Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sdd.hp.com!spool.mu.edu!uunet!tellab5!wiseman From: wiseman@tellabs.com (Jeff Wiseman) Newsgroups: comp.sys.mac.hardware Subject: Re: Mac hard disks/orientation Message-ID: <6099@tellab5.tellabs.com> Date: 16 May 91 17:57:21 GMT Article-I.D.: tellab5.6099 References: <1991May12.032032.20327@midway.uchicago.edu> <2772@kielo.uta.fi> Sender: news@Tellabs.COM Organization: Tellabs, Inc., Lisle, IL Lines: 32 In article <2772@kielo.uta.fi> ccjapu@kielo.uta.fi (Jarmo Puntanen) writes: >In article hoepfner@heawk1.gsfc.nasa.gov (Patrick Hoepfner) writes: >> >> Laying any Mac II, Mac IIx, or Mac IIfx on its side is dangerous! >>This is because the hard disk is mounted with the read/write arm >>mounted sideways. This means that when you lay the Mac on its side >>the read/write arm is forced to move against gravity. This wears the >>arm out quicker. Apple can determine (I am told) that the wear has <> >Quite a number of those machines have Seagate hard >disks, whose installation manual (Universal Installation Handbook, >Seagate Publication 36042-001, Rev D.) reads (p. 12): "The drive may be >mounted horizontally ... or on either side (egde)." I am pretty >certain that this applies to other brands as well. In fact, in vast One point here is that where drive manufacture's DO have a warranty issue, it is from mounting the drive "face-down". The reason that mounting the large macII type enclosures on their side is an issue is because unlike IBM PCs which have the "face" of their hard drives mounted to face the front of the enclosure, the macII enclosure requires the drive to (usually) be mounted with its "face" pointing to the left or the right resulting in a face up or face down orientation when the enclosure is put on its side. I think that this is the part that gets forgotten sometimes during the discussion. If I were paying for everything out of my own pocket, I would not put the machine on its side. But that is just my preference since I have seen the warranties and also how fast those read/write heads need to change direction! :-) -- Jeff Wiseman: ....uunet!tellab5!wiseman OR wiseman@TELLABS.COM