I have an old mac 7200. I want to remove one of the hard drives and
replace it with a larger one. It currently has a .5 and 2 gig drive. 
He $ value of the mac is next to nothing so I’m looking for a used
drive on ebay.  What type of a drive am I looking for? ATI, SCSI, 50,
80 pin. I just want to plug this in and go without any adaptor kits.
Currently both drives are Quantum.  I don’t really care about
formatting the disk, since the ‘other’ disk will have the system on it
and can be used to format the old drive. This is really a wiring sort
of question.

Hello.

The PowerMac 7200 has a DB-25 SCSI connector on the back, so you'll
need a SCSI drive. You'll want to get a 50 pin drive because that will
connect to the DB-25 without an adapter.

Source:
"DB-25 SCSI connector on back of computer"
PowerMacintosh 7200 profile, hosted by lowendmac.com
http://www.lowendmac.com/ppc/7200.shtml

Picture of the DB-25 connector
"Mac Ports, past and present" 
http://charm.cs.uiuc.edu/users/olawlor/ref/mac_ports/

I did some browsing on eBay and located some drives that will be
compatible with the 7200:

"4 gb Mini external scsi hard drive Apple/Mac"
includes: Apple-style SCSI cable (not shown). The included
25pin-to-50pin centronics SCSI cable plugs into the back of your
Macintosh.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2739451037&category=11149

"External SCSI 2GB Hard Drive,"
includes cable, available on eBay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2740145803&category=11149

"MACINTOSH EXTERNAL 17GB SCSI HARD DRIVE MAC"
includes cable, available on eBay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2740474274&category=11149

"PowerUser External 540 MB Mac SCSI Hard Drive", available on eBay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2739741195&category=11149

"2GB & 4GB External SCSI Hard Drives", available on eBay:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2739793775&category=11149

Some of the drives above come with a cable, but if you need one, get a
DB-25 to Centronics 50 pin cable.  Here's an example:
"DB-25 to Centronics 50 pin cable"
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3421742550&category=3668

search strategy:
powermac 7200, scsi,
scsi, db-25
ebay: mac, scsi, external, drive

I hope this helps. If anything is unclear, please use the "request
clarification" feature. Thanks.

---

Request for Answer Clarification by degrees-ga on 07 Jul 2003 22:11 PDT

Thanks , but my goal is replace one of the internal drives. The
external drives are just too expensive and small. so, i need the same
kind of info, but for the internal drive bays.

---

Clarification of Answer by juggler-ga on 07 Jul 2003 23:23 PDT

Okay, if you want an internal drive, you'll need a drive with 50-pin
narrow SCSI connector.

Examples:

4.2GB 50-Pin SCSI Hard Drive for Macintosh NR, [note that the PowerMac
7200 is specifically listed as being compatible:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2740285825&category=11150

4.2GB 50-Pin SCSI Hard Drive for Macintosh NR
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2740283372&category=11150

Mac 4G 50 pin SCSI Hard Drive "Like New"
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2739845198&category=11150

4.2GB 50-Pin SCSI Hard Drive for Macintosh NR
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2740286832&category=11150

“Brand New” Mac 4.3 GB 50-pin SCSI Hard Drive
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2740553317&category=11150

"Seagate 2 GB 50 pin SCSI Hard Disk for Mac"
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2740781831&category=11150

Additional eBay results in this category:
http://search.ebay.com/search/search.dll?cgiurl=http%3A%2F%2Fcgi.ebay.com%2Fws%2F&MfcISAPICommand=GetResult&query=scsi+hard+50+pin&categoryid=&ht=1&st=0&category4=11150&SortProperty=MetaEndSort&BasicSearch=&from=R2&catref=C3

I hope this helps. Again, if anything is unclear, please request
clarification. Thanks.

Answered the question and did the shopping for me. Saved me a lot of time. 
Thanks