18 Jul
2009
18 Jul
'09
11:13 a.m.
Mike Young <phillymopedman at yahoo.com> has a 'new in the box'
Microscience HH612 hard drive that he wishes to sell (10MB 5.25"/HH MFM ST412) - any
takers?
Contact him at: phillymopedman at yahoo.com
18 Jul
18 Jul
11:57 a.m.
On Sat, Jul 18, 2009 at 2:13 PM, steven stengel<tosteve at yahoo.com> wrote:
Mike Young <phillymopedman at yahoo.com> has a
'new in the box' ?Microscience HH612 hard drive that he wishes to sell (10MB
5.25"/HH MFM ST412) - any takers?
Contact him at: ?phillymopedman at yahoo.com
That sounds like the sort of drive that I commonly saw in early Mac
and Amiga external drive enclosures (along with an ACB4000 and the
like), if one is of a mind to (re-)experience 65ms-access-time
compiles and loads.
The NIB is a bit interesting - it must have been sitting on a dusty
shelf for a long time.
-ethan
20 Jul
20 Jul
4:59 a.m.
Ethan Dicks wrote:
The NIB is a bit interesting - it must have been
sitting on a dusty
shelf for a long time.
Yes, and I've often found that ST506/412 drives seem to suffer age-related
faults - i.e. they can go bad just from sitting there, rather than being
actively used. Personally I wouldn't risk it unless it had been tested...
cheers
Jules
3:20 p.m.
On 20 Jul 2009 at 6:59, Jules Richardson wrote:
Yes, and I've often found that ST506/412 drives
seem to suffer
age-related faults - i.e. they can go bad just from sitting there,
rather than being actively used. Personally I wouldn't risk it unless
it had been tested...
I wonder if being occasionally used extends their lifetime? I've got
a Quantum 540 that's been in more or less consistent use (powered up
every couple of months) and it's given no hint of problems. Maybe I
should hook up the nearly-new ST506 that's been sitting in my parts
cabinet for over 20 years to see if it even spins up.
--Chuck
3:39 p.m.
On Mon, Jul 20, 2009 at 6:20 PM, Chuck Guzis<cclist at sydex.com> wrote:
On 20 Jul 2009 at 6:59, Jules Richardson wrote:
Given that the two common HDA faults (not counting head crashes) that
I've personally seen from drives of that era are stiction (ST225 and
ST241 especially) and the rubber head-knock-stop turning to goo (DEC
RD53/Micropolis 1335), my answer would be probably yes and probably
no. It depends, I think, on what faults the model in front of you is
known for if running periodically would help or not. I think the
rubber-to-goo thing is entirely based on the design of the drive and
the composition of the rubber itself and not power-on-hours; OTOH,
periodic operation might help stiction, depending design/construction
factors such as too much/too sticky medium lubricant.
Overall, I'd say run some vs not at all is probably better, but I have
a stack of 5.25" drives that haven't been run in years. I'm planning
on checking my idle drives for stiction as I find places to install
them.
-ethan
Yes, and I've often found that ST506/412
drives seem to suffer
age-related faults - i.e. they can go bad just from sitting there...
I wonder if being occasionally used extends their lifetime?
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