Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!uxc!uxc.cso.uiuc.edu!uxg.cso.uiuc.edu!uxa.cso.uiuc.edu!jth90342 From: jth90342@uxa.cso.uiuc.edu Newsgroups: comp.sys.mac Subject: Re: Mac II internal HD's: 2 possible? Message-ID: <111900035@uxa.cso.uiuc.edu> Date: 18 Feb 89 22:38:00 GMT References: <10011@pasteur.Berkeley.EDU> Lines: 47 Nf-ID: #R:pasteur.Berkeley.EDU:10011:uxa.cso.uiuc.edu:111900035:000:2919 Nf-From: uxa.cso.uiuc.edu!jth90342 Feb 18 16:38:00 1989 >/* ---------- "Mac II internal HD's: 2 possible?" ---------- */ > >I have a general question that I'm sure *somebody* can answer. Is it possible >to install 2 internal hard disks in a Mac II? Easily? I can't think of a reason >why not, except that I've never heard anybody advertise the process or product. >Specifically, how about a 1/2 height 5-1/4 drive in the "normal" spot (where my >CMS 60 MB drive sits) and a 1/2 height 3-1/2 drive (possibly the Quantum 80 MB; >any comments about it?) in the spot *not* occupied by a second floppy drive. >There's only one SCSI connector on the motherboard, and my CMS has no piggyback >connector, but maybe somebody's drive does? >------------------------------------------------------------------------------- >| Glen Rosendale | UC Berkeley | glen@cory.berkeley.edu | >| ++++++++++++++ | =========== | ---------------------- | >------------------------------------------------------------------------------- I needed to setup this kind of configuration a few days ago. I have an 80Meg internal hard drive (the 3 1/2" Quantum), which through entirely my own fault crashed. I was able to recover all 78Meg I had on it using the Symantec Utilities. However, my only options for doing the backup was to archive onto approxiamtely 140 floppies or on a single volume that could hold the entire contents. The only large hard drive I had access to was an 80Meg 5 1/4" Apple internal. All that needs to be done to accomplish the hookup is an IDC daisy chain cable and a Y power cable. The IDC daisy chain cable is simply like the ribbon cable that currently connect the drive to the motherboard, with the addition of another connector in the middle. The cable can easily be made with parts from any electronics store, with the most complicated thing being making sure that all the pin 1s match up (ie not very tough...). The Y power cable can be purchased from nearly any computer store as it is the same cable needed to hookup 2 internal floppies in IBM PCs and ATs. The SCSI protocol and hard disk drivers support the configuration without any problem or modification. The 3 1/2" Quantum 80Meg is an amazing drive. It is blazingly fast and very quiet. I have never had any problems with it in extensive and abusive use. The drive has an on board 64K RAM cache that speeds its already quick 19ms access time to roughly 12-13ms. I cannot recommend it highly enough. If you are interested in purchasing one, I have a source that sells them for $1075. If you have any questions, call me or e-mail to: 3 1/2" Quantum 80M source: Jeff Huber - U of Illinois Venture Computing ph. (217)356-6982 701 Devonshire Dr., C-12 email: jth90342@uxa.cso.uiuc.edu Champaign, IL 61820 ph. (217)351-7084