Re: 6390 data capacity

["Chuck Morehead" <cbmorehead@xxxxxxxxxx>]

What I was basing my comment on was the method in which I've seen Maxell
label their tapes in the past.  However, prompted by your email, I went to
their website to see if things had changed.  Their documentation says that
the HS-8/160 tape has a capacity of 7.0/14.0*.  If you read the * note they
have the disclaimer about the 14 GB being drive dependent.  This would
indicate to me that it has an uncompressed capacity of 7 GB and a potential
capacity of 14 GB.  I don't have an explanation of why you encountered a
HS-8/160 tape that is labeled 3.5/7.0, since all I can find on Maxell's site
indicates a capacity of 7.0/14.0.  It doesn't really matter - the main thing
is that you have a tape with a minimum capacity of 7.0 GB  :)

Chuck

----- Original Message -----
From: <D.BALE@handleman.com>
To: <MIDRANGE-L@midrange.com>
Sent: Tuesday, May 22, 2001 4:35 PM
Subject: Re: 6390 data capacity


> Well, that conflicts with what others have said and what I've found so
far,
> which indicates that the 7.0GB rating on the 6390 is *uncompressed*.  But
if
> you have another source indicating otherwise, could you please point that
out
> to me?
>
> - Dan
> Dan Bale says "BAN DALE!"
> IT - AS/400
> Handleman Company
> 248-362-4400  Ext. 4952
> D.Bale@Handleman.com
>   Quiquid latine dictum sit altum viditur.
>   (Whatever is said in Latin seems profound.)
>
> -------------------------- Original Message --------------------------
> Dan,
>
> I believe the tape is rate for 3.5 GB of storage uncompressed.  With
> compression you can get up to 7.0 GB, however this largely depends on what
> kind of data you are backing up.  (E.g. program objects and database
objects
> back up with significantly different compression ratios.)  So if you can
get
> 2:1 compression you will get 7.0 GB on the tape, but if you only get 1.5:1
> compression then you will only be able to fit 5.25 GB on the tape.
>
> Chuck
>
> ----- Original Message -----
> From: <D.BALE@handleman.com>
> To: <MIDRANGE-L@midrange.com>
> Sent: Tuesday, May 22, 2001 3:17 PM
> Subject: Re: 6390 data capacity
>
>
> <snip>
>
> > I guess I'm stuck mentally (watch those snide remarks!) when I look at
the
> > Maxell HS-8/160 data cartridge sitting in front of me and right under
the
> > "HELICAL-SCAN 8mm DATA CARTRIDGE" reads the following:
> >
> >    160M/525FT. NOMINAL CAPACITY: 3.5/7.0 GIGABYTES
> >
> > Does this mean that the nominal (uncompressed) capacity is *either*
3.5GB
> *or*
> > 7.0GB, depending on the tape drive?
>
> <snip>
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