Re: Tape Library Experiences

While for obvious reasons I disagree with a number of Daniel's statements,
the last statement:
 
Also, when buying the Storagetek LTO, you don't really know what kind of
drives you will get in your library(HP, Seagate, IBM). This has made some
problems in the past, as all drives aren't equally supported by Tivoli(or
wasn't at least).
 
is particularly problematic in that when a customer orders a LTO library
from STK, they have the CHOICE of LTO transports from either IBM, HP, or
Seagate.  These drives all have different performance characteristics and
attributes, allowing the customer to choose the best transport for their
environment.  While device support for a particular vendor offering may come
at different TSM software levels, if a drive is supported by Tivoli, it is
supported, period.
 
Thanks,
Bernie Survoy 
Consulting Systems Engineer 
Phone:  216 615-9324 
Cell:      330 321-3787 
StorageTek 
Information made Powerful 

 
 -----Original Message-----
From: Daniel Sparrman [mailto:daniel.sparrman AT EXIST DOT SE]
Sent: March 07, 2002 12:57 AM
Subject: Re: Tape Library Experiences



Hi

I have experience in both L700, 3584 and 3583.

Whats the reason for doing a combination of either 3584/3583 or L700/L80?

The 3584 is probably the library that is easiest to install and manage. It
is also the library that is most expandable(6 frames).

The 3583 is as the 3584, very reliable.

However, I'd guess that the IBM libraries is a bit more expensive than the
Storagetek libraries.

The L700 is a good library, however normally the support from StorageTek
when using TSM isn't as good as IBM support. I've had some firmware and
drive level problems earlier with the L700.

My best advice, is to use a fibre-attached 3584 library. The throughput from
the fibre drives are much better than using LVD or HVD.

I've seen throughput up to 28MB/s through a SAN switch using FC drives on
the 3584.

With the 3583, you only get LVD/HVD, but you can attach it to a SAN using
SDG modul. This isn't a performance upgrade though.

Also, when buying the Storagetek LTO, you don't really know what kind of
drives you will get in your library(HP, Seagate, IBM). This has made some
problems in the past, as all drives aren't equally supported by Tivoli(or
wasn't at least).

Best Regards

Daniel Sparrman

-----------------------------------
Daniel Sparrman
Daniel Sparrman
Exist i Stockholm AB
Bergkällavägen 31D
192 79 SOLLENTUNA
Växel: 08 - 754 98 00
Mobil: 070 - 399 27 51


"Marvin, John H." <John.Marvin AT MICHAELFOODS DOT COM>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
2002-03-06 14:18 CST
Please respond to "ADSM: Dist Stor Manager"

To: ADSM-L AT VM.MARIST DOT EDU
cc: 
bcc: 
Subject: Tape Library Experiences




Hello ADSMer's,

We are trying to decide on which LTO tape library to purchase for our UNIX /
NT environment. This library will be replacing a STK 9710 with DLT 7000
drives.

Our environment is:
       TSM Server 4.2.1.11, on AIX 4.3.3 / Winterhawk node.
       Clients range from 30+NT servers,
       150 desktops,
       SAP R/3 on Oracle  (500GB on S7A),
       SAP BW on Oracle (150 GB on SP2's),
       and 15+ other Oracle databases on both NT and SP2's

We are looking at purchasing a combination of either the IBM 3583 and 3584
or the STK L80 and L700.
We would be interested in hearing any experiences (good and bad) for either
the IBM or STK products.

Thank You,

John Marvin
SAP R/3 Basis - Oracle DBA
Michael Foods, Inc
952.595.4787
mailto:john.marvin AT michaelfoods DOT com <mailto:john.marvin AT michaelfoods 
DOT com>