Re: migration and backup
I stop schedule backup and manual backup. While TSM client implement backup, it stop tranferring file immediately. I query TSM server and see : - q volume : Disk pool : Pct Ultil 80% Volume Status : On-line - q session : Sess state : MediaW -q process : migration process is still running. later ten minutes, I check again and see Session state : MediaW I use LTO GEN2 and its read/write speed is 10-20 MB/s native and 20-40 MB/s compressed as producer said. The speed is more than LAN speed. I think if I backup directly to tape with this speed it is suitable. But I only see network tranfer rate is very low (about 1-2 MB/s). Is there method to improve peformance of TSM server ? - Original Message - From: Tab Trepagnier [EMAIL PROTECTED] To: ADSM-L@VM.MARIST.EDU Sent: Tuesday, March 08, 2005 7:30 AM Subject: Re: migration and backup Iain, I run small disk pools also, and I also had HI=0 for a while. That's not a good idea because you prevent TSM from combining data into a internal package prior to migration. We saw files as small as 1 KB migrating. That forces your TSM server to track a HUGE number of objects. Now, on our smallest disk pools (5 to 6 GB) we set HI=10 so that migration doesn't begin until 500-600 MB of data has been committed. Much better performance. We also set a 1 GB max size so that if a client sends a very large file - say 3 GB - it goes straight to tape. Tab Trepagnier TSM Administrator Laitram, L.L.C. Iain Barnetson [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU 03/04/2005 04:24 AM Please respond to ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU To ADSM-L@VM.MARIST.EDU cc Subject Re: migration and backup I'm in a similar situation where my primary stg diskpool is not big enough to contain a nights backups. I have the migration set to hi=0 lo=0. This means it's constantly migrating but I've 6 dedicated lto2 tape drives so isn't an issue for me. Regards, Iain -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of John Naylor Sent: 04 March 2005 10:17 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] migration and backup Your disk pool is way too small. It should be large enough to hold one night's backups If you can't do that, set your hi mig threshold to a low value say 10 or even lower At 80% your backup fills up the remaining 20% of your pool faster than migration can empty it. nghiatd [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@vm.marist.edu 04/03/2005 10:15 Please respond to ADSM: Dist Stor Manager ADSM-L@vm.marist.edu To ADSM-L@vm.marist.edu cc Subject migration and backup Hi all, I setup TSM ver 5.2 client on Win 2K that has more than 200 GB data, But TSM server machine only 20 GB hard disk. So I configure Backuppool --- Diskpool ---Tapepool. Diskpool : 18 GB High Migration Threshold : 80 % Low Migration Threshold : 0 %. People said when migration process is started, backup process is still continuous. But I view log file ; 02/03/2005 06:22:26 Normal File-- 719,648,279 \\BILL2_200411_2.tar * Unsuccessful* 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 \\BILL2_200411_2.tar [Sent] 02/03/2005 06:55:37 ANS1809W Session is lost; initializing session reopen procedure. 02/03/2005 06:55:53 ... successful 02/03/2005 06:56:16 Normal File-- 726,513,573 \\BILL2_200411_3.tar [Sent] So backup was stopped when migration process is started. Does anyone have idea to backup process still continue ? Nghiatd ** The information in this E-Mail is confidential and may be legally privileged. It may not represent the views of Scottish and Southern Energy Group. It is intended solely for the addressees. Access to this E-Mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any unauthorised recipient should advise the sender immediately of the error in transmission. Unless specifically stated otherwise, this email (or any attachments to it) is not an offer capable of acceptance or acceptance of an offer and it does not form part of a binding contractual agreement. Scottish Hydro-Electric, Southern Electric, SWALEC, S+S and SSE Power Distribution are trading names of the Scottish and Southern Energy Group. **
Re: migration and backup
Iain, I run small disk pools also, and I also had HI=0 for a while. That's not a good idea because you prevent TSM from combining data into a internal package prior to migration. We saw files as small as 1 KB migrating. That forces your TSM server to track a HUGE number of objects. Now, on our smallest disk pools (5 to 6 GB) we set HI=10 so that migration doesn't begin until 500-600 MB of data has been committed. Much better performance. We also set a 1 GB max size so that if a client sends a very large file - say 3 GB - it goes straight to tape. Tab Trepagnier TSM Administrator Laitram, L.L.C. Iain Barnetson [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU 03/04/2005 04:24 AM Please respond to ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU To ADSM-L@VM.MARIST.EDU cc Subject Re: migration and backup I'm in a similar situation where my primary stg diskpool is not big enough to contain a nights backups. I have the migration set to hi=0 lo=0. This means it's constantly migrating but I've 6 dedicated lto2 tape drives so isn't an issue for me. Regards, Iain -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of John Naylor Sent: 04 March 2005 10:17 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] migration and backup Your disk pool is way too small. It should be large enough to hold one night's backups If you can't do that, set your hi mig threshold to a low value say 10 or even lower At 80% your backup fills up the remaining 20% of your pool faster than migration can empty it. nghiatd [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@vm.marist.edu 04/03/2005 10:15 Please respond to ADSM: Dist Stor Manager ADSM-L@vm.marist.edu To ADSM-L@vm.marist.edu cc Subject migration and backup Hi all, I setup TSM ver 5.2 client on Win 2K that has more than 200 GB data, But TSM server machine only 20 GB hard disk. So I configure Backuppool --- Diskpool ---Tapepool. Diskpool : 18 GB High Migration Threshold : 80 % Low Migration Threshold : 0 %. People said when migration process is started, backup process is still continuous. But I view log file ; 02/03/2005 06:22:26 Normal File-- 719,648,279 \\BILL2_200411_2.tar * Unsuccessful* 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 \\BILL2_200411_2.tar [Sent] 02/03/2005 06:55:37 ANS1809W Session is lost; initializing session reopen procedure. 02/03/2005 06:55:53 ... successful 02/03/2005 06:56:16 Normal File-- 726,513,573 \\BILL2_200411_3.tar [Sent] So backup was stopped when migration process is started. Does anyone have idea to backup process still continue ? Nghiatd ** The information in this E-Mail is confidential and may be legally privileged. It may not represent the views of Scottish and Southern Energy Group. It is intended solely for the addressees. Access to this E-Mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any unauthorised recipient should advise the sender immediately of the error in transmission. Unless specifically stated otherwise, this email (or any attachments to it) is not an offer capable of acceptance or acceptance of an offer and it does not form part of a binding contractual agreement. Scottish Hydro-Electric, Southern Electric, SWALEC, S+S and SSE Power Distribution are trading names of the Scottish and Southern Energy Group. **
Re: migration and backup
Your disk pool is way too small. It should be large enough to hold one night's backups If you can't do that, set your hi mig threshold to a low value say 10 or even lower At 80% your backup fills up the remaining 20% of your pool faster than migration can empty it. nghiatd [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@vm.marist.edu 04/03/2005 10:15 Please respond to ADSM: Dist Stor Manager ADSM-L@vm.marist.edu To ADSM-L@vm.marist.edu cc Subject migration and backup Hi all, I setup TSM ver 5.2 client on Win 2K that has more than 200 GB data, But TSM server machine only 20 GB hard disk. So I configure Backuppool --- Diskpool ---Tapepool. Diskpool : 18 GB High Migration Threshold : 80 % Low Migration Threshold : 0 %. People said when migration process is started, backup process is still continuous. But I view log file ; 02/03/2005 06:22:26 Normal File-- 719,648,279 \\BILL2_200411_2.tar * Unsuccessful* 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 \\BILL2_200411_2.tar [Sent] 02/03/2005 06:55:37 ANS1809W Session is lost; initializing session reopen procedure. 02/03/2005 06:55:53 ... successful 02/03/2005 06:56:16 Normal File-- 726,513,573 \\BILL2_200411_3.tar [Sent] So backup was stopped when migration process is started. Does anyone have idea to backup process still continue ? Nghiatd ** The information in this E-Mail is confidential and may be legally privileged. It may not represent the views of Scottish and Southern Energy Group. It is intended solely for the addressees. Access to this E-Mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any unauthorised recipient should advise the sender immediately of the error in transmission. Unless specifically stated otherwise, this email (or any attachments to it) is not an offer capable of acceptance or acceptance of an offer and it does not form part of a binding contractual agreement. Scottish Hydro-Electric, Southern Electric, SWALEC, S+S and SSE Power Distribution are trading names of the Scottish and Southern Energy Group. **
Re: migration and backup
Nghiatd, Have your settings before during backup:- High Migration Threshold : 80 % Low Migration Threshold : 25 %. Later , after backups are complete :- High Migration Threshold : 0 % Low Migration Threshold : 0 %. to allow migration to tape to take place. Bill nghiatd [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@VM.MARIST.EDU 04/03/2005 10:15 Please respond to ADSM: Dist Stor Manager To: ADSM-L@VM.MARIST.EDU cc: Subject:[ADSM-L] migration and backup Hi all, I setup TSM ver 5.2 client on Win 2K that has more than 200 GB data, But TSM server machine only 20 GB hard disk. So I configure Backuppool --- Diskpool ---Tapepool. Diskpool : 18 GB High Migration Threshold : 80 % Low Migration Threshold : 0 %. People said when migration process is started, backup process is still continuous. But I view log file ; 02/03/2005 06:22:26 Normal File-- 719,648,279 \\BILL2_200411_2.tar * Unsuccessful* 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 \\BILL2_200411_2.tar [Sent] 02/03/2005 06:55:37 ANS1809W Session is lost; initializing session reopen procedure. 02/03/2005 06:55:53 ... successful 02/03/2005 06:56:16 Normal File-- 726,513,573 \\BILL2_200411_3.tar [Sent] So backup was stopped when migration process is started. Does anyone have idea to backup process still continue ? Nghiatd
Re: migration and backup
I'm in a similar situation where my primary stg diskpool is not big enough to contain a nights backups. I have the migration set to hi=0 lo=0. This means it's constantly migrating but I've 6 dedicated lto2 tape drives so isn't an issue for me. Regards, Iain -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of John Naylor Sent: 04 March 2005 10:17 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] migration and backup Your disk pool is way too small. It should be large enough to hold one night's backups If you can't do that, set your hi mig threshold to a low value say 10 or even lower At 80% your backup fills up the remaining 20% of your pool faster than migration can empty it. nghiatd [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@vm.marist.edu 04/03/2005 10:15 Please respond to ADSM: Dist Stor Manager ADSM-L@vm.marist.edu To ADSM-L@vm.marist.edu cc Subject migration and backup Hi all, I setup TSM ver 5.2 client on Win 2K that has more than 200 GB data, But TSM server machine only 20 GB hard disk. So I configure Backuppool --- Diskpool ---Tapepool. Diskpool : 18 GB High Migration Threshold : 80 % Low Migration Threshold : 0 %. People said when migration process is started, backup process is still continuous. But I view log file ; 02/03/2005 06:22:26 Normal File-- 719,648,279 \\BILL2_200411_2.tar * Unsuccessful* 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 \\BILL2_200411_2.tar [Sent] 02/03/2005 06:55:37 ANS1809W Session is lost; initializing session reopen procedure. 02/03/2005 06:55:53 ... successful 02/03/2005 06:56:16 Normal File-- 726,513,573 \\BILL2_200411_3.tar [Sent] So backup was stopped when migration process is started. Does anyone have idea to backup process still continue ? Nghiatd ** The information in this E-Mail is confidential and may be legally privileged. It may not represent the views of Scottish and Southern Energy Group. It is intended solely for the addressees. Access to this E-Mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any unauthorised recipient should advise the sender immediately of the error in transmission. Unless specifically stated otherwise, this email (or any attachments to it) is not an offer capable of acceptance or acceptance of an offer and it does not form part of a binding contractual agreement. Scottish Hydro-Electric, Southern Electric, SWALEC, S+S and SSE Power Distribution are trading names of the Scottish and Southern Energy Group. **
Re: migration and backup
I use LTO Gen 2. Its read/write speed is 15-20 MB/s more than network speed (100Mbps). So migration is faster than backup - Original Message - From: John Naylor [EMAIL PROTECTED] To: ADSM-L@VM.MARIST.EDU Sent: Friday, March 04, 2005 5:16 PM Subject: Re: migration and backup Your disk pool is way too small. It should be large enough to hold one night's backups If you can't do that, set your hi mig threshold to a low value say 10 or even lower At 80% your backup fills up the remaining 20% of your pool faster than migration can empty it. nghiatd [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@vm.marist.edu 04/03/2005 10:15 Please respond to ADSM: Dist Stor Manager ADSM-L@vm.marist.edu To ADSM-L@vm.marist.edu cc Subject migration and backup Hi all, I setup TSM ver 5.2 client on Win 2K that has more than 200 GB data, But TSM server machine only 20 GB hard disk. So I configure Backuppool --- Diskpool ---Tapepool. Diskpool : 18 GB High Migration Threshold : 80 % Low Migration Threshold : 0 %. People said when migration process is started, backup process is still continuous. But I view log file ; 02/03/2005 06:22:26 Normal File-- 719,648,279 \\BILL2_200411_2.tar * Unsuccessful* 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 \\BILL2_200411_2.tar [Sent] 02/03/2005 06:55:37 ANS1809W Session is lost; initializing session reopen procedure. 02/03/2005 06:55:53 ... successful 02/03/2005 06:56:16 Normal File-- 726,513,573 \\BILL2_200411_3.tar [Sent] So backup was stopped when migration process is started. Does anyone have idea to backup process still continue ? Nghiatd ** The information in this E-Mail is confidential and may be legally privileged. It may not represent the views of Scottish and Southern Energy Group. It is intended solely for the addressees. Access to this E-Mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any unauthorised recipient should advise the sender immediately of the error in transmission. Unless specifically stated otherwise, this email (or any attachments to it) is not an offer capable of acceptance or acceptance of an offer and it does not form part of a binding contractual agreement. Scottish Hydro-Electric, Southern Electric, SWALEC, S+S and SSE Power Distribution are trading names of the Scottish and Southern Energy Group. **
Re: migration and backup
I have 2 drive LTO Gen 2. I also try backup directly to tape, but it is very slow - Original Message - From: Iain Barnetson [EMAIL PROTECTED] To: ADSM-L@VM.MARIST.EDU Sent: Friday, March 04, 2005 5:24 PM Subject: Re: migration and backup I'm in a similar situation where my primary stg diskpool is not big enough to contain a nights backups. I have the migration set to hi=0 lo=0. This means it's constantly migrating but I've 6 dedicated lto2 tape drives so isn't an issue for me. Regards, Iain -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of John Naylor Sent: 04 March 2005 10:17 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] migration and backup Your disk pool is way too small. It should be large enough to hold one night's backups If you can't do that, set your hi mig threshold to a low value say 10 or even lower At 80% your backup fills up the remaining 20% of your pool faster than migration can empty it. nghiatd [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@vm.marist.edu 04/03/2005 10:15 Please respond to ADSM: Dist Stor Manager ADSM-L@vm.marist.edu To ADSM-L@vm.marist.edu cc Subject migration and backup Hi all, I setup TSM ver 5.2 client on Win 2K that has more than 200 GB data, But TSM server machine only 20 GB hard disk. So I configure Backuppool --- Diskpool ---Tapepool. Diskpool : 18 GB High Migration Threshold : 80 % Low Migration Threshold : 0 %. People said when migration process is started, backup process is still continuous. But I view log file ; 02/03/2005 06:22:26 Normal File-- 719,648,279 \\BILL2_200411_2.tar * Unsuccessful* 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 \\BILL2_200411_2.tar [Sent] 02/03/2005 06:55:37 ANS1809W Session is lost; initializing session reopen procedure. 02/03/2005 06:55:53 ... successful 02/03/2005 06:56:16 Normal File-- 726,513,573 \\BILL2_200411_3.tar [Sent] So backup was stopped when migration process is started. Does anyone have idea to backup process still continue ? Nghiatd ** The information in this E-Mail is confidential and may be legally privileged. It may not represent the views of Scottish and Southern Energy Group. It is intended solely for the addressees. Access to this E-Mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any unauthorised recipient should advise the sender immediately of the error in transmission. Unless specifically stated otherwise, this email (or any attachments to it) is not an offer capable of acceptance or acceptance of an offer and it does not form part of a binding contractual agreement. Scottish Hydro-Electric, Southern Electric, SWALEC, S+S and SSE Power Distribution are trading names of the Scottish and Southern Energy Group. **
Re: migration and backup
the problem is first migration, the backup was stopped. Although, diskpool still has 20% capacity 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 - Original Message - From: Iain Barnetson [EMAIL PROTECTED] To: ADSM-L@VM.MARIST.EDU Sent: Friday, March 04, 2005 5:24 PM Subject: Re: migration and backup I'm in a similar situation where my primary stg diskpool is not big enough to contain a nights backups. I have the migration set to hi=0 lo=0. This means it's constantly migrating but I've 6 dedicated lto2 tape drives so isn't an issue for me. Regards, Iain -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of John Naylor Sent: 04 March 2005 10:17 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] migration and backup Your disk pool is way too small. It should be large enough to hold one night's backups If you can't do that, set your hi mig threshold to a low value say 10 or even lower At 80% your backup fills up the remaining 20% of your pool faster than migration can empty it. nghiatd [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@vm.marist.edu 04/03/2005 10:15 Please respond to ADSM: Dist Stor Manager ADSM-L@vm.marist.edu To ADSM-L@vm.marist.edu cc Subject migration and backup Hi all, I setup TSM ver 5.2 client on Win 2K that has more than 200 GB data, But TSM server machine only 20 GB hard disk. So I configure Backuppool --- Diskpool ---Tapepool. Diskpool : 18 GB High Migration Threshold : 80 % Low Migration Threshold : 0 %. People said when migration process is started, backup process is still continuous. But I view log file ; 02/03/2005 06:22:26 Normal File-- 719,648,279 \\BILL2_200411_2.tar * Unsuccessful* 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 \\BILL2_200411_2.tar [Sent] 02/03/2005 06:55:37 ANS1809W Session is lost; initializing session reopen procedure. 02/03/2005 06:55:53 ... successful 02/03/2005 06:56:16 Normal File-- 726,513,573 \\BILL2_200411_3.tar [Sent] So backup was stopped when migration process is started. Does anyone have idea to backup process still continue ? Nghiatd ** The information in this E-Mail is confidential and may be legally privileged. It may not represent the views of Scottish and Southern Energy Group. It is intended solely for the addressees. Access to this E-Mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any unauthorised recipient should advise the sender immediately of the error in transmission. Unless specifically stated otherwise, this email (or any attachments to it) is not an offer capable of acceptance or acceptance of an offer and it does not form part of a binding contractual agreement. Scottish Hydro-Electric, Southern Electric, SWALEC, S+S and SSE Power Distribution are trading names of the Scottish and Southern Energy Group. **
Re: migration and backup
So the data was migrating from diskpool to tape? Is it an offline tape that the error relates to? Can you check your actlog for that time and see if it mentions looking for a specific tape at that time, then see where the tape is, if it's set to offline: readonly, offiste, etc. Is you tape pool set to collocate? Looks like the migration was wanting to put some data ona specific tape and couldn't get access to it. -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of nghiatd Sent: 04 March 2005 10:49 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] migration and backup the problem is first migration, the backup was stopped. Although, diskpool still has 20% capacity 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 - Original Message - From: Iain Barnetson [EMAIL PROTECTED] To: ADSM-L@VM.MARIST.EDU Sent: Friday, March 04, 2005 5:24 PM Subject: Re: migration and backup I'm in a similar situation where my primary stg diskpool is not big enough to contain a nights backups. I have the migration set to hi=0 lo=0. This means it's constantly migrating but I've 6 dedicated lto2 tape drives so isn't an issue for me. Regards, Iain -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of John Naylor Sent: 04 March 2005 10:17 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] migration and backup Your disk pool is way too small. It should be large enough to hold one night's backups If you can't do that, set your hi mig threshold to a low value say 10 or even lower At 80% your backup fills up the remaining 20% of your pool faster than migration can empty it. nghiatd [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@vm.marist.edu 04/03/2005 10:15 Please respond to ADSM: Dist Stor Manager ADSM-L@vm.marist.edu To ADSM-L@vm.marist.edu cc Subject migration and backup Hi all, I setup TSM ver 5.2 client on Win 2K that has more than 200 GB data, But TSM server machine only 20 GB hard disk. So I configure Backuppool --- Diskpool ---Tapepool. Diskpool : 18 GB High Migration Threshold : 80 % Low Migration Threshold : 0 %. People said when migration process is started, backup process is still continuous. But I view log file ; 02/03/2005 06:22:26 Normal File-- 719,648,279 \\BILL2_200411_2.tar * Unsuccessful* 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 \\BILL2_200411_2.tar [Sent] 02/03/2005 06:55:37 ANS1809W Session is lost; initializing session reopen procedure. 02/03/2005 06:55:53 ... successful 02/03/2005 06:56:16 Normal File-- 726,513,573 \\BILL2_200411_3.tar [Sent] So backup was stopped when migration process is started. Does anyone have idea to backup process still continue ? Nghiatd ** The information in this E-Mail is confidential and may be legally privileged. It may not represent the views of Scottish and Southern Energy Group. It is intended solely for the addressees. Access to this E-Mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any unauthorised recipient should advise the sender immediately of the error in transmission. Unless specifically stated otherwise, this email (or any attachments to it) is not an offer capable of acceptance or acceptance of an offer and it does not form part of a binding contractual agreement. Scottish Hydro-Electric, Southern Electric, SWALEC, S+S and SSE Power Distribution are trading names of the Scottish and Southern Energy Group. **
Re: migration and backup
I don't think Waiting for mount of offline media message relative to tape. It is relative to Diskpool. I used q drive, monitor actlog and I see data still write to tape (only one tape) I don't set collocate for tape. - Original Message - From: Iain Barnetson [EMAIL PROTECTED] To: ADSM-L@VM.MARIST.EDU Sent: Friday, March 04, 2005 5:47 PM Subject: Re: migration and backup So the data was migrating from diskpool to tape? Is it an offline tape that the error relates to? Can you check your actlog for that time and see if it mentions looking for a specific tape at that time, then see where the tape is, if it's set to offline: readonly, offiste, etc. Is you tape pool set to collocate? Looks like the migration was wanting to put some data ona specific tape and couldn't get access to it. -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of nghiatd Sent: 04 March 2005 10:49 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] migration and backup the problem is first migration, the backup was stopped. Although, diskpool still has 20% capacity 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 - Original Message - From: Iain Barnetson [EMAIL PROTECTED] To: ADSM-L@VM.MARIST.EDU Sent: Friday, March 04, 2005 5:24 PM Subject: Re: migration and backup I'm in a similar situation where my primary stg diskpool is not big enough to contain a nights backups. I have the migration set to hi=0 lo=0. This means it's constantly migrating but I've 6 dedicated lto2 tape drives so isn't an issue for me. Regards, Iain -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of John Naylor Sent: 04 March 2005 10:17 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] migration and backup Your disk pool is way too small. It should be large enough to hold one night's backups If you can't do that, set your hi mig threshold to a low value say 10 or even lower At 80% your backup fills up the remaining 20% of your pool faster than migration can empty it. nghiatd [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@vm.marist.edu 04/03/2005 10:15 Please respond to ADSM: Dist Stor Manager ADSM-L@vm.marist.edu To ADSM-L@vm.marist.edu cc Subject migration and backup Hi all, I setup TSM ver 5.2 client on Win 2K that has more than 200 GB data, But TSM server machine only 20 GB hard disk. So I configure Backuppool --- Diskpool ---Tapepool. Diskpool : 18 GB High Migration Threshold : 80 % Low Migration Threshold : 0 %. People said when migration process is started, backup process is still continuous. But I view log file ; 02/03/2005 06:22:26 Normal File-- 719,648,279 \\BILL2_200411_2.tar * Unsuccessful* 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 \\BILL2_200411_2.tar [Sent] 02/03/2005 06:55:37 ANS1809W Session is lost; initializing session reopen procedure. 02/03/2005 06:55:53 ... successful 02/03/2005 06:56:16 Normal File-- 726,513,573 \\BILL2_200411_3.tar [Sent] So backup was stopped when migration process is started. Does anyone have idea to backup process still continue ? Nghiatd ** The information in this E-Mail is confidential and may be legally privileged. It may not represent the views of Scottish and Southern Energy Group. It is intended solely for the addressees. Access to this E-Mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any unauthorised recipient should advise the sender immediately of the error in transmission. Unless specifically stated otherwise, this email (or any attachments to it) is not an offer capable of acceptance or acceptance of an offer and it does not form part of a binding contractual agreement. Scottish Hydro-Electric, Southern Electric, SWALEC, S+S and SSE Power Distribution are trading names of the Scottish and Southern Energy Group. **
Re: migration and backup
Was any of the diskpool volumes varied offline at the time? Is there anything in the clients backup log around that time? Have you subsequently managed to get a backup of that server completed or is this an ongoing issue? I'm wondering if it's just a case of the disk subsystem not being able to cope with the i/o demands made on it during the backup/migration. Can you see how far into the backup job these errors are occurrring, how much data has been backed up to the 20Gb disk when these errors occur. Is it occcurring around the point where the disk reaches 80% and starts migrating? I suspect backing up 200Gb of data to a single 20Gb disk which is concurrently migrating the incoming data is perhaps a bit optimistic. You have 1x 20Gb disk, is it IDE or SCSI? Can you add more disks/faster disks? Regards, Iain Barnetson -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of nghiatd Sent: 04 March 2005 11:12 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] migration and backup I don't think Waiting for mount of offline media message relative to tape. It is relative to Diskpool. I used q drive, monitor actlog and I see data still write to tape (only one tape) I don't set collocate for tape. - Original Message - From: Iain Barnetson [EMAIL PROTECTED] To: ADSM-L@VM.MARIST.EDU Sent: Friday, March 04, 2005 5:47 PM Subject: Re: migration and backup So the data was migrating from diskpool to tape? Is it an offline tape that the error relates to? Can you check your actlog for that time and see if it mentions looking for a specific tape at that time, then see where the tape is, if it's set to offline: readonly, offiste, etc. Is you tape pool set to collocate? Looks like the migration was wanting to put some data ona specific tape and couldn't get access to it. -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of nghiatd Sent: 04 March 2005 10:49 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] migration and backup the problem is first migration, the backup was stopped. Although, diskpool still has 20% capacity 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 - Original Message - From: Iain Barnetson [EMAIL PROTECTED] To: ADSM-L@VM.MARIST.EDU Sent: Friday, March 04, 2005 5:24 PM Subject: Re: migration and backup I'm in a similar situation where my primary stg diskpool is not big enough to contain a nights backups. I have the migration set to hi=0 lo=0. This means it's constantly migrating but I've 6 dedicated lto2 tape drives so isn't an issue for me. Regards, Iain -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of John Naylor Sent: 04 March 2005 10:17 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] migration and backup Your disk pool is way too small. It should be large enough to hold one night's backups If you can't do that, set your hi mig threshold to a low value say 10 or even lower At 80% your backup fills up the remaining 20% of your pool faster than migration can empty it. nghiatd [EMAIL PROTECTED] Sent by: ADSM: Dist Stor Manager ADSM-L@vm.marist.edu 04/03/2005 10:15 Please respond to ADSM: Dist Stor Manager ADSM-L@vm.marist.edu To ADSM-L@vm.marist.edu cc Subject migration and backup Hi all, I setup TSM ver 5.2 client on Win 2K that has more than 200 GB data, But TSM server machine only 20 GB hard disk. So I configure Backuppool --- Diskpool ---Tapepool. Diskpool : 18 GB High Migration Threshold : 80 % Low Migration Threshold : 0 %. People said when migration process is started, backup process is still continuous. But I view log file ; 02/03/2005 06:22:26 Normal File-- 719,648,279 \\BILL2_200411_2.tar * Unsuccessful* 02/03/2005 06:22:26 A1114I Waiting for mount of offline media. 02/03/2005 06:55:37 Retry # 1 Normal File-- 719,648,279 \\BILL2_200411_2.tar [Sent] 02/03/2005 06:55:37 ANS1809W Session is lost; initializing session reopen procedure. 02/03/2005 06:55:53 ... successful 02/03/2005 06:56:16 Normal File-- 726,513,573 \\BILL2_200411_3.tar [Sent] So backup was stopped when migration process is started. Does anyone have idea to backup process still continue ? Nghiatd ** The information in this E-Mail is confidential and may be legally privileged. It may not represent the views of Scottish and Southern Energy Group. It is intended solely for the addressees. Access to this E-Mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any unauthorised recipient should advise the sender immediately of the error in transmission. Unless specifically stated otherwise, this email (or any attachments to it) is not an offer capable
Re: migration and backup
I use LTO Gen 2. Its read/write speed is 15-20 MB/s more than network speed (100Mbps). So migration is faster than backup Maybe, but 20% of your 18gb pool is not a lot spare, and I do not think you will get a continuous migration process anyway. It will reach zero and then go all the way back to potentially more than 80% depending how big the file in progress is. To find out exactly what is happening you could schedule regular say 10 minute through the night q stg commands so you can see exactly what is going on with your disk pool. John ** The information in this E-Mail is confidential and may be legally privileged. It may not represent the views of Scottish and Southern Energy Group. It is intended solely for the addressees. Access to this E-Mail by anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any unauthorised recipient should advise the sender immediately of the error in transmission. Unless specifically stated otherwise, this email (or any attachments to it) is not an offer capable of acceptance or acceptance of an offer and it does not form part of a binding contractual agreement. Scottish Hydro-Electric, Southern Electric, SWALEC, S+S and SSE Power Distribution are trading names of the Scottish and Southern Energy Group. **
Re: Migration requires Backup ... ?
Sascha, I currently have a little problem understanding how the switch Migration requires Backup works for my HSM-Client. I understand that a file can only be migrated to TSM when a Backup version of this file already exists on the server. Nope. If you define in your MGmtclass MIGREQUIRESBkup NO, then migration will can take place even if there is no backup version. Am I right that I have 2 backups of the same file consuming twice the space on the tapes if I use this option ? Yes, I'm afraid you'r right. But because HSM is still a little bit tricky (ok, we use it now for more then 7 years), we prefere MIGREQUIRESBkup YES, which is the default also. Quite confused, Not anymore, I hope... Cheers, Henk ten Have.
Re: Migration requires Backup ... ?
Well, technically, you will have one backup (or more depending on your policy definition) and one migrated copy. But to answer your question, yes - you will have another copy of the file that is the migrated copy - separate from the backup copy. --- Sascha Askani [EMAIL PROTECTED] wrote: Hi TSMer ! I currently have a little problem understanding how the switch Migration requires Backup works for my HSM-Client. I understand that a file can only be migrated to TSM when a Backup version of this file already exists on the server. Am I right that I have 2 backups of the same file consuming twice the space on the tapes if I use this option ? Quite confused, Sascha Askani -- +++ GMX - Mail, Messaging more http://www.gmx.net +++ NEU: Mit GMX ins Internet. Rund um die Uhr f|r 1 ct/ Min. surfen! __ Do you Yahoo!? U2 on LAUNCH - Exclusive greatest hits videos http://launch.yahoo.com/u2
