/David Mc
London, UK

Sent from my iPhone

On 1 Aug 2009, at 15:37, Flavio Junior <billpp AT GMAIL DOT COM> wrote:

Hi Steve, thanks for answering...

Yeah, the destination is tape, i see on StorageAgent console the
connection to server and opening tape, during the backup I see the
bytes increasing on "Backup by LANFree: " (but, this value is ALWAYS
lower than the value of normal backup... i don't know if this is
normal).
VALIDATE LANFREE node policyset shows me that the node is capable to
LANFree backups.

During the backup (using webclient interface) I can see two speeds,
well.. A screenshot of backup report is at link:
http://img18.imageshack.us/img18/9278/backupz.jpg

The screenshot is in portuguese but I think is easy to you guess what
is each value...
Time: 5:45 Hours
Size: 181 Gb
No compression

Rede == Network
Agregada == Aggregate, combination... (not sure how TSM show it)

Ok, this is what I have... If need more info just let me know.

Thanks again.

--

Flávio do Carmo Júnior aka waKKu
Florianópolis/SC - Brazil

On Sat, Aug 1, 2009 at 3:51 AM, Steven Harris<steve AT stevenharris DOT info> wrote:

Flavio

Is the destination of your backup pool tape? Have you confirmed with
VALIDATE LANFREE on the server

Are you seeing a "proxied by" message in the client log to indicate that the

storage agent is in use?

Is the *network* path configured as 1Gb - I'm suspecting you have a LAN

backup and that the lan path has issues.

HTH

Regards

Steve

Steven Harris.
TSM Admin, looking for work, Sydney Australia



Flavio Junior wrote:

Hi folks,

I'm here, again, asking for help :)
More I read, more doubts I have.

I'm now implementing a TSM For SAN setup, to performance comparison
with my currently LAN backup.

I'll describe my scenario below, any doubt's feel free to ask me:
- 2 Production nodes using RHEL 5.3 connected to SAN
- 1 IBM DS4700 storage with 14 FC disks (13 raid5 + 1 hot-spare)
- Each node have a emulex dual-port HBA
- 2 Brocade TotalStorage fiber switches, with coherent zonings
- Library is a IBM TS3100 LTO4 SAN, with only one drive

Ok, i'm using TSM with LAN backups for a week, the transfer rate comes

among 60~80GB per hour.
The tape has a nominal write speed of 120MB/s that says me 430GB/h,
ok.. this is a *nominal* speed, I was expecting something near
300GB/h, good enough for me.

For these tests I've configured TSM Server on node1 and TSM Client on

node2. Each node has 6 1Gbps NIC's, 4 to public network 2 for
cluster-heartbeat + backups.
With this setup I've got, as said above, 60~80GB/h.

So, I decide to setup TSM for SAN.. Download a lot of docs/books and
start reading/doing.
I end up with:

- Fabric zoning changes, isolating a HBA port on each dual-port cards for

nodes
- Installed StorageAgent on node2
- Installed TSM Client on node2
- - Configured the client to connect on storageagent
- Redefine all my TSM Server setup
- - Make Library as shared=yes, configure storage agent as a server,
configure path, configure datawritepath=lanfree and so on...

Ok, time to backup.

And, for my surprise i got only ~500MB per minute.. I thought it very

strange.. I've no idea what is the problem, I've tried with

compression and without, DATAREADPATH=LAN and SAN, VirtualMountPoints

or Physical ...

Does anybody have an idea the reason of that bad transfer rate?? The
servers are Samba Servers, with all kind of file and all size

As I said before, I'm really new with TSM so is really possible that
I've misconfigured something :)

Anyway, thanks in advance, and any help will be appreciated.

--

Flávio do Carmo Júnior aka waKKu
Florianópolis/SC - Brazil

--- --- ------------------------------------------------------------------

No virus found in this incoming message.
Checked by AVG - www.avg.com Version: 8.5.392 / Virus Database:
270.13.38/2274 - Release Date: 07/31/09 05:58:00