Re: Deduplication question
On 06/09/11 22:40, Richard van Denzel wrote: Hi All, Just a question aboutn the internal dedup of TSM. When I dedup a storage pool and then backup the pool to a dedup copy pool, will the data in the storage pool backup be transferred deduped or will it get undeduped first, then transferred and then dedupped again? Richard. Richard, The chapter 'managing storage pools and volumes' in the TSM 6.1 Admin Guide has a decent section on deduplicating data. We are investigating server- and client-side dedupe but we haven't tried what you want to do in our test environment. However, the above document suggests in two places that the data will be copied/moved in its deduplicated 'state' rather than being rebuilt, copied and deduplicated again. Ian Smith Oxford University
Re: Deduplication question
Hi Richard, No, the deduplicated data is not recomposed when backing up to a deduplicated copy storage pool. Recommended reading: http://www.ibm.com/developerworks/wikis/pages/viewpage.action?pageId=108134649 http://www.ibm.com/developerworks/wikis/display/tivolistoragemanager/Data +deduplication+best+practices+for+Tivoli+Storage+Manager+V6.2 Best regards, Andy Raibeck IBM Software Group Tivoli Storage Manager Client Product Development Level 3 Team Lead Internal Notes e-mail: Andrew Raibeck/Hartford/IBM@IBMUS Internet e-mail: stor...@us.ibm.com IBM Tivoli Storage Manager support web page: http://www.ibm.com/support/entry/portal/Overview/Software/Tivoli/Tivoli_Storage_Manager "ADSM: Dist Stor Manager" wrote on 2011-09-06 17:40:49: > From: Richard van Denzel > To: ADSM-L@vm.marist.edu > Date: 2011-09-06 17:44 > Subject: Deduplication question > Sent by: "ADSM: Dist Stor Manager" > > Hi All, > > Just a question aboutn the internal dedup of TSM. When I dedup a storage > pool and then backup the pool to a dedup copy pool, will the data in the > storage pool backup be transferred deduped or will it get undeduped first, > then transferred and then dedupped again? > > Richard.
Deduplication question
Hi All, Just a question aboutn the internal dedup of TSM. When I dedup a storage pool and then backup the pool to a dedup copy pool, will the data in the storage pool backup be transferred deduped or will it get undeduped first, then transferred and then dedupped again? Richard.
Re: Deduplication Question
You're welcome. Been there, done that, got the scars to prove it! ;>) -Original Message- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Jim Neal Sent: Thursday, March 10, 2011 4:44 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] Deduplication Question Importance: High Thanks Wanda! That worked perfectly! I owe you one! Jim -Original Message- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Prather, Wanda Sent: Thursday, March 10, 2011 1:20 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] Deduplication Question Check the MOUNTLIMIT in the client definition. It controls how many mount points in a sequential pool the client can use at once. -Original Message- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Jim Neal Sent: Thursday, March 10, 2011 4:16 PM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] Deduplication Question Importance: High Hi All, I am testing Deduplication on a Red Hat 5 , 64 Bit, X86 Linux Server, using TSM Server version 6.2.2.2. I set up a storage pool for Deduplication and using a file devclass. When I try to back up a windows client to the storage pool, I am getting an error that says "ANR0525W - Server Media mount not possible". However, when I back up to a standard storage pool with a disk devclass, the same client backs up perfectly and then the data can be migrated to the deduplicated storage pool. My questions are these: 1) Can you back up a client directly to a deduplicated storage pool? If so, how? 2) What criteria should be used for the creation of volumes for a deduplicated storage pool? 3) Is there documentation that specifically says that you have to migrate data to the deduplicated storage pool? Any insight on these issues will be greatly appreciated! Thanks! Jim Neal Sr. TSM Administrator U.C. Berkeley Storage and Backup Group
Re: Deduplication Question
Thanks Wanda! That worked perfectly! I owe you one! Jim -Original Message- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Prather, Wanda Sent: Thursday, March 10, 2011 1:20 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] Deduplication Question Check the MOUNTLIMIT in the client definition. It controls how many mount points in a sequential pool the client can use at once. -Original Message- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Jim Neal Sent: Thursday, March 10, 2011 4:16 PM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] Deduplication Question Importance: High Hi All, I am testing Deduplication on a Red Hat 5 , 64 Bit, X86 Linux Server, using TSM Server version 6.2.2.2. I set up a storage pool for Deduplication and using a file devclass. When I try to back up a windows client to the storage pool, I am getting an error that says "ANR0525W - Server Media mount not possible". However, when I back up to a standard storage pool with a disk devclass, the same client backs up perfectly and then the data can be migrated to the deduplicated storage pool. My questions are these: 1) Can you back up a client directly to a deduplicated storage pool? If so, how? 2) What criteria should be used for the creation of volumes for a deduplicated storage pool? 3) Is there documentation that specifically says that you have to migrate data to the deduplicated storage pool? Any insight on these issues will be greatly appreciated! Thanks! Jim Neal Sr. TSM Administrator U.C. Berkeley Storage and Backup Group
Re: Deduplication Question
Check the MOUNTLIMIT in the client definition. It controls how many mount points in a sequential pool the client can use at once. -Original Message- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Jim Neal Sent: Thursday, March 10, 2011 4:16 PM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] Deduplication Question Importance: High Hi All, I am testing Deduplication on a Red Hat 5 , 64 Bit, X86 Linux Server, using TSM Server version 6.2.2.2. I set up a storage pool for Deduplication and using a file devclass. When I try to back up a windows client to the storage pool, I am getting an error that says "ANR0525W - Server Media mount not possible". However, when I back up to a standard storage pool with a disk devclass, the same client backs up perfectly and then the data can be migrated to the deduplicated storage pool. My questions are these: 1) Can you back up a client directly to a deduplicated storage pool? If so, how? 2) What criteria should be used for the creation of volumes for a deduplicated storage pool? 3) Is there documentation that specifically says that you have to migrate data to the deduplicated storage pool? Any insight on these issues will be greatly appreciated! Thanks! Jim Neal Sr. TSM Administrator U.C. Berkeley Storage and Backup Group
Deduplication Question
Hi All, I am testing Deduplication on a Red Hat 5 , 64 Bit, X86 Linux Server, using TSM Server version 6.2.2.2. I set up a storage pool for Deduplication and using a file devclass. When I try to back up a windows client to the storage pool, I am getting an error that says "ANR0525W - Server Media mount not possible". However, when I back up to a standard storage pool with a disk devclass, the same client backs up perfectly and then the data can be migrated to the deduplicated storage pool. My questions are these: 1) Can you back up a client directly to a deduplicated storage pool? If so, how? 2) What criteria should be used for the creation of volumes for a deduplicated storage pool? 3) Is there documentation that specifically says that you have to migrate data to the deduplicated storage pool? Any insight on these issues will be greatly appreciated! Thanks! Jim Neal Sr. TSM Administrator U.C. Berkeley Storage and Backup Group
Re: TSM 6.2 Deduplication Question
Shawn, I was the presenter for that STE but I did not cover this as part of the presentation. Let me find the answer for you and I will reply back to the listserv. Dave Canan IBM TSM Advanced Technical Skills Ddcanan at us.ibm.com -Original Message- From: Bill Boyer Date: Fri, 28 May 2010 23:39:37 To: Subject: Re: [ADSM-L] TSM 6.2 Deduplication Question Might want to take a look at this webcast from yesterday: http://www-01.ibm.com/software/sysmgmt/products/support/TE/techex_G856816E23 063W02.html Implementation and Use of TSM Client/Server Data Deduplication with TSM 6.2 -Original Message- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Shawn Drew Sent: Friday, May 28, 2010 4:20 PM To: ADSM-L@VM.MARIST.EDU Subject: TSM 6.2 Deduplication Question I'm reviewing the features of 6.2 and trying to decide if its worth the new-version-risk for one of our smaller branches. We are a 5.5 shop, so I'm a little behind on the details of the new features. The manual says that deduplication is available only on storage pools using a File device class. (many times!) However, I noticed this other entry under Virtual Volumes: When you copy or move data from a deduplicated storage pool to a non-deduplicated storage pool that uses virtual volumes, the data is reconstructed. When you copy or move data to a "deduplicated storage pool that uses virtual volumes" the data is deduplicated. http://publib.boulder.ibm.com/infocenter/tsminfo/v6r2/index.jsp?topic=/com.i bm.itsm.srv.doc/t_network_virtualvol.html From that, I am inferring you can use a device class of "server" as well. This would be a huge for us if this were true. Can anyone confirm or deny this? Is this just a documentation hiccup? Regards, Shawn Shawn Drew This message and any attachments (the "message") is intended solely for the addressees and is confidential. If you receive this message in error, please delete it and immediately notify the sender. Any use not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval. The internet can not guarantee the integrity of this message. BNP PARIBAS (and its subsidiaries) shall (will) not therefore be liable for the message if modified. Please note that certain functions and services for BNP Paribas may be performed by BNP Paribas RCC, Inc.
Re: TSM 6.2 Deduplication Question
Might want to take a look at this webcast from yesterday: http://www-01.ibm.com/software/sysmgmt/products/support/TE/techex_G856816E23 063W02.html Implementation and Use of TSM Client/Server Data Deduplication with TSM 6.2 -Original Message- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Shawn Drew Sent: Friday, May 28, 2010 4:20 PM To: ADSM-L@VM.MARIST.EDU Subject: TSM 6.2 Deduplication Question I'm reviewing the features of 6.2 and trying to decide if its worth the new-version-risk for one of our smaller branches. We are a 5.5 shop, so I'm a little behind on the details of the new features. The manual says that deduplication is available only on storage pools using a File device class. (many times!) However, I noticed this other entry under Virtual Volumes: When you copy or move data from a deduplicated storage pool to a non-deduplicated storage pool that uses virtual volumes, the data is reconstructed. When you copy or move data to a "deduplicated storage pool that uses virtual volumes" the data is deduplicated. http://publib.boulder.ibm.com/infocenter/tsminfo/v6r2/index.jsp?topic=/com.i bm.itsm.srv.doc/t_network_virtualvol.html >From that, I am inferring you can use a device class of "server" as well. This would be a huge for us if this were true. Can anyone confirm or deny this? Is this just a documentation hiccup? Regards, Shawn Shawn Drew This message and any attachments (the "message") is intended solely for the addressees and is confidential. If you receive this message in error, please delete it and immediately notify the sender. Any use not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval. The internet can not guarantee the integrity of this message. BNP PARIBAS (and its subsidiaries) shall (will) not therefore be liable for the message if modified. Please note that certain functions and services for BNP Paribas may be performed by BNP Paribas RCC, Inc.
TSM 6.2 Deduplication Question
I'm reviewing the features of 6.2 and trying to decide if its worth the new-version-risk for one of our smaller branches. We are a 5.5 shop, so I'm a little behind on the details of the new features. The manual says that deduplication is available only on storage pools using a File device class. (many times!) However, I noticed this other entry under Virtual Volumes: When you copy or move data from a deduplicated storage pool to a non-deduplicated storage pool that uses virtual volumes, the data is reconstructed. When you copy or move data to a "deduplicated storage pool that uses virtual volumes" the data is deduplicated. http://publib.boulder.ibm.com/infocenter/tsminfo/v6r2/index.jsp?topic=/com.ibm.itsm.srv.doc/t_network_virtualvol.html >From that, I am inferring you can use a device class of "server" as well. This would be a huge for us if this were true. Can anyone confirm or deny this? Is this just a documentation hiccup? Regards, Shawn Shawn Drew This message and any attachments (the "message") is intended solely for the addressees and is confidential. If you receive this message in error, please delete it and immediately notify the sender. Any use not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval. The internet can not guarantee the integrity of this message. BNP PARIBAS (and its subsidiaries) shall (will) not therefore be liable for the message if modified. Please note that certain functions and services for BNP Paribas may be performed by BNP Paribas RCC, Inc.
