We saw a problem with this at our last disaster recovery exercise. The switch ports were set to 100/full and the NIC card (win2k) was set to 100/full, but the restore thru-put suck'd. After the network people looked into it, turns out the switch ports were reporting 100/half. When they updated the NIC drivers to the lastest release from the vender, the switch was then reporting 100/full. I've seen NIC drivers cause thru-put issues on numerous occasions. You should veriy that the drivers are the latest, or the latest GOOD version.
The network people said that even though you set the card and switch port to 100/full, doesn't mean you'll get it. There is some handshaking that goes on between the card and port and if that doesn't happen, the switch will downgrade and try again. Kinda like a modem connecting. It will drop speed and protocol until a good transmission is obtained. Bill Boyer DSS, Inc. -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of Regelin Michael (CHA) Sent: Friday, April 26, 2002 5:58 AM To: [EMAIL PROTECTED] Subject: Re: TDP performance!!!!! Hi, A typical behavior of your problem, is that when installing a swtich or a router, sometime there is a collision between the full-duplex and halp-duplex configurtion. Make sure that on your switch (port level) and on your server (Nic level) your have the same parameters (of course full-duplex is best if you have 100Mb/s).. Mike > ____________________________________________________________________________ _______ > Michael REGELIN > Ingenieur Informatique - O.S.O. > Groupware & Messagerie > Centre des Technologies de l'Information (CTI) > Route des Acacias 82 > CP149 - 1211 Geneve 8 > Tel. + 41 22 3274322 - Fax + 41 22 3275499 > Mailto:[EMAIL PROTECTED] > http://intraCTI.etat-ge.ch/services_complementaires/messagerie.html > __________________________________________________________ > -----Message d'origine----- De : Zlatko Krastev [mailto:[EMAIL PROTECTED]] Envoye : vendredi, 26. avril 2002 11:49 A : [EMAIL PROTECTED] Objet : Re: TDP performance!!!!! Why are you restarting the AIX box? This is Windows behavior - works after restart. Did you restarted Windows too? Have you tested network throughput? Try ftp-ing from Windows to AIX (and back). What is the transfer rate for file larger than 100-200 MB? Have you tested B/A client throughput? Try backup&restore of ordinary file 0.5-1GB. You can make new local replica of one big Domino DB outside <drive>:\lotus\notes\data directory and backup it using GUI. Is backup going to disk or direct to tape? Is migration starting during backup to disk? What is Windows box processor/memory utilization during backup? Is memory overcommited and paging extensively used? Is there other high-volume activity on the same partition/disk? Answers to some of those questions might help you to pinpoint the problem. If still there is no success report to the list again. Zlatko Krastev IT Consultant Please respond to "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] cc: Subject: TDP performance!!!!! Hi everybody, I'm having BIG performance problems using TDP for Lotus Domino... I am backing up the mail databases using TDP for Lotus Domino. My configuration is the following: -TSM Server 4.2.1 on a AIX 4.3.3 -TSM client 4.2.1 and TDP for Lotus Domino 1.1 on the mail server that is a WIN2000 The company wants to perform a full backup of the mail database directly on a tape every day. The total size is of 8GB approximately. First time I did the back up, it took 1 hour to complete. But since then, I'm getting a throughput rate as low as 50 Kb/sec !!! which means that it would need 48 hours at least to complete the backup. I verified both the AIX and WIN servers speed connections and both are of 100 Mb/sec. I then tried a backup on the tape using the AIX 'tar' command and got a very good rate. Finally, I restarted the AIX but I'm still getting this very low rate ... Can you offer me any advice? Thx a lot Sandra __________________________________________________ Do You Yahoo!? Yahoo! Games - play chess, backgammon, pool and more http://games.yahoo.com/
