RZ26N and RZ28M Disk Drive

This document is a Product Note for Digital Equipment Corporation's RZ26N and RZ28M StorageWorks Disk Drive Building Blocks (SBBs). It provides replacement considerations, detailed disk specifications, and application notes for these SCSI-compatible drives.

Key points include:

• Compatibility: The drives are compatible with SCSI single-ended interfaces and supported on a wide range of operating systems and platforms, including Alpha Windows NT, DIGITAL UNIX, OpenVMS, Intel Windows (NT), Novell, HP9000 700/800 Series, IBM RS/6000, and Sun SPARC systems.

• Specifications:

  • Operate at 5400 RPM with a 10.4 ms average seek time.
  • Support Asynchronous and Synchronous data transfer protocols.
  • Feature programmable sector size reallocation, tagged command queuing, multi-initiator support, staggered disk spin-up, and self-diagnostics.
  • Come with a 5-year warranty and meet UL, CSA, and VDE standards.
  • Detailed tables provide physical data (dimensions, weight), environmental data (operating/non-operating temperature, humidity, shock, vibration), power requirements (seeking current, consumption), logical configuration (heads, capacity, cylinders, sectors, spin-up delay), and disk geometry.

• Staggered Spin Up: An automatic turn-on circuit staggers disk spin-up based on SCSI ID to prevent excessive power supply loading, especially in multi-drive arrays.

• Application Notes:
  • For Alpha Windows NT, DIGITAL UNIX, OpenVMS, and Intel MS-DOS/Windows/Netware users, no special operating system-specific instructions are required.
  • For Solaris users, specific /etc/format.dat entries and calculations are provided to ensure optimal configuration and avoid issues with filesystem size.
  • For HP-UX V10.x users, guidance is given on modifying disktab entries and using the newfs command with specific options to optimize filesystem size.
  • For IBM AIX RS/6000 users, detailed steps are provided for installing and configuring the drives using SMIT (System Management Interface Tool) or command-line utilities like cfgmgr, lsdev, mkvg, varyonvg, and extendvg.