I think what Eliza was asking and I too would like an experienced answer
on is "cohabitation."

Could I keep an offsite copypool that is "J" tapes and an onsite
"K" library?   If all I have are "E" drives that can read/write "J" and
"K"s???

Re-cycling the "J"s for offsite only is ideal as I only send tapes that
have reached "FULL" status off to Arcus every Wed.

thanks ... joe.f.

Joseph A Faracchio,  Systems Programmer, UC Berkeley


On Wed, 2 Aug 2000, Steven P Roder wrote:

> > > We have been using them since 6/25.  We have 300 3M K tapes.  No prolems
> > > at all.  We paid around $60/each, including labeling and initialization,
> > > although the vendor did properly label then internally for AIX/ADSM, as I
> > > had to label them all.
> >
> > Hi Steve,
> >
> > We are also looking into the K tapes.  Can the 3590-E1A drives with Extended
> > Media Support r/w both the old J tapes and the Extended Length K tapes?  Can
> > I use both kind of tapes or do I have to replace all 1000 J tapes with K
> > tapes?
> Hi Eliza,
>
>      Yes, the E drives can write to both the J and K tapes.  With the J's,
> you will have to mark all of your "filling" tapes R/O at conversion time.
> Once those tapes cycle back to scratch, and are reused by TSM, they will
> be reused at the new density, doubling their capacity.  The K's can also
> read the 128track J tapes.  If you do not upgrade all of your drives at
> the same time, and have to mix B and E drives, you will have to create a
> new storage pool, and a second logical library.  I would recommend against
> this, if at all possible.  The readme file for the TSM server has a good
> section on conversion of B to E drives.
>
> Hope this helps,
>
>
> Steve Roder, University at Buffalo
> VM Systems Programmer
> UNIX Systems Administrator (Solaris and AIX)
> ADSM Administrator
> (tkssteve AT buffalo DOT edu | (716)645-3564 | 
> http://ubvm.cc.buffalo.edu/~tkssteve)
>