Last Revised
AST RESEARCH, INC. INFORMATIONAL BULLETIN # 0042 06/10/97
TITLE: 2.5GB Hard Drive 10 Minute Spindown
SUMMARY
This bulletin informs our customer base that a 10 minute minimum
spindown timer will be implemented on all future Western Digital
3.5" CAVIAR hard disk drives.
Western Digital part numbers affected are CAVIAR AC11200-00LA
(1.2GB), AC22500-00LA (2.5GB) and AC34000-00LA (4GB).
This issue affects the following systems: 503058, 503080, 503082,
503083, 503084, 503086, 503094, 503120, 503152, 503153, 503196,
and 503213.
NOTES
According to Western Digital, the spin down timer change will be
implemented to protect drives from frequent start/stop cycles
which cause unnecessary wear and tear. The drives still accept
timer values set at less than 10 minutes (sector count < 120);
however, drives will not spin down until 10 minutes have expired.
These drives will not spin down for periods less than 10 minutes,
regardless of BIOS setup settings. Spin down limitations can be
bypassed in Windows 95 (OSR2) by setting the Power Management
time-out period to less than 10 minutes.
Western Digital part numbers affected are CAVIAR AC11200-00LA
(1.2GB), AC22500-00LA (2.5GB) and AC34000-00LA (4GB).
The 23xxxx Part Number referenced in this IB are as follows:
230093-250 = spins down after 1 minute of no activity
230093-252 = spins down after 10 minutes of no activity
Part Number 501661-012 is a 2.5GB Fast IDE 3.5 Hard Drive Option
Kit.
For additional information, see Addendum (AST p/n 003832-001A)
included with the system.
AST recommends that the customer set the spin down setting for
hard drives to ten minutes or more in System Setup.
TAN N/A
---------------------------------------------------------------------
The information in this data sheet is subject to change without
notice. AST Research, Inc. shall not be liable for technical or
editorial errors or omissions contained herein; nor for incidental
or consequential damages resulting from the furnishing, performance,
or use of this material. This material contains information protected
by copyright. No part of this material may be reproduced in any form
without prior written consent from AST Research, Inc.
All rights reserved.
---------------------------------------------------------------------
Template Rev 02