Hi Tim!
I don't know any more than you do. I have contacted my IBM sales because I
wanted to issue an enhancement request for a disk-only environment and he
did send me similar statements...
I was hoping to see enhancements to the deviceclass=disk, but that doesn't
seem to be what IBM is aiming for.
Just think about a world with all of your backup data in a cheap SATA box on
a TSM diskpool. No more reclaiming, no more multiple backup stgpool, instant
restores...
Kindest regards,
Eric van Loon
KLM Royal Dutch Airlines
-----Original Message-----
From: Rushforth, Tim [mailto:TRushforth AT WINNIPEG DOT CA]
Sent: Friday, June 18, 2004 18:28
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: disk-only enhancements (Was Tier'ed library)
Thanks Eric. Do you have any information other than the following?
Potential enhancements for sequential-access disk pools
- Allow storage pools to span multiple file systems
- Support parallel migration from sequential-access pools
- Minimize fragmentation of file volumes to improve performance
- Exploit direct I/O, where applicable
- Add space trigger for automatic allocation of storage pool space
- Remove mount point limitations
- Candidate for 4Q2004
Will all of these be included in 5.3?
Thanks,
Tim
-----Original Message-----
From: Loon, E.J. van - SPLXM [mailto:Eric-van.Loon AT KLM DOT COM]
Sent: June 18, 2004 4:09 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Tier'ed library
> Tivoli may be looking at this for futures?
As a matter of fact they will. Version 5.3 (expected 4th. quarter) will
address several disk-only implementation enhancements.
Kindest regards,
Eric van Loon
KLM Royal Dutch Airlines
-----Original Message-----
From: Rushforth, Tim [mailto:TRushforth AT WINNIPEG DOT CA]
Sent: Thursday, June 17, 2004 17:05
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Tier'ed library
Using sequential-access File volumes with TSM seems to result in a lot of
file level fragmentation. We are doing a mini-pilot with 25GB File volumes
for the storage pool volumes for some nodes. These volumes end up very
fragmented (some of the files are in 9000 fragments).
This could have performance implications.
Tivoli may be looking at this for futures?
A VTL may address this.
I did a quick restore test of a node as follows:
36 GB restored
219,170 objects
On fragmented File Volumes:
Time 34.6 minutes
17.7 MB/sec
After defragmenting the file Volumes:
Time 21.9 minutes
27.9 MB/sec
It was not a controlled test as it was run on a production server so there
could have been other things affecting the two tests.
TSM Server 5.2.2.4 on Windows 2003
TSM Client 5.2.2.9 on Windows 2003
Tim Rushforth
City of Winnipeg
-----Original Message-----
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