AFAIR, the STK product was ExHPDM - Extended High Performance Data
Mover. It was "multiplexer" combining data streams from different backup
jobs into one large stream. Good for drives which cannot slow down, but
fortunately current drives can slow down to adjust the speed of
recording to the speed of data source (which is crucial to performance).
Regarding caacity - DFSMShsm can easily fill up any tape cart. Of
course, due to data expiration there is a need for recycling, but ...it
has always been taking place, even for MAGSTAR or 3490E drives. Yes,
larger capacity means longer time per cart, but also less mounts.
Regarding non-HSM data on tape ...NO. No direct tape use nowadays. Tapes
in batch are so 70's.
Last, but not least: VTS (optionally) utilize real tapes. Just like
DFSMShsm does. Those awful huge carts.
Regards
--
Radoslaw Skorupka
Lodz, Poland
W dniu 2018-11-23 o 18:38, Russell Witt pisze:
With the 20Tb/60Tb capacity, the only thing that would come close to "fully
utilizing" such a tape would be some massive single-thread backups
(remember, only 1 application can write to a tape at any given time) or be
used as a backstore in a VTS solution. For that, they are perfect (IMHO).
You can run 4, 8, 16, 64, or even 128 concurrent backups to a VTS solution
so you are done with backups much quicker. Then, as a background task copy
all those virtual-tape-volumes to a high-capacity physical tape(s) with a
20Tb or 60Tb capacity. Best of both worlds. Fast concurrent backups and
physical tape for high reliability and portability. Most sites prefer to use
replication, but I like a copy on physical tape. But, I have a huge affinity
for physical tape (actually, tape in any form suits me).
I remember the neat system that STK had for a while (still might) where you
can run 3 or 4 DFDSS backups to a single tape volume (the tape volume was
allocated to a different sub-task that the 4 DFDSS backups were
communicating with). It was neat that you could run 4 DFDSS backups
concurrently and since the tape was so fast it could keep up with 4 DFDSS
systems writing to it concurrently. But the benefits of a VTS solution
doomed that as well.
Russell Witt
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf Of Jousma, David
Sent: Friday, November 23, 2018 10:03 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Another IBM tape not for z/OS
Lately, all I have seen is virtual Tape emulated in dedicated VTS filled
with DASD. That's all we have now. Read/write and recalls are on par
with standard disk.
_________________________________________________________________
Dave Jousma
Mainframe Engineering, Assistant Vice President david.jou...@53.com
1830 East Paris, Grand Rapids, MI 49546 MD RSCB2H p 616.653.8429 f
616.653.2717
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf Of R.S.
Sent: Friday, November 23, 2018 10:58 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Another IBM tape not for z/OS
**CAUTION EXTERNAL EMAIL**
**DO NOT open attachments or click on links from unknown senders or
unexpected emails**
IBM released new tape drive TS1160.
20TB/60TB capacity, up to 400/900MB/s data transfer, dual 16Gbps interface.
You can attach it to your Windows server, or Linux (x64), but mainframe is
excluded, no FICON attachment.
--
Radoslaw Skorupka
Lodz, Poland
======================================================================
Jeśli nie jesteś adresatem tej wiadomości:
- powiadom nas o tym w mailu zwrotnym (dziękujemy!),
- usuń trwale tę wiadomość (i wszystkie kopie, które wydrukowałeś lub zapisałeś
na dysku).
Wiadomość ta może zawierać chronione prawem informacje, które może wykorzystać
tylko adresat.Przypominamy, że każdy, kto rozpowszechnia (kopiuje, rozprowadza)
tę wiadomość lub podejmuje podobne działania, narusza prawo i może podlegać
karze.
mBank S.A. z siedzibą w Warszawie, ul. Senatorska 18, 00-950
Warszawa,www.mBank.pl, e-mail: kont...@mbank.pl. Sąd Rejonowy dla m. st.
Warszawy XII Wydział Gospodarczy Krajowego Rejestru Sądowego, KRS 0000025237,
NIP: 526-021-50-88. Kapitał zakładowy (opłacony w całości) według stanu na
01.01.2018 r. wynosi 169.248.488 złotych.
If you are not the addressee of this message:
- let us know by replying to this e-mail (thank you!),
- delete this message permanently (including all the copies which you have
printed out or saved).
This message may contain legally protected information, which may be used
exclusively by the addressee.Please be reminded that anyone who disseminates
(copies, distributes) this message or takes any similar action, violates the
law and may be penalised.
mBank S.A. with its registered office in Warsaw, ul. Senatorska 18, 00-950
Warszawa,www.mBank.pl, e-mail: kont...@mbank.pl. District Court for the Capital
City of Warsaw, 12th Commercial Division of the National Court Register, KRS
0000025237, NIP: 526-021-50-88. Fully paid-up share capital amounting to PLN
169,248,488 as at 1 January 2018.
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
