nghiem@ut-emx.UUCP (Alex Nghiem) (10/19/88)
I wanted to make sure that this message was not missed. Here we go again... __________________________________________________________________ Subject: Re: Standing Mac II Base Unit on end: is this safe? Newsgroups: comp.sys.mac Summary: Do NOT stand Mac II on its end!!!!!!!!!!!!!!!!!!!!! Do NOT stand Mac II on its end!!!!!!!!!!!!!!!!!!!!! Do NOT stand Mac II on its end!!!!!!!!!!!!!!!!!!!!! References: <3434@cs.utexas.edu> <4215@polya.Stanford.EDU> <316@ivucsb.UUCP> In article <316@ivucsb.UUCP>, steve@ivucsb.UUCP (Steve Lemke <steve>) writes: > In article <4215@polya.Stanford.EDU> shap@polya.Stanford.EDU (Jonathan S. Shapiro) writes: > >The only thing that I know of that you need to be careful about is > >that the mac draws cooling air in from the side, so it needs to be > >clear of the floor. If your floor is shag carpeted you will want to > >make sure that the intake is well clear of the rug. > > Actually, I believe that it blows air _out_ the left (bottom) side. I say > _bottom_ assuming that you are standing it up on the left side, which seems > to be the preferred side because a) the disk drives are at the top of the > machine, and b) the reset/int buttons are more accessible. NO! NO! NO! The internal Hard Drive in a Mac II is mounted side to side, NOT fore and aft as in a PC. Hard Drives, like the Seagate series, and probably others, are designed the be mounted flat, or on one edge or the other. In a Mac II, turning the system unit on either side would stand the Hard Disk on its face or on its rear. Seagate specifically says that standing one of their units on its face or its rear will VOID the warranty. ------------------------------------------------------------------------ nghiem@emx.utexas.edu "Why?... Because we LIKE you !!" ------------------------------------------------------------------------
korn@eris.berkeley.edu (Peter "Arrgh" Korn) (10/19/88)
The Quantum drive, which Apple uses for the internal 80Meg drive available
from them, is rated to operate in any orientation. That means on it's
front, on it's back, at wierd rakish angles, etc. Furthermore there are
a number of 3rd party internal drives, most not made by Seagate. The
CDC Wren series are amoung these. Many of these drives may not suffer
from the same orientation problems that the Seagate purportedly does.
To say that one must NEVER put a MacII on it's side, however, is wrong.
Peter "my MacII has been on it's side for 8 months and counting" Korn
--
Peter "Arrgh" Korn
korn@ucbvax.Berkeley.EDU
{decvax,hplabs,sdcsvax,ulysses,usenix}!ucbvax!kornmystone@caen.engin.umich.edu (Dean Yu) (10/19/88)
> > In article <316@ivucsb.UUCP>, steve@ivucsb.UUCP (Steve Lemke <steve>) writes: > > NO! NO! NO! > > The internal Hard Drive in a Mac II is mounted side to side, NOT fore and aft > as in a PC. Hard Drives, like the Seagate series, and probably others, > are designed the be mounted flat, or on one edge or the other. In a > Mac II, turning the system unit on either side would stand the Hard Disk > on its face or on its rear. Seagate specifically says that standing > one of their units on its face or its rear will VOID the warranty. Not true if you've got a Rodime. A friend has a Mac II and an internal Rodime 140, and he's got his Mac II Kickstanded (Kensington), and he's very happy with it. (And I'm very jealous because I've only got a measly 512K Enhanced...) ______________________________________________________________________________ Dean Yu | E-mail: mystone@caen.engin.umich.edu University of Michigan | Real-mail: Dean Yu Computer Aided Engineering Network | 2413 Kelsey House ===================================| 600 E Madison "These are MY opinions." (My | Ann Arbor, MI 48109 employer doesn't want them. |========================================== Actually, they don't really care | what I think. But President | This space intentionally left blank. Duderstadt does...) | ------------------------------------------------------------------------------
carl@Apple.COM (Carl C. Hewitt) (10/20/88)
In article <7043@ut-emx.UUCP> nghiem@ut-emx.UUCP (Alex Nghiem) writes: >I wanted to make sure that this message was not missed. >Here we go again... >__________________________________________________________________ > >Subject: Re: Standing Mac II Base Unit on end: is this safe? >Summary: Do NOT stand Mac II on its end!!!!!!!!!!!!!!!!!!!!! > Do NOT stand Mac II on its end!!!!!!!!!!!!!!!!!!!!! > Do NOT stand Mac II on its end!!!!!!!!!!!!!!!!!!!!! > >The internal Hard Drive in a Mac II is mounted side to side, NOT fore and aft >as in a PC. Hard Drives, like the Seagate series, and probably others, >are designed the be mounted flat, or on one edge or the other. In a >Mac II, turning the system unit on either side would stand the Hard Disk >on its face or on its rear. Seagate specifically says that standing >one of their units on its face or its rear will VOID the warranty. > Alex is right in that the drives were not intended to be put on their side, and Apple also recommends against doing this. However..... I have had mine on stands made by Kensington Microware Ltd. which keep the computer on end with enough room for the power supply to be cooled, and have never had any problems whatsoever. -- Carl
billkatt@caen.engin.umich.edu (Steve Bollinger) (10/21/88)
From article <3f267750.1285f@maize.engin.umich.edu>, by mystone@caen.engin.umich.edu (Dean Yu): It's true, I'm his friend and I am very with my Mac II on end. I was concerned about the orientation (having read the seagate manuals), so I asked someone from Rodime. He said any orientation in 3-dimensional space was OK. 4-dimensional space I'd have to call about. And now, Apple has switched from Quantums to Rodimes (so has Jasmine). So everything is peachy-keen. Steve Bollinger University of Michigan billkatt@caen.engin.umich.edu
LaserMan@cup.portal.com (Bob LaserMan Murrow) (10/21/88)
I have been reading all the comments about the mounting orientation. I called a good friend who happens to be the VP of Eng at Quantum and asked him what they think about vertical mounting. His response is that the unit is very tolerant to mounting in any orientation. Their is an increased risk of a fail to write error occuring if you shock the unit in the x-y plane due to the servo design. Quantum has added a feature that no other drive maker has called a bump detect circut that will make sure that the info is not written to the wrong track due to a bump in this axixs. he also says that the drive is very tollerant of jolts in the axis of the spindle and that a head crash is very unlikely. The airbearing is extreamly rigid as a design. The error will be the fail to write variety if anything happens. After all the techi chatter I asked him what they do, he said, we mount most of them vertically. This info is valid for only Quantum drives, I would expect that it does hold for others unless the manufacturer specifically excludes it as does Seagate. Bob Murrow laserman@cup.portal.com
nghiem@ut-emx.UUCP (Alex Nghiem) (10/22/88)
Bob Murrow stated that Quantum mounts most of their drives vertically. But does that mean most of their drives are mounted on their face or tail? I would think that most of their drives would be mounted vertically on one edge or the other. But, if Quantum drives have an aerospace application, then obviously they have to be tolerant in any direction. nghiem@emx.utexas.edu "Why?...Because we LIKE you!!!"
LaserMan@cup.portal.com (Bob LaserMan Murrow) (10/23/88)
nghiem@emx.utexas.edu quoted me on the comment I made on Quantum saying most of their drives were side mounted. What I ment by this was...of the drives they use in their own plant how are they mounted. The reply was vertically, due to the use of a stand of some sort used on MacII's and a similar device used on IBMpc's. Quantum makes the HardCard which is an internally mounted hard drive for MSDOS equipement. I should calify that the engineering manager did say that the prefered orientation is horizonal but...they and everyone elese uses it vertically and the design has now real reason built in that would demand horizonal mounting. The reason horizonal is prefered is that almost all of the testing is done in that orientation. Bob Murrow Laserman@cup.portal.com
fry@brauer.harvard.edu (David Fry) (10/24/88)
Partially inspired by this discussion, I turned my Mac II with original Apple 40 meg internal drive (Quantum system) on its side. Everything went well at first, but the second time I booted the computer, I got a "Finder is damaged" message and had to use the programmer's switch to reboot. I started it from a floppy, and everything acted normal (except it took a while to rebuild the desktop) and has continued to be normal since then. I don't have any trouble booting from the HD. Any clues what might have caused this and is this a sign of bad things to come? David Fry fry@huma1.harvard.EDU Department of Mathematics fry@huma1.bitnet Harvard University ...!harvard!huma1!fry Cambridge, MA 02138