Re: Apple2 Archive Update

[tbc@netcom.com (Mike Garvey)]

In a prior missive, Gregory Ross Thompson <gregt+@CMU.EDU>  elqouently
scribed this stuff:

>  I highly recommend that whoever does the buying does NOT get a
>Seagate.  I know tons of people (including myself) who have had
>Seagates develop stiction problems WAY before they should.

Stiction is usually a problem only with the older, lower capacity Seagate
drives such as the ST-277.  The higher capacity drives use technology
purchased when Seagate absorbed Imprimis -- they are top-notch and very
failure-resistant.

>  I've got a Conner CP3200, and it's a VERY nice drive, so I imagine
>that their >1G drives are also amazing.  I've also heard recently of
>>1G drives with spindle speeds around 6300 rpms giving them access
>times of 8.5ms, and head transfer rates in the neighborhood of 5Mbps.
>Nice.

I've had bad experiences with Conner drives being DOA out of the box or
developing bad sectors remarkably soon after formatting/partitioning.  If
this was an isolated case I'd shrug it off, but it has happened much to
frequently for me to recommend Conner drives.

Here is an excerpt from the ST-11201N data-sheet showing its speed values:

       INTERNAL TRANSFER RATE (mbits/sec) _______22 to 40
       EXTERNAL TRANSFER RATE (mbyte/sec) _______4 Async
       EXTERNAL TRANSFER RATE (mbyte/sec) _______10 Sync
       SPINDLE SPEED (RPM) ______________________5,411
       AVERAGE LATENCY (mSEC) ___________________5.4
       AVERAGE ACCESS (ms) (read/write)__________10.5/12.0 *
       SINGLE TRACK SEEK (ms) ___________________2.6 *
       MAX FULL SEEK (ms) _______________________26.6 *
 
* Including on-board controller overhead (0.6ms less
  without overhead).

Not too shabby, would you say?

(Wanders off mumbling something about for 0-300 MB, I choose Quantum; for
>300 MB, I choose Seagate first, then Quantum (only because Quantum has
just recently gotten into the big-drive market).  Sometimes, I choose
Maxtor drives of any capacity)

Be seeing you...
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