Evotek Winchester Harddisk
t.gardner at computer.org
Mon Dec 7 13:26:45 CST 2015
Sorry If I didn't make myself clear, I am suggesting one never acquire an Evotek drive today other than perhaps as an historical curiosity.
The Finch was a short lived 8-inch HDD that went up to 42 MB unformatted BUT according to Disk/Trend It did not use an ST506 interface but instead came with this variety of interfaces: Finch, LDI, SMD or SA1000! So your problem is likely to be finding a drive that matches the interface of yr controller card. Some possibilities
· Finch interface was available on certain CDC Wren 5½-inch models, e.g. 9415
· SA1000 interface was available on the 8-inch Quantum Q2000
· SMD interface was available on CDC 8-inch FSD models; e.g., 9715
· I have no idea what LDI was
BTW the ST506 interface is a copy of SA1000 interface with the major difference being a slightly higher data rate so any ST506 might actually work but the problem might be low level formatting due to the unexpected track length. Depends upon the formatting utility
If u know what interface u need I can suggest models
From: Oliver Lehmann [mailto:lehmann at ans-netz.de]
Sent: Monday, December 07, 2015 3:55 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Evotek Winchester Harddisk
Tom Gardner < <mailto:t.gardner at computer.org> t.gardner at computer.org> wrote:
> The Evotek drive initially used the notoriously unreliable Ampex Alar
> plated media; whether they ever upgraded to sputtered media is
> uncertain. It probably should be avoided.
> I would look for an replacement drive using oxide media. The nice
> thing about oxide media is it came pre-corroded so that's one thing
> not to worry about in a 35 year old drive
OK, but I'm not looking for a replacement for en Evotek harddisk, but for a CDC FINCH harddisk. These drives seem to be so rare - I would not even care about the media the disks where made of ;) And - I found nothing "compatible" so far to replace them with other harddisks.
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