#Largest PAR drive ?
5 messages in this thread
To all,
What is the largest PAR compatible drive?. The latest information I have says
it's the Micropolis 2217A IDE drive with 1.626 GB of storage. Is this still
true ?
Will the Conner 1.27 GB IDE drive work better with the PAR ?
Thanks,
Don
Don,
>>Micropolis 2217A IDE drive with 1.626 GB of storage.
Still the largest.
>>Will the Conner 1.27 GB IDE drive work better with the PAR ?
It is a little cooler and has a higher percentage of usable space, but is still
smaller. It has also recently been discontinued. I actually have more m2217a
drives available, than conners!
Paul -Rising Star Graphics
Paul,
If the Micropolis has a higher capacity, then why does it have less usable
space ?
Thanks
Don
>>If the Micropolis has a higher capacity, then why does it have less usable
space ?
I'm sorry that I don't have my notes in front of me and my brain is celebrating
the summer solstice, but the idea has to do with peak performance. The more
full the drive gets, the less throughput you get. Most drives are have higher
throughput accessing the outer tracks and less on the inner tracks that get
used as the drive fills. The folks at DPS say the m2217a and the cfa1275a both
typically have a good 800MB before performance starts to drop off. Don't quote
me on the numbers, but that's the general idea. It is all usable unless it all
has to be the same high quality.
Hey guys! For your information, I am posting this memo I took of the DPS ftp
site (Yes, they have one, its noted below.) I hope this is helpful. This is
being posted verbatim and without the permission of DPS:
M E M O
TO All DPS Dealers and Customers
RE Compatible Hard Drives For DPS Personal Animation Recorder
DATE MAY 1, 1995 (Revised)
All models of the DPS Personal Animation Recorder require a dedicated IDE
hard drive. As of this date, the following drives have been certified for use
with the DPS DR-2100 (PAR-PC), DR-2150 (PAR-Amiga), DR-3100 (PAL PAR-PC) and
the DR-3150 (PAL PAR-Amiga).
Make Model Capacity Approx Record Time*
Conner* CFA-850A 850 MB 5-9 Minutes
Conner* CFA-1275A 1.27 GB 6-10 Minutes
Micropolis* 2217A 1.626 GB 10-14 Minutes
Conner CFA-540A 540 MB 3-5 Minutes
Conner CFA-1080A 1.08 GB 6-9 Minutes
Micropolis 2205A 542 MB 3-5 Minutes
Micropolis 2210A 976 MB 6-9 Minutes
Seagate ST-3600A 540 MB 3-5 Minutes
Seagate ST-3655A 540 MB 3-5 Minutes
Seagate ST-31220A 540 MB 3-5 Minutes
*Indicates Preferred Drive Types Although all of the listed drives can be
used, these drives have demonstrated consistently good playback and real-time
recording performance when used with the DPS Personal Animation Recorders.
When updating hard drives on existing PAR systems, it is a good idea to also
update your PAR software. You can download the latest software at no charge
from our 24-hour BBS. The DPS BBS phone number is 416-754-8368. In addition
to our BBS, we now have an FTP site on the Internet. The site is
ftp.dps-inc.com, the directory is "pub/DPS" (DPS must be in caps). This site
contains the release versions of all of our software. The BBS and the
Internet FTP service are open to both DPS dealers and end-users.
*Note: DPS does not sell hard drives directly and some of these models are no
longer in production. Drives are available from our dealers and from hard
drive speciality distributors. Do to the high performance nature of these
drives, it is important to ensure that adequate airflow is provided. In most
cases, a supplemental cooling fan is required. Figures listed are for total
time on a given drive. Because adaptive sampling routines are employed by the
DPS Personal Animation Recorder, it is not possible to provide an absolute
recording time. Factors such as image complexity, Q-factor, block size and
the amount of total hard drive capacity used for motion video storage can
cause significant variations in these numbers.