up to 5.5 MB/s.
• Technology: Utilizes a banded recording technique for consistent bit density and includes a 512-KB segmented cache buffer for sequential reads.
• Data Integrity: Boasts high data integrity with a 264-bit ECC (correcting up to 11 non-contiguous bytes per block), four redundant header copies per sector, embedded servo data for precise head positioning, and end-to-end checksum (EDC).
• Other Features: Features a Fast SCSI-2 interface, downloadable SCSI firmware, automatic sector reallocation, parity on cache RAM, a 300,000-hour MTBF, self-diagnostics, and tagged command queuing. It complies with UL, CSA, and VDE standards.
• Pre-configuration: Provides /etc/format.dat information with pre-determined partition settings for quick installation on SunOS and Solaris systems, recommending users enter this data for future use.
• Operating System Note: A critical warning states that the operating system may limit the ability to create file systems greater than 2.0 gigabytes in size.
• Physical & Environmental: Detailed tables are included, outlining physical configuration (e.g., 13 platters, 25 heads, 3,055 cylinders), recording specifications (e.g., 2,756 tpi track density, RLL (1,7) recording method), power requirements, performance metrics (e.g., 10 MB/s synchronous transfer), and environmental tolerances (operating temperatures 10°C to 50°C, shock resistance 10 G peak).
• Status Indicators: Two LEDs (green for activity, amber for fault) on the front display the drive's operational status.