gatesl@romana.cs.orst.edu (Lee Ryan Gates) (05/09/89)
Hi, I have a question concerning RLLing and ARLLing Seagate 251-1's. I am
considering getting one of these for my system (I already have the drives).
From what I have read, the RLL gives 50% increase in both transfre and storage,
but the ARLL gives 90% increase in storage, but only allows 2:1 interleave. I
read an article here a while ago which talked about the window margin. It said
it should be under 60ns, but is that the total, or the individual inside and
outside times? Is there anything else I should know before taking the deep
plunge? I am most interested in the ARLL card, as it gives the 90% increase,
but is this just a new scheme for writing and reading from the drive, or is it
a compression drive, which has other things on it like microproccessors etc.
I am currently using a WA-3, and I don't know if the drives are rated for such
cards (approved by Seagate).
Also, if you know of any which are definitely proven to work, please send me
the manufacturer and model. I have heard of Parstore (sp?) cards, which are
supposed to be better, but I was hoping someone out there had already tried
this with 251-1's.
Sorry if I missed a previous conversation about this topic.
thanx in advance,
lee
--
gatesl@romana.cs.orst.edu
**
'must be Oregon, look there's another person with rust on 'em.'
gates@romana.cs.orst.edu 'anybody got a job for an aspiring cs undergrad?' :-)