Re: Backup to multiple tape simultaneously
- Original Message - From: William SO Ng [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 6:41 AM Subject: Backup to multiple tape simultaneously Based on my understanding, TSM does not support simultaneously write to multiple tape, i.e. I want to write to multiple tapes during backup. If I want to work around this limitation, can I do the followings : Install another instance on the TSM server. Configure the new TSM server to backup the same set of files. Start the backup at once for this two TSM servers. So one TSM server will backup to one drive, the other will backup the next drive. Wouldn't just do setting MAXRESOURCEUTIL on the client to a higher value accomplish the same ? Correct me if I'm wrong. Greetings Sascha
Re: Backup to multiple tape simultaneously
TSM doesn't support multiple reads/writes from/to the same tape. We use resourceutil en max mountpoint 1. The client uses multiple back-up sessies to multiple tapes. It works fine. -Oorspronkelijk bericht- Van: Sascha Askani [mailto:[EMAIL PROTECTED]] Verzonden: woensdag 13 maart 2002 12:02 Aan: [EMAIL PROTECTED] Onderwerp: Re: Backup to multiple tape simultaneously - Original Message - From: William SO Ng [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 6:41 AM Subject: Backup to multiple tape simultaneously Based on my understanding, TSM does not support simultaneously write to multiple tape, i.e. I want to write to multiple tapes during backup. If I want to work around this limitation, can I do the followings : Install another instance on the TSM server. Configure the new TSM server to backup the same set of files. Start the backup at once for this two TSM servers. So one TSM server will backup to one drive, the other will backup the next drive. Wouldn't just do setting MAXRESOURCEUTIL on the client to a higher value accomplish the same ? Correct me if I'm wrong. Greetings Sascha
Re: Backup to multiple tape simultaneously
William, I've configured multiple clients, each with its own DSM.OPT and unique NODENAME and separate INCLUDE_EXCLUDE files so each node backed-up a unique portion of the file systems. Steffan - Original Message - From: Sascha Askani [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 3:01 AM Subject: Re: Backup to multiple tape simultaneously - Original Message - From: William SO Ng [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 6:41 AM Subject: Backup to multiple tape simultaneously Based on my understanding, TSM does not support simultaneously write to multiple tape, i.e. I want to write to multiple tapes during backup. If I want to work around this limitation, can I do the followings : Install another instance on the TSM server. Configure the new TSM server to backup the same set of files. Start the backup at once for this two TSM servers. So one TSM server will backup to one drive, the other will backup the next drive. Wouldn't just do setting MAXRESOURCEUTIL on the client to a higher value accomplish the same ? Correct me if I'm wrong. Greetings Sascha
Re: Backup to multiple tape simultaneously
Only problem there is that your large restore will be single threaded (until 5.1 -- maybe). Steffan - Original Message - From: Bill Boyer [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 9:33 AM Subject: Re: Backup to multiple tape simultaneously Sounds like a mangement nightmare! (no offense intended) Why not just specify a RESOURCEUTILIZATION 2 in the DSM.OPT file and update the nodes' MAXNUMMP value accordingly to get multiple backup streams. The way I understand it and have seen it on Windows boxes, TSM will start a backup session for each drive..resource depending. Bill -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of ARhoads Sent: Wednesday, March 13, 2002 10:21 AM To: [EMAIL PROTECTED] Subject: Re: Backup to multiple tape simultaneously William, I've configured multiple clients, each with its own DSM.OPT and unique NODENAME and separate INCLUDE_EXCLUDE files so each node backed-up a unique portion of the file systems. Steffan - Original Message - From: Sascha Askani [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 3:01 AM Subject: Re: Backup to multiple tape simultaneously - Original Message - From: William SO Ng [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 6:41 AM Subject: Backup to multiple tape simultaneously Based on my understanding, TSM does not support simultaneously write to multiple tape, i.e. I want to write to multiple tapes during backup. If I want to work around this limitation, can I do the followings : Install another instance on the TSM server. Configure the new TSM server to backup the same set of files. Start the backup at once for this two TSM servers. So one TSM server will backup to one drive, the other will backup the next drive. Wouldn't just do setting MAXRESOURCEUTIL on the client to a higher value accomplish the same ? Correct me if I'm wrong. Greetings Sascha
Re: Backup to multiple tape simultaneously
Although it is very easy to start a dsmc restore filesystem for each filesystem and do parallel restores today. Bill Smoldt STORServer, Inc. -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of ARhoads Sent: Wednesday, March 13, 2002 10:57 AM To: [EMAIL PROTECTED] Subject: Re: Backup to multiple tape simultaneously Only problem there is that your large restore will be single threaded (until 5.1 -- maybe). Steffan - Original Message - From: Bill Boyer [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 9:33 AM Subject: Re: Backup to multiple tape simultaneously Sounds like a mangement nightmare! (no offense intended) Why not just specify a RESOURCEUTILIZATION 2 in the DSM.OPT file and update the nodes' MAXNUMMP value accordingly to get multiple backup streams. The way I understand it and have seen it on Windows boxes, TSM will start a backup session for each drive..resource depending. Bill -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of ARhoads Sent: Wednesday, March 13, 2002 10:21 AM To: [EMAIL PROTECTED] Subject: Re: Backup to multiple tape simultaneously William, I've configured multiple clients, each with its own DSM.OPT and unique NODENAME and separate INCLUDE_EXCLUDE files so each node backed-up a unique portion of the file systems. Steffan - Original Message - From: Sascha Askani [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 3:01 AM Subject: Re: Backup to multiple tape simultaneously - Original Message - From: William SO Ng [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 6:41 AM Subject: Backup to multiple tape simultaneously Based on my understanding, TSM does not support simultaneously write to multiple tape, i.e. I want to write to multiple tapes during backup. If I want to work around this limitation, can I do the followings : Install another instance on the TSM server. Configure the new TSM server to backup the same set of files. Start the backup at once for this two TSM servers. So one TSM server will backup to one drive, the other will backup the next drive. Wouldn't just do setting MAXRESOURCEUTIL on the client to a higher value accomplish the same ? Correct me if I'm wrong. Greetings Sascha
Re: Backup to multiple tape simultaneously
Not necessarily. Just start multiple restore sessions. Do a DSMC RESTORE command for each drive. You may run into tape contention if files from different filespaces are on the same tape. You could also co-locate based on filespace to reduce the tape contention. How often do you do these kinds of large restores? Is it worth the management of mutliple node-names and include-excludes for each server based on how often you restore? If there are requirements for this type of speed on restore, maybe directing those servers to a separate storage pool that is co-located? I'm not trying to pick apart your backup strategy, just trying to understand it. There may come a time where I have a client with these same needs and the information in this thread would come in handy. Bill -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of ARhoads Sent: Wednesday, March 13, 2002 12:57 PM To: [EMAIL PROTECTED] Subject: Re: Backup to multiple tape simultaneously Only problem there is that your large restore will be single threaded (until 5.1 -- maybe). Steffan - Original Message - From: Bill Boyer [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 9:33 AM Subject: Re: Backup to multiple tape simultaneously Sounds like a mangement nightmare! (no offense intended) Why not just specify a RESOURCEUTILIZATION 2 in the DSM.OPT file and update the nodes' MAXNUMMP value accordingly to get multiple backup streams. The way I understand it and have seen it on Windows boxes, TSM will start a backup session for each drive..resource depending. Bill -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of ARhoads Sent: Wednesday, March 13, 2002 10:21 AM To: [EMAIL PROTECTED] Subject: Re: Backup to multiple tape simultaneously William, I've configured multiple clients, each with its own DSM.OPT and unique NODENAME and separate INCLUDE_EXCLUDE files so each node backed-up a unique portion of the file systems. Steffan - Original Message - From: Sascha Askani [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 3:01 AM Subject: Re: Backup to multiple tape simultaneously - Original Message - From: William SO Ng [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 6:41 AM Subject: Backup to multiple tape simultaneously Based on my understanding, TSM does not support simultaneously write to multiple tape, i.e. I want to write to multiple tapes during backup. If I want to work around this limitation, can I do the followings : Install another instance on the TSM server. Configure the new TSM server to backup the same set of files. Start the backup at once for this two TSM servers. So one TSM server will backup to one drive, the other will backup the next drive. Wouldn't just do setting MAXRESOURCEUTIL on the client to a higher value accomplish the same ? Correct me if I'm wrong. Greetings Sascha
Re: Backup to multiple tape simultaneously
except for all of the contention for tapes... - Original Message - From: Bill Smoldt [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 10:08 AM Subject: Re: Backup to multiple tape simultaneously Although it is very easy to start a dsmc restore filesystem for each filesystem and do parallel restores today. Bill Smoldt STORServer, Inc. -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of ARhoads Sent: Wednesday, March 13, 2002 10:57 AM To: [EMAIL PROTECTED] Subject: Re: Backup to multiple tape simultaneously Only problem there is that your large restore will be single threaded (until 5.1 -- maybe). Steffan - Original Message - From: Bill Boyer [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 9:33 AM Subject: Re: Backup to multiple tape simultaneously Sounds like a mangement nightmare! (no offense intended) Why not just specify a RESOURCEUTILIZATION 2 in the DSM.OPT file and update the nodes' MAXNUMMP value accordingly to get multiple backup streams. The way I understand it and have seen it on Windows boxes, TSM will start a backup session for each drive..resource depending. Bill -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of ARhoads Sent: Wednesday, March 13, 2002 10:21 AM To: [EMAIL PROTECTED] Subject: Re: Backup to multiple tape simultaneously William, I've configured multiple clients, each with its own DSM.OPT and unique NODENAME and separate INCLUDE_EXCLUDE files so each node backed-up a unique portion of the file systems. Steffan - Original Message - From: Sascha Askani [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 3:01 AM Subject: Re: Backup to multiple tape simultaneously - Original Message - From: William SO Ng [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 6:41 AM Subject: Backup to multiple tape simultaneously Based on my understanding, TSM does not support simultaneously write to multiple tape, i.e. I want to write to multiple tapes during backup. If I want to work around this limitation, can I do the followings : Install another instance on the TSM server. Configure the new TSM server to backup the same set of files. Start the backup at once for this two TSM servers. So one TSM server will backup to one drive, the other will backup the next drive. Wouldn't just do setting MAXRESOURCEUTIL on the client to a higher value accomplish the same ? Correct me if I'm wrong. Greetings Sascha
Re: Backup to multiple tape simultaneously
= On Wed, 13 Mar 2002 11:33:03 -0800, ARhoads [EMAIL PROTECTED] said: except for all of the contention for tapes... We're colocating by filespace in those situations where we'd care about that. - Allen S. Rout
Re: Backup to multiple tape simultaneously
dsmadmc -id=admin -pa=admin upd stg POOLNAME collocate=filespace On Wed, 13 Mar 2002, ARhoads wrote: except for all of the contention for tapes... - Original Message - From: Bill Smoldt [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, March 13, 2002 10:08 AM Subject: Re: Backup to multiple tape simultaneously Although it is very easy to start a dsmc restore filesystem for each filesystem and do parallel restores today. Bill Smoldt STORServer, Inc.
