We have a 160GB database running smoothly. No need to break it apart as we
dont see any performance degradation. Only thing you'll need as your
database grows is hardware that will met up with the requirements of TSM.
Agreed!
We have 2 tsm servers with database sizes of 120gb and 140gb.
You
Be kind . . . . don't laugh tooo hard . . . .
I thought I'd share this.
I got tired coding dsmadmc cmd line sql cmds like the following in ksh
scripts . . .
dsmadmc -id=admin -password=admin -tab \
select entity, count\(\*\) \
from summary \
where
Several comments:
- the initial full will run a long time
- turn on client compression
- implement QOS (quality of service) on the routers to limit tsm traffic
I don't know much about this last item, but our network folks just made
changes
to our routers to limit tsm traffic to no more than 80%
You can't. To be short, you need 1 license / cpu for the servers. OS
doesn't
matter. The license count on the server is based on the number of active
nodes. So the number of license you have to buy have nothing to do with
the
numer reported by the TSM server.
Here is an example of how TSM
Make sure you understand the effect of moving to roll-forward mode.
- Is your log large enough
- how often will incrementals run
- will your log fill before incrementals finishes at peak processing
Here is info we collect each day from a script. It shows our log usage
over
the last 24 hours.
Hi Everyone . . .
I'm trying to do a couple things . . . .
1) Trying to get a listing as follows, where the occupancy filespace
stats are sum'ed for each node, with the node domain thrown in:
like this: node domain sum-files sum-physicalMB sum-logicalMB
Here is the command I'm trying
Here is the backup info for one of our tsm db's . . . .
tsm db size: 25,505,789 used pages
tsm: tsm 5.1.7
os: AIX 5.1
processor: 7038-6m22p2g
tape drives: 3590h
disk subsystem: emc symmetrix with raid-S (yuck, but is working well)
backup duration:
2.5 hours to virtual volume on
My TSM database is currently about 220GB, 98% utilized and growing
steadily. It hasn't posed a serious problem, other than having to throw
disk at it. Backup takes 1.5 - 2 hours to LTO2 tape.
Our tsm databases are about half this. As they've grown we've been able to
scale the server to keep
Yes, is's a cancel expiration cmd we use.
Richard Sims
[EMAIL PROTECTED] To:
ADSM-L@VM.MARIST.EDU
Sent by: ADSM: cc:
Dist StorSubject: Re: TSM DB -- How big
is
I'll take a shot . . . .
Could this be a routing issue?
You may have a default route setup to point to the router on the private
network. All hosts not on the locally attach networks ( that are arp'able
) will have reply packets sent to the default route. If this is the case,
then you will
At 17:05 3/2/2005, you wrote:
Now that I have it fully running, I have to agree that this product is
horrible and slow (even on the new dual-processor 3Ghz 2GB RAM system we
bought just for it).
We are just beginning to plan our TSM v5.3 upgrade from v5.1. I've been
reading all
the emails
I'm trying to tune our mount retension settings on our device classes.
Currently, we have it set to 3 min for our 3590 drives. I'm not
finding much info on how to tell if our 3 min period is too long or too
short.
1st try . . . .
I sorted the mount messages (anr8337i)in a actlog listing of 24
:Aix v5.3
:TSM v5.2.3
I thought TSM wasn't supported on AIX v5.3 for either TSM v5.2 or TSM v5.3.
Rick
Jonathan Kaufman
I've come at orphaned filespaces from a little different angle.
What I do is get a list of filespaces that have not
been backed up in some number of days. This helps for when filesystems
on nodes get removed and the filespace with active files just sits in tsm .
. . forever.
This sql produces a
Would you possibly be willing to give your thoughts on your EMC CDL and why
you are switching vendors?
Thanks
Rick
Richard Taylor
[EMAIL PROTECTED]
USTo
Sent by: ADSM:
We are having discussions about upgrading to TSM v5.4. The question of
compatibility of server-to-server communications came up, and whether
we have to upgrade all tsm instances at the same time or can we
roll through them upgrading one at a time. In researching
this, I became confused (common
Hi,
Here are some thouthgs/comments to think about and/or look at . . .
I assume you are running Gigabit Ethernet.
CHeck that the nic is indeed running at GE, and not 100mb.
The log/db/stgpool, how are they setup on the clariion? Are
they all residing on the same set of spindles? Are you
We are in the process of making some major changes to our TSM systems.
part if this is moving
our primary tape storage pools to new 3584 libraries (from 3494). We just
finished moving
the first of of two big pools. I thought I'd share how this worked.
We have a primary tape pool in our TSM1
Hi everyone,
Has anyone out there, on AIX, ever used TCP/IP on
Fibre Channel (fcnet devices) for backups?
I'm brain storming for ways to provide backups at greater
than GE speeds, but not having to purchase any
additional software (ie: lanfree storage agent). A year
or so ago I tinkered with
I'd love to have a couple vtl's . . . .
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 06/08/2007
05:34:03 PM:
Yes, tape is still cheaper, but if you compare the price of a large VTL
with de-dupe to an equivalently sized tape library, they'll be a lot
closer than you think
I'd love to
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 06/12/2007
09:30:58 AM:
On Mon, 11 Jun 2007 23:50:20 +0100, Neil Schofield
[EMAIL PROTECTED] said:
- Since the conversion of a pending delete volume to a scratch tape
takes
place purely in the TSM database, a virtual scratch tape will
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 06/21/2007
01:25:59 PM:
“ show slots ltolib”
Slot 216, status Allocated, element number 1241, barcode present, barcode
value A00246, devT=LTO, mediaT=394, elemT=ANY
Slot 217, status Allocated, element number 1242, barcode present, barcode
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 06/22/2007
07:44:16 AM:
Because barcode are not recognized by the lib ?
This is interesting . . . we have 2 3584 libs (different sites).
From our lib 3584isoc, I get likes like this:
Slot 0, status Allocated, element number 1025, barcode
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 06/22/2007
07:44:16 AM:
Because barcode are not recognized by the lib ?
Also . . the 3584 lib web interface knows about the VolumeSerialNum in each
slot.
-
The information contained in this message
PROTECTED] De la part de
Richard Rhodes
Envoyé : vendredi 22 juin 2007 14:34
À : ADSM-L@VM.MARIST.EDU
Objet : Re: [ADSM-L] show slots cmd
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 06/22/2007
07:44:16 AM:
Because barcode are not recognized by the lib ?
Also . . the 3584 lib web
I'm no expert in networking, but I do know that you have to be careful
with multiple
interfaces in that that they may not work as you expect.
For example . . . are the client nodes on the same network as the TSM
server? By
network, I mean the network part of the ip address. If they are not
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 06/27/2007
09:10:41 AM:
What if we define a third instance (as a second instance on the new TSM
server) that becomes the library master only?
That's how we did it on the advice of many others from this list and
our local IBM people. It's
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 06/27/2007
02:48:59 PM:
I realize you that you do not want to use EtherChannel, my question is
why not? Asking for another couple of adapters and an extra couple of
switch ports should not be a big deal these days.
EtherChannel on AIX will
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 06/27/2007
04:08:20 PM:
It's nice to have a 32 cpu p590 with an lpar with 1 cpu (hard limited to
10%
of a cpu) and I want to backup the oracle database on that lpar with
rman.
This costs me 32 x the license of the tdp .
We just had this
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 06/27/2007
06:08:32 PM:
Agreed - if you want to load balance across multiple interfaces, then use
Link Aggregation [on the AIX end] and bonding on the network switch end.
Using a non-link aggregated interface and to simply have fail-over
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 06/28/2007
01:02:27 PM:
The compression algorithms in tape drive hardware are usually the
best, and though will attempt compression per your settings, the data
will not expand as in some host software compression algorithms.
A long time ago
How can you tell when MAXSIZE on a disk pool is exceeded
and a file sent to the NEXTPOOL?
A couple days after implementing MAXSIZE for the
disk staging pool I queried the CONTENTS table
for files greater than the MAXSIZE I set for the
disk pool - I found several. So I'm trying to
understand if
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 07/11/2007
02:39:52 AM:
version 5.4.0.3 it is not possible to have a NEXTSTORAGEPOOL on a copy
pool
to migrate data from stage 1 DISK to stage 2 on TAPE, it is also not
possible to make a script to use move data command to move data from
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 07/11/2007
10:34:18 AM:
Do you keep all of your Copy Pool tapes in the library?
Yes, the copy pool is offsite from the primary, but connected via
DWDM. All tapes are within the libs - no manual tape movement.
So we have a onsite 3584/3592
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 07/11/2007
02:01:16 PM:
Has anyone used SATA drives for primary storage. Is it really a bad
idea?
I've been using some SATA disks for a primary staging pool for a few
months.
It was the only storage we had at the time . . . so I used it.
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 07/13/2007
10:23:42 AM:
From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of
Lawrence Clark
a q node would show those clients that have not accessed the system
in
some time.
Yes, but if only a subset of filespaces are
We are starting to plan for upgrading our tsm servers to v5.4, and I'm
confused.
Current setup: all tsm servers are at TSM v5.3.3
server A - tsmapp (lib client of BOTH tsmlm1 and tsmlm2)
(site 1)
server B - tsmlm1 (dedicated lib manager for site 1 libraries)
(site 1) tsm1 (lib client of
To create a db with raw volumes . . . .
create a vg: mkvg . . . .
create log vols: mklv for each log vol
create dbvols: mklv for each db vol
create db . . . Here is the script/cmd I used to create a tsm db on the
raw vols
rsfebkup7p.fenetwork.com:/tsmdata/tsm3/config==cat
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 07/30/2007
03:00:02 PM:
Here's some perspective from someone who's currently transitioning from
Networker to TSM.
Dave, thanks for the very informative email.
Many years ago we ran Legato Networker. I've stayed out of this discussion
Your comments on NetWorker's licensing couldn't be more spot-on. FWIW,
MOST backup products are similar; TSM is one of the very few with
licensing as simple as it is. One other, although completely different,
product with a simple licensing model is Asigra, where it's pure
capacity-based -
Storage agent version, release, level, and sublevel must match the TSM
server's exactly.
I just asked this question of IBM support in relation to a planned TSM
upgrade (5.3.3 - 5.4.1).
They pointed me to Technote 1193179. IBM tests and supports up to n-2
maintenance releases.
Rick
I am not understanding the crucial advantage(s) of using virtual
volumes to backup a data center to a remote site. Why not backup
nodes in a remote data center to a TSM server in a local data center?
Sure, do it, we backup many remote sites to our central datacenter.
The question is, what is
Richard,
You asked thought provoking questions, but didn't answer mine.
Hi, again . . .
I guess I don't quite understand the situation.
You have a remote site with a server you want to backup to your TSM server.
Then, you ask why you would need VV's back at the remote site. What I
don't
Richard,
I'm sorry I haven't made our situation clearer. In the current phase
of the project we are building a TSM server in Bloomington to backup
local clients to disk which will be migrated to virtual volumes in
Indianapolis. After migrating local clients to the new server, we
plan to
I said . . .
Let me see if I fully understand . . . .
Bloomington
TSM-a
local clients backup to disk pool
disk pool migrates to TSM-b/VV at Indianapolis
== primary tape pool is on TSM-b/VV at Indianapolis
vv server - contains primary pool from TSM-b
Indianapolis
TSM-b
I wrote a report including the points mentioned above and some more (I/O
performance, raw devices, quick etherchannel, easy expansion as they are
targeting a p520, mksysb, LPAR, dynamic reconfiguration) but would like
to hear from you if I forgot something really big that could be the
point
In reading over the IBM procedure for upgrading atape
on AIX (article 1174910), it says to removed the tape and
lib devices from AIX (rmdev -dl fmtX). Is this really
necessary? Can you just drop them to a defined state
(rmdev -l rmtX) for the upgrade so as to not mess up
the paths? Also, is it
to the drives.)
I'd stick with the tried and true.
Ben
-Original Message-
From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of
Richard Rhodes
Sent: Thursday, September 06, 2007 12:44 PM
To: ADSM-L@VM.MARIST.EDU
Subject: Upgrading atape and atldd
In reading over the IBM
I'm trying to install ISC/AC for TSM v5.4. The installation
is failing.
ISC/AC server: AIX v5.3ml3
server memory: 4gb
server /opt size: 6gb, with 3gb free
ISC/AC: v5.4 (release that came with TSM v5.4)
The install fails with the following message in the GUI:
Integrated Solution Console
Hi Everyone.
About a month ago we upgraded our TSM instances from V5.3.5 to v5.4.1.
Since then we have had sporadic crashes. An instance will core dump.
The TSM activity long shows nothing unusual before the crash. The
AIX (v5.3ml5) errpt shows the core dump (software abnormally
terminated),
What happens when . . . .
On a Windows server doing journal based backups (client 5.3.3) when the
backup hits
an open file and cannot be backup up. Will it stay in the journal and get
backed up
the next day?
Thanks
Rick
-
The information contained in
There is always the risk that when you read off of EVERY tape to write
to new media, you will find some un-readable data, (which is what you
always hear folks saying about tape), but in our case we read over 800TB
of data with over 700,000,000 objects and had 32 files comprising 5MB
that was
Second, look for a client node who is doing this to you. Build a script
to capture the output of SHOW LOGPIN periodically and look for trends -
you may see one particular client node doing this to you over and over.
Here is what we use. Our daily report, generated at 6am, pulls data from
Hi Everyone,
We're struggling on how to setup TDPO and LanFree. Not the mechanics on
making it work, but on the best way to use it.
We would like to do the following:
1) Oracle DB backups go LanFree straight to tape.
2) Archive logs go LAN to a disk pool, then migrated to tape.
3) Archive
Hello . . .
(I hope I can ask this without making it so confusing that
I don't even understand what I'm asking.)
We have 2 datacenters with a SAN connecting them. All tsm instances,
library manager instances, libraries, and drives are on this SAN.
The 3584 libraries at each datacenter have a
Is there a list somewhere of what server commands a storage agent supports?
The storage agent manual doesn't seem to give a list of support commands.
Some commands work find (q sess, q mount), but others get routed to
the tsm server.
I can't find a document for what commands work, and how.
rick
We are currently implementing tdpo/lanfree backups for our large databases.
I'm not the dba, but I'm working
real close with him. Here is our understanding and what we have found.
Their concerns:
1) RMAN doesn't deal with non-transactional DB data loads well.
(i.e. data loaded
Sometimes I want to have TSM test out a tape drive.
Something like . . .
- pick a drive
- pick a tape
- have tsm mount the tape and read the label (or something)
- tell me this succeeded or not
Like yesterday . . . IBM repaired a tape drive. After fixing it, IBM
tells us it's fixed. We
Which is really a hard thing to do if you have more than say four
drives!
Kelly J. Lipp
and
Sounds to me like you have too many tape drives. Did you tell your CFO
of your woes? I'm sure this should be a consideration during your next
budget cycle.
Cheers,
Neil Strand
Hi guys . . .
Richard --
To Roger's point, I have yet to figure out how to highlight, annotate,
and/or add post-it type notes to a pdf. I usually end up printing
subsets and scribbling all over them. If I can grab the text and do a
copy/paste, I'll go that route.
Tom Kauffman
NIBCO, Inc
I use to do this, and
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 01/16/2008
10:16:38 AM:
But many times, overlap can't be avoided.
Exactly.
- we run expiration around the clock.
- If the disk pool fills, we've got migrations running along with backups.
- We run movedata/reclamation around the clock. (we
A quick list of the files installed with TSM v5.4.1 shows these files which
are not in the normal directory structure. By copying the binaries you
will still be using these common files,
Also, there are subdirectories under the normal bin dir. It's possible
that subdirs in the normal bin dir
For our 3584 library, we monitor it with:
- it is setup with dial home to IBM support
- a ksh script that checks for offline paths/drives
- a ksh script for too many mount requests over a period of time
Rick
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 01/29/2008
03:30:41 PM:
We have had several instances of slow backup times to Win servers (with 1gb
connections) where the throughput looked almost exactly like 100mb
connections. As we looked at it, we found that all access to these servers
(including backups) was going through a BigIP box with only 100mb
connections.
Also, are you sure you can read the data off of disks any faster?
I'm not sure what the equivalent cmd would be on Windows, but on Unix
I'd try a dd if=file of=/dev/null bs=128k (or some variant) and see
just
how fast the data can be read from the drives.
Rick
Allen S. Rout
We have a server that is using Oracle/Rman/TDPO/LanFree backups. The node
is set to allow 2 mount points. Yesterday at the start of a backup TSM
threw out
an error saying that channel 2 could not be allocated because the node
had exceeded it's mount points:
10:56:29 ANR0539W Transaction
- Allen S. Rout wrote
I've got some sentiment on the UF campus that anything which could be
retrieved by a data-recovery house should be deemed not deleted. This
is making me wince at the thought of turning 3592 volumes into
single-use disposables.
So how do you-all do it, and how did you
What kind of data is it?
If mostly static files, we like to use rdist (robocopy on windows). Run it
every so often, then a final run at cutover. You can multiple parallel cmds
if need be.
If a database you can use a backup/restore with rollinig logs (at least for
oracle). We have moved Multi
But the 3584 we have remotely is
bloody -fast-. Scary fast.
I flinch evertime I watch the robot in the 3584 and it moves to
the home frame. I keep thinking it's going to fail to stop and break
through the window.
-
The information contained in this
Directions for setting up the gui on SSL are in Appendix D of the admin
reference (for v5.4, not sure about v5.5).
Rick
Weber, Todd
[EMAIL PROTECTED]
RYFINANCIAL.COM To
Sent by: ADSM:
When I moved our primary pools from 3494/3590's to 3584/3592's, I used
movedata.
I found the movedat was much easier to control the process. I coded a
script that would vary
the number of movedata's running concurrently depending upon the number of
free/available tape drives. During the day It
Before we perform a major upgrade on our TSM servers, we do a test upgrade.
We do a backup to disk, restore the backup to a test server (at the proper
aix/tsm versions), then perform the upgrade. Care must be taken not to
allow
server-to-server communications (bogus ip addresses in the hosts
8 drives * 2 ports * 4 HBAs = 64 rmt devices for my 8 drives.
Ahhh, that's nothing I've got 348 rmt devices on both of my big tsm
servers.
66 PRI drives, and 282 ALT drives.
We used the one HBA to multiple tape drives method. But, I use multiple
zones
for library and grouping of drives in
We run TSM server 5.4.1 and have some old 5.1.6 clients running just fine.
These are old AIX 4.3.3 servers still hanging around.
rick
Paul Zarnowski
[EMAIL PROTECTED]
To
Sent by:
There is a presentation out on the web from the Oxford 2007 Symposium about
TSM dedup. From reading it, I'm sure just how useful it will be. It only
supports FILE devices (files are re-duplicated when written to tape) and
duplicate blocks are not removed until reclamation (you don't get the
This might seem really dumb/stupid, but I figured
I'd share it so someone else might doesn't make the same mistake.
We have 2 TSM dedicated library manager instances. These
currently run on servers with other TSM instances. We
are setting up new servers (tiny lpars) to provide dedicated
servers
We have 2 library manager TSM instances which resided on
servers with other TSM instances. We decided to move these tiny
library manager instances to their own servers/lpars to isolate them.
We did this last Saturday.
We moved the library manager instances by backing them up and
doing a restore
We did some TSM work over the weekend. We ran into a problem and needed
IBM help.
I opened a PMR via the web/ESR. I got a call back about 30-40m later. The
support
person told me something very interesting - if you need help over the
weekend DO
NOT open the case on the web - CALL IT IN. He
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 05/22/2008
12:36:11 PM:
3) We put the clients name into a tracking file with the decommission
date, so we don't forget when 90 days is up.
We rename the node with a prefix so decommissioned nodes are easy to spot
in a q node listing. We
in the CONTACT node field with the date the
node can be deleted from TSM, and the ticket number of the request
that asked us to retire the node.
Richard Rhodes wrote:
ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU wrote on 05/22/2008
12:36:11 PM:
3) We put the clients name into a tracking file
One thing to look at is whether the filling tapes are getting used.
We have had a problem for years with what we call stuck filling tapes.
These are filling tapes that appear to never, ever get reused. We went
around and
around with support on this issue with no resolution. We finally
decided to
together what's on it.
Any thoughts or comments on how to implement this, or other issues around
it, are
greatly appreciated.
Thanks
Richard Rhodes
-
The information contained in this message is intended only for the personal and
confidential use
What kind of LAN?
You must match the speed you can read the date from the source disk drives,
the speed
the data can be sent across the lan, and the write speed of the tape
drives.
We run LTO I drives to backup our SAP systems. We use SAn attached disk
and SAN
attached LTO drives. We are
We recently did a full restore of a Netware server. Basically, we're
interested if the restore time sounds reasonable - it doesn't to us.
The server that was restored is actually at a remote site from the
TSM server location, but the restore was done at the TSM site, then,
driven to the remote
Yesterday I asked about a long Netware restore.
In playing around, we are tring to perform a restore of the
backupset that we created.
The backup set looks like:
4 tapes (IBM 3590)
Size: 240gb
Files: 938,617
Backup from: NW5.1 SP3
Restore to: NW5.1 SP3
TSM client v5.1
When we start
We run a p650:
- 2 processors
- 4gb memory
- drives 14 3590 tape drives via 6 FC adapters
- 2 GE adapters to the network
- lots of disk driven by 4 FC adapters
It has plenty of power to drive this config . . . . .
Rick
Tae Kim
about 500.
-
The information contained in this message is intended only for the personal and
confidential use of the recipient(s) named above. If the reader of this message is not
the intended recipient or an agent responsible for delivering it to the
Hi Everyone,
I'm looking for a way to determine what management classes our
nodes/filespaces use.
I thought this would be easy . . . . .it probably is, but I seem to be
making it hard.
I couldn't find a normal TSM query to provide this data, so I tried a sql
query . . . .
select distinct
to get the info you want.
Hope that helps.
Wanda Prather
Johns Hopkins University Applied Physics Laboratory
443-778-8769
Intelligence has much less practical application than you'd think -
Dilbert/Scott Adams
-Original Message-
From: Richard Rhodes [mailto:[EMAIL PROTECTED]
Sent: Tuesday
to any particular client system . . . .maybe there is . .
. .
Thanks!
Richard Rhodes
-
The information contained in this message is intended only for the personal and
confidential use of the recipient(s) named above. If the reader of this message
Please don't throw the concept out. Like all tools it has it's place.
For example, we are thinking about reorg'ing one of our TSM databases.
Why?
1) I ran a test reorg of one of our TSM databases on a test system. The
db was 80gb
in size with 72gb used. It shrunk to 40gb used.
As discussed
Our 3590H's are dual attached to our TSM server via separate FC switches.
It does work as described below. I checked the atape manual . . . it
describes exactly what we've implemented.
Rick
Steve Roder
[EMAIL PROTECTED]To: [EMAIL
This function is supported only on 3590 and 3592 Fibre Channel tape
drives that are native attached. This function is not supported for
devices that are attached through an IBM San Data Gateway.
I saw this comment in the Atape manual also . . . . it explains the
confusion. The Data Gateway
Sorry, LTO drives are not upgradeable.
Gill, Geoffrey
L. To: [EMAIL PROTECTED]
GEOFFREY.L.GILL@cc:
SAIC.COMSubject: LTO drives
Sent
, performance is very
good (40 mb/s, compresion on drive).
viliam varga
But, the LTO2 drives can read media that was written by LTO1.
-Original Message-
From: Richard Rhodes [mailto:[EMAIL PROTECTED]
Sent: Thursday, November 20, 2003 1:15 PM
To: [EMAIL PROTECTED]
Subject: Re: LTO drives
I'll show my ignorance, but I didn't think TSM supported the Centera.
I thought access to the Centerra was via a specific API EMC has written
for it. To me, this implies that it would require a special program to
interface
from TSM to the Centerra via the TSM api client. At one time EMC told me
I am having a problem with expiration taking all night to complete! Has
anybody seen this? Any suggestions?
We used to run expiration during our daytime batch schedule. As our
database grew this became a problem. When we tried to run other processes
during expiration we ran into log pin
We used to run TSM on a old 12 processor S70. All 12 processors would be
used by dsmserv.
Rick
David E Ehresman
[EMAIL PROTECTED]To: [EMAIL PROTECTED]
LLE.EDU cc:
Sent by:
We recently had a presentation from EMC. During this presentation
they discussed their new DL700
virtual tape library. It got people talking about a long
term strategy of moving to a all disk based backup system. So we
started thinking of the pros and cons of how to go about setting up TSM
for
Yes . . . exactly.
From reading about the EMC DL700, it truly emuilates tape libraries, tape
drives and tape cartridges. Actually, it can concurrently emulate multiple
libraries (of the same kind of different kinds), different kinds of tape
drives (lto, dlt, etc), with emulated tape cartridges.
1 - 100 of 462 matches
Mail list logo
