Article View: comp.sys.mac
Article #2020Re: Leaving Hard-drives on
From: ben Ben Lian
Date: Tue, 25 Jul 1989 00:02
Date: Tue, 25 Jul 1989 00:02
45 lines
2822 bytes
2822 bytes
In article <Jul.23.19.59.42.1989.29681@galaxy.rutgers.edu> tantuico@andromeda (Samuel B Tantuico) writes:
>
>My friend says that it's better to leave a hard-drive on because
>it will cause less wear and tear. Okay, but he's got an IBM-PC.
>Does the same hold true for a Macintosh?... internal and external?
This hoary old chestnut again! I doubt that there was general consensus on
what the better policy is the last time this was raised on the net. Rodime
140 Plus (and 1400RX HD assembly) users will have probably discovered that
their drives like to be left ON. When my drive cools down, it has problems
spinning up to speed when next switched on. Sometimes I have to turn the
drive on and off several times (I counted 15 once!) before it spins up and
unlocks the heads. (Once upon a time half the problem was with the old Mac
Plus ROMS, but that has been fixed now. Thanks Apple Oz!) Once the drive
is nice and warm, there is no problem---it will restart reliably every
every time after being powered down. Obviously, the drive spindle is
siezing up when cold. I have heard of drives that sieze up so badly that
they won't even start spinning. In any case, I gather that having to
kick start a drive like that can cause more spindle wear than leaving it
on. What's more,the motor is going to get stressed more as it tries to
get the reluctant platters going. Furthermore, I'm told that frequent
warmup/cool down cycles don't do much good for electronic components.
Then again, I'm not an EE so I'm probably talking through my hat....
-- bl
-----------------------------------------------------------------------
Benjamin Y H Lian ACSnet: ben@tasis.utas.oz
Dept. of EE & CS ARPA : ben%tasis.utas.oz.au@uunet.uu.net
University of Tasmania BITnet: munnari!tasis.utas.oz!ben@
GPO Box 252C uunet.uu.net
Hobart, Tasmania 7001 UUCP : {enea,hplabs,mcvax,uunet,ukc}!
A U S T R A L I A munnari!tasis.utas.oz!ben
Tel: +61-02-202380 Fax: +61-02-202713
-----------------------------------------------------------------------
"Fortunately the computer virus did no harm to our records. It was
immediately devoured by all the bugs in our programming."
-- Cartoon, CW Australia
and can stress the drive motor
Technical Details
Message-ID:
<969@diemen.cc.utas.oz>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!uhccux!munnari.oz.au!murtoa.cs.mu.oz.au!ditmela!diemen!tasis!benReferences:
<Jul.23.19.59.42.1989.29681@galaxy.rutgers.edu>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!uhccux!munnari.oz.au!murtoa.cs.mu.oz.au!ditmela!diemen!tasis!ben From: ben@tasis.utas.oz.au@munnari.oz (Ben Lian) Newsgroups: comp.sys.mac Subject: Re: Leaving Hard-drives on Message-ID: <969@diemen.cc.utas.oz> Date: 25 Jul 89 00:02:38 GMT References: <Jul.23.19.59.42.1989.29681@galaxy.rutgers.edu> Sender: root@diemen.cc.utas.oz Organization: Elec Eng & Comp Sci, Uni of Tasmania, Australia Lines: 45