Re: TSM Disk Pool Management
Manuel, The remote copypool ended up being NetWare 6, i can serve up a 8TB volume to TSM with Novell Storage Services (NSS). NetWare's Common Internet FileSystem (CIFS) allows TSM access without loading a NetWare client on the TSM server. i chose this approach because copypools can only access sequential media, so NAS was my only option. It also appears copypools can only have a single device which limited me to one NAS volume per copypool. Windows volumes have a limit of 2TB which was too small for my backuppool, short of having to break it up into multiple 2TB backuppools and copypools, i decide to use NetWare to get around this, we are also a NetWare shop so this was a no brainier. Everything seems to working fine so far but it's still new. I also have another 7TB of ATA disk arrays on order that should get here in a couple of weeks, the price is now down to ~$3,000/TB. Let me know how this solution sound to you and also let me know what you decide to go with. Thanks, john [EMAIL PROTECTED] 02/20/03 09:03AM John, I read your message on adsm.org Mailing List. I wonder if you implemented the remote copy pool. We are considering a similar solution, and we are talking to DataCore and FalconStor. Thanks, Manuel J. Sanchez Assurant Group (305) 252-7035 x32153 [EMAIL PROTECTED] - NOTICE: This communication is intended only for the person or entity to whom it is addressed and may contain confidential, proprietary, and/or privileged material. Unless you are the intended addressee, any review, reliance, dissemination, distribution, copying or use whatsoever of this communication is strictly prohibited. If you received this in error, please reply immediately and delete the material from all computers. Email sent through the Internet is not secure. Do not use email to send us confidential information such as credit card numbers, PIN numbers, passwords, Social Security Numbers, Account numbers, or other important and confidential information.
Re: TSM Disk Pool Management
Hi Wanda, We still use tape for the copypool, but this is now not a viable DR solutions due to the time factor to restore from tape. We are presently evaluating ISCSI and NAS solutions for a disk copypool at a remote site, using 1Gb Ethernet (we have dark fibre to our DR site). The two ISCSI products we have evaluated so far are Ipstor from Falconstor and SANsympthony from DataCore, both are great products. The NAS solutions we are presently looking at is NetWare 6's NSS (with CIFS since our TSM Server is W2K), it's looking really good since is can server up a 8TB volume and the copypool can use a device type of FILE. Novell's solution is also the most affordable (free since we are a big NetWare shop). Our Audit department has already given us the OK to go to disk for the copypool as long as it's offsite. I'll backup the db to the offsite storage also, so in theory if we lose our TSM server, i can build a new one restore the DB from the remote site and start doing restores immediately from the copypool, if the backupool is gone TSM automatically pulls files from the copypool. I hope to have this all in place in the next couple months (if not sooner) using ATA drive enclosures, right now i can get 3.2 TB for $10,000. i have $25,000 in the budget, so if i go with the NetWare NAS i should easily make it. Let me know how this all sounds to you or if you have any further questions. john Synovus Prather, Wanda [EMAIL PROTECTED] 01/30/03 05:11PM Hi John, We have also starting looking at an all disk backuppool for the future. I am curious how you handle: 1) backups of your DB 2) disaster recovery planning/offsite backups Thanks! Wanda Prather Johns Hopkins Applied Physics Lab -Original Message- From: John Underdown [mailto:[EMAIL PROTECTED]] Sent: Friday, January 10, 2003 8:50 AM To: [EMAIL PROTECTED] Subject: Re: TSM Disk Pool Management Mark, We been using a all disk backuppool for a number of years now. It's grown to 4TB, we just keep adding disk expansion to the server as we need more storage (We are now looking at the new ATA Raid Expansion Cabinets 3TB for $10,000). We backup 377 servers (80 to 100 GB total) nightly and growing. The TSM database is 15GB sitting on raid 10 with 15K rpm drives (very fast) , i also defrag the DB monthly. This is a dream setup and works very well, restores run in the blink of a eye. I run the TSM server by myself as a part-time duty. The only problem you'll have is figuring out what to do with all your free time. The is a common topic on the list, search the achives at www.adsm.org. Let me know if you have any questions. John Synovus Synovus Makes FORTUNE '100 Best Companies To Work For' in America For Sixth Straight Year. -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of Hokanson, Mark Sent: Thursday, January 09, 2003 7:15 AM To: [EMAIL PROTECTED] Subject: TSM Disk Pool Management We are considering creating an extremely large TSM disk storage pool (IE: 1-10TB). The goal being to eliminate going to tape. Does anyone have any really BIG disk pools? Are there tools available for managing large TSM disk pools over time. (IE: Reclamation, Aging Data, etc) The documentation from Tivoli suggests that we need to set it up as a device type=FILE. What are the drawbacks using this approach? Is performance dramatically impacted? etc... Thanks in advance, Mark Hokanson Thomson Legal Regulatory - NOTICE: This communication is intended only for the person or entity to whom it is addressed and may contain confidential, proprietary, and/or privileged material. Unless you are the intended addressee, any review, reliance, dissemination, distribution, copying or use whatsoever of this communication is strictly prohibited. If you received this in error, please reply immediately and delete the material from all computers. Email sent through the Internet is not secure. Do not use email to send us confidential information such as credit card numbers, PIN numbers, passwords, Social Security Numbers, Account numbers, or other important and confidential information. - NOTICE: This communication is intended only for the person or entity to whom it is addressed and may contain confidential, proprietary, and/or privileged material. Unless you are the intended addressee, any review, reliance, dissemination, distribution, copying or use whatsoever of this communication is strictly prohibited. If you received this in error, please reply immediately and delete the material from all computers. Email sent through the Internet is not secure. Do not use email to send us confidential information such as credit card numbers, PIN numbers, passwords, Social Security Numbers, Account numbers, or other important and confidential information.
Re: TSM Disk Pool Management
Mark, We been using a all disk backuppool for a number of years now. It's grown to 4TB, we just keep adding disk expansion to the server as we need more storage (We are now looking at the new ATA Raid Expansion Cabinets 3TB for $10,000). We backup 377 servers (80 to 100 GB total) nightly and growing. The TSM database is 15GB sitting on raid 10 with 15K rpm drives (very fast) , i also defrag the DB monthly. This is a dream setup and works very well, restores run in the blink of a eye. I run the TSM server by myself as a part-time duty. The only problem you'll have is figuring out what to do with all your free time. The is a common topic on the list, search the achives at www.adsm.org. Let me know if you have any questions. John Synovus Synovus Makes FORTUNE '100 Best Companies To Work For' in America For Sixth Straight Year. -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of Hokanson, Mark Sent: Thursday, January 09, 2003 7:15 AM To: [EMAIL PROTECTED] Subject: TSM Disk Pool Management We are considering creating an extremely large TSM disk storage pool (IE: 1-10TB). The goal being to eliminate going to tape. Does anyone have any really BIG disk pools? Are there tools available for managing large TSM disk pools over time. (IE: Reclamation, Aging Data, etc) The documentation from Tivoli suggests that we need to set it up as a device type=FILE. What are the drawbacks using this approach? Is performance dramatically impacted? etc... Thanks in advance, Mark Hokanson Thomson Legal Regulatory - NOTICE: This communication is intended only for the person or entity to whom it is addressed and may contain confidential, proprietary, and/or privileged material. Unless you are the intended addressee, any review, reliance, dissemination, distribution, copying or use whatsoever of this communication is strictly prohibited. If you received this in error, please reply immediately and delete the material from all computers. Email sent through the Internet is not secure. Do not use email to send us confidential information such as credit card numbers, PIN numbers, passwords, Social Security Numbers, Account numbers, or other important and confidential information.
Re: TSM Disk Pool Management
Mark, Yep. Retention is 30 days. Device type is Disk, don't use File because you have to manage the volumes like tape and that takes extra work. i've never had a problem with fragmentation, i suppose it's possible if you make your disk volumes very small, my disk volumes are 200Gb each and my backuppool Pct Util has run in the high 90's with no problems. Has far as keeping my storage small is where i really have to get creative. First, all clients compress data (don't turn on compress always because already compressed files will grow), that way files are stored compressed on the disk pools. Second and most important use global excludes so you don't backup any thing you don't need. One of the biggest saving was not backing up indexes for Groupwise Databases, all groupwise admin's know if they restore a DB they have to reindex, the indexes take up much more space than the DB's themselves. i also exclude temp files and subdirectories, recycle directories, and salvage directories on NetWare Servers. If it wasn't for my creative use of excludes my storage requirements for backups would be much greater. You need to do a lot of work with users, administrators, and dba's to get backups down to the bare minium. Let me know if you have any other questions. John Synovus Hokanson, Mark [EMAIL PROTECTED] 01/10/03 10:22AM John, So all of your backup data is on the disk and none ever goes to tape? What is your retention? Are you device type file? How do you handle storage pool fragmentation? With 377 servers at 100gB nightly it seems you would fill your 4TB with about 40 day retention, correct? Thanks a lot for your help, Mark -Original Message- From: John Underdown [mailto:[EMAIL PROTECTED]] Sent: Friday, January 10, 2003 7:50 AM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: TSM Disk Pool Management Mark, We been using a all disk backuppool for a number of years now. It's grown to 4TB, we just keep adding disk expansion to the server as we need more storage (We are now looking at the new ATA Raid Expansion Cabinets 3TB for $10,000). We backup 377 servers (80 to 100 GB total) nightly and growing. The TSM database is 15GB sitting on raid 10 with 15K rpm drives (very fast) , i also defrag the DB monthly. This is a dream setup and works very well, restores run in the blink of a eye. I run the TSM server by myself as a part-time duty. The only problem you'll have is figuring out what to do with all your free time. The is a common topic on the list, search the achives at www.adsm.org. Let me know if you have any questions. John Synovus Synovus Makes FORTUNE '100 Best Companies To Work For' in America For Sixth Straight Year. -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of Hokanson, Mark Sent: Thursday, January 09, 2003 7:15 AM To: [EMAIL PROTECTED] Subject: TSM Disk Pool Management We are considering creating an extremely large TSM disk storage pool (IE: 1-10TB). The goal being to eliminate going to tape. Does anyone have any really BIG disk pools? Are there tools available for managing large TSM disk pools over time. (IE: Reclamation, Aging Data, etc) The documentation from Tivoli suggests that we need to set it up as a device type=FILE. What are the drawbacks using this approach? Is performance dramatically impacted? etc... Thanks in advance, Mark Hokanson Thomson Legal Regulatory NOTICE: This communication is intended only for the person or entity to whom it is addressed and may contain confidential, proprietary, and/or privileged material. Unless you are the intended addressee, any review, reliance, dissemination, distribution, copying or use whatsoever of this communication is strictly prohibited. If you received this in error, please reply immediately and delete the material from all computers. Email sent through the Internet is not secure. Do not use email to send us confidential information such as credit card numbers, PIN numbers, passwords, Social Security Numbers, Account numbers, or other important and confidential information. - NOTICE: This communication is intended only for the person or entity to whom it is addressed and may contain confidential, proprietary, and/or privileged material. Unless you are the intended addressee, any review, reliance, dissemination, distribution, copying or use whatsoever of this communication is strictly prohibited. If you received this in error, please reply immediately and delete the material from all computers. Email sent through the Internet is not secure. Do not use email to send us confidential information such as credit card numbers, PIN numbers, passwords, Social Security Numbers, Account numbers, or other important and confidential information.
TSM Disk Pool Management
We are considering creating an extremely large TSM disk storage pool (IE: 1-10TB). The goal being to eliminate going to tape. Does anyone have any really BIG disk pools? Are there tools available for managing large TSM disk pools over time. (IE: Reclamation, Aging Data, etc) The documentation from Tivoli suggests that we need to set it up as a device type=FILE. What are the drawbacks using this approach? Is performance dramatically impacted? etc... Thanks in advance, Mark Hokanson Thomson Legal Regulatory
Re: TSM Disk Pool Management
I have a customer with 9 TSM servers and around 20TB of disk pool storage. We use a device class of DISK because data does not stay on disk, instead it moves off to tape daily. If you plan to use this large diskpool to permanently store your backup data, then you should definitely use a devclass of FILE. Why? Because FILE is sequential and the DISK device class is random. Over time a DISK storage pool will fragment as expiration occurs and TSM doesn't automatically do a reorg on it like it can with a sequential FILE disk pool. -- Joshua S. Bassi IBM Certified - AIX 4/5L, SAN, Shark Tivoli Certified Consultant -ADSM/TSM eServer Systems Expert -pSeries HACMP AIX, HACMP, Storage, TSM Consultant Cell (831) 595-3962 [EMAIL PROTECTED] -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of Hokanson, Mark Sent: Thursday, January 09, 2003 7:15 AM To: [EMAIL PROTECTED] Subject: TSM Disk Pool Management We are considering creating an extremely large TSM disk storage pool (IE: 1-10TB). The goal being to eliminate going to tape. Does anyone have any really BIG disk pools? Are there tools available for managing large TSM disk pools over time. (IE: Reclamation, Aging Data, etc) The documentation from Tivoli suggests that we need to set it up as a device type=FILE. What are the drawbacks using this approach? Is performance dramatically impacted? etc... Thanks in advance, Mark Hokanson Thomson Legal Regulatory
Re: TSM Disk Pool Management
We have given this a little bit of thought also. You would not need to use type=file - just enlarge your current disk pool. Expire will age the files out of there. The only thing to watch, is for it to be getting full, and more disk needs to be added. Andy Carlson|\ _,,,---,,_ Senior Technical Specialist ZZZzz /,`.-'`'-. ;-;;,_ BJC Health Care|,4- ) )-,_. ,\ ( `'-' St. Louis, Missouri '---''(_/--' `-'\_) Cat Pics: http://andyc.dyndns.org/animal.html On Thu, 9 Jan 2003, Hokanson, Mark wrote: We are considering creating an extremely large TSM disk storage pool (IE: 1-10TB). The goal being to eliminate going to tape. Does anyone have any really BIG disk pools? Are there tools available for managing large TSM disk pools over time. (IE: Reclamation, Aging Data, etc) The documentation from Tivoli suggests that we need to set it up as a device type=FILE. What are the drawbacks using this approach? Is performance dramatically impacted? etc... Thanks in advance, Mark Hokanson Thomson Legal Regulatory
Re: TSM Disk Pool Management
Unfortunately disk pools with a device class of DISK get fragmented and will incur a higher overhead penalty the longer they exist (without data moving off to tape). I had a customer try this configuration and it ended up blowing up in their face. -- Joshua S. Bassi IBM Certified - AIX 4/5L, SAN, Shark Tivoli Certified Consultant -ADSM/TSM eServer Systems Expert -pSeries HACMP AIX, HACMP, Storage, TSM Consultant Cell (831) 595-3962 [EMAIL PROTECTED] -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of Andy Carlson Sent: Thursday, January 09, 2003 11:09 AM To: [EMAIL PROTECTED] Subject: Re: TSM Disk Pool Management We have given this a little bit of thought also. You would not need to use type=file - just enlarge your current disk pool. Expire will age the files out of there. The only thing to watch, is for it to be getting full, and more disk needs to be added. Andy Carlson|\ _,,,---,,_ Senior Technical Specialist ZZZzz /,`.-'`'-. ;-;;,_ BJC Health Care|,4- ) )-,_. ,\ ( `'-' St. Louis, Missouri '---''(_/--' `-'\_) Cat Pics: http://andyc.dyndns.org/animal.html On Thu, 9 Jan 2003, Hokanson, Mark wrote: We are considering creating an extremely large TSM disk storage pool (IE: 1-10TB). The goal being to eliminate going to tape. Does anyone have any really BIG disk pools? Are there tools available for managing large TSM disk pools over time. (IE: Reclamation, Aging Data, etc) The documentation from Tivoli suggests that we need to set it up as a device type=FILE. What are the drawbacks using this approach? Is performance dramatically impacted? etc... Thanks in advance, Mark Hokanson Thomson Legal Regulatory
Re: TSM Disk Pool Management
would occasional move data (from disk to disk) not resolve this fragmentation issue? regards juraj Salak -Original Message- From: Joshua Bassi [mailto:[EMAIL PROTECTED]] Sent: Thursday, January 09, 2003 8:17 PM To: [EMAIL PROTECTED] Subject: Re: TSM Disk Pool Management Unfortunately disk pools with a device class of DISK get fragmented and will incur a higher overhead penalty the longer they exist (without data moving off to tape). I had a customer try this configuration and it ended up blowing up in their face. -- Joshua S. Bassi IBM Certified - AIX 4/5L, SAN, Shark Tivoli Certified Consultant -ADSM/TSM eServer Systems Expert -pSeries HACMP AIX, HACMP, Storage, TSM Consultant Cell (831) 595-3962 [EMAIL PROTECTED] -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of Andy Carlson Sent: Thursday, January 09, 2003 11:09 AM To: [EMAIL PROTECTED] Subject: Re: TSM Disk Pool Management We have given this a little bit of thought also. You would not need to use type=file - just enlarge your current disk pool. Expire will age the files out of there. The only thing to watch, is for it to be getting full, and more disk needs to be added. Andy Carlson|\ _,,,---,,_ Senior Technical Specialist ZZZzz /,`.-'`'-. ;-;;,_ BJC Health Care|,4- ) )-,_. ,\ ( `'-' St. Louis, Missouri '---''(_/--' `-'\_) Cat Pics: http://andyc.dyndns.org/animal.html On Thu, 9 Jan 2003, Hokanson, Mark wrote: We are considering creating an extremely large TSM disk storage pool (IE: 1-10TB). The goal being to eliminate going to tape. Does anyone have any really BIG disk pools? Are there tools available for managing large TSM disk pools over time. (IE: Reclamation, Aging Data, etc) The documentation from Tivoli suggests that we need to set it up as a device type=FILE. What are the drawbacks using this approach? Is performance dramatically impacted? etc... Thanks in advance, Mark Hokanson Thomson Legal Regulatory
Re: TSM Disk Pool Management
Yes, if you manually move it from one volume to another it will defrag. But that is a manual process. If you setup a reclamation threshold on a FILE disk pool, reclamation occurs automatically. -- Joshua S. Bassi IBM Certified - AIX 4/5L, SAN, Shark Tivoli Certified Consultant -ADSM/TSM eServer Systems Expert -pSeries HACMP AIX, HACMP, Storage, TSM Consultant Cell (831) 595-3962 [EMAIL PROTECTED] -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of Salak Juraj Sent: Thursday, January 09, 2003 11:53 AM To: [EMAIL PROTECTED] Subject: Re: TSM Disk Pool Management would occasional move data (from disk to disk) not resolve this fragmentation issue? regards juraj Salak -Original Message- From: Joshua Bassi [mailto:[EMAIL PROTECTED]] Sent: Thursday, January 09, 2003 8:17 PM To: [EMAIL PROTECTED] Subject: Re: TSM Disk Pool Management Unfortunately disk pools with a device class of DISK get fragmented and will incur a higher overhead penalty the longer they exist (without data moving off to tape). I had a customer try this configuration and it ended up blowing up in their face. -- Joshua S. Bassi IBM Certified - AIX 4/5L, SAN, Shark Tivoli Certified Consultant -ADSM/TSM eServer Systems Expert -pSeries HACMP AIX, HACMP, Storage, TSM Consultant Cell (831) 595-3962 [EMAIL PROTECTED] -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of Andy Carlson Sent: Thursday, January 09, 2003 11:09 AM To: [EMAIL PROTECTED] Subject: Re: TSM Disk Pool Management We have given this a little bit of thought also. You would not need to use type=file - just enlarge your current disk pool. Expire will age the files out of there. The only thing to watch, is for it to be getting full, and more disk needs to be added. Andy Carlson|\ _,,,---,,_ Senior Technical Specialist ZZZzz /,`.-'`'-. ;-;;,_ BJC Health Care|,4- ) )-,_. ,\ ( `'-' St. Louis, Missouri '---''(_/--' `-'\_) Cat Pics: http://andyc.dyndns.org/animal.html On Thu, 9 Jan 2003, Hokanson, Mark wrote: We are considering creating an extremely large TSM disk storage pool (IE: 1-10TB). The goal being to eliminate going to tape. Does anyone have any really BIG disk pools? Are there tools available for managing large TSM disk pools over time. (IE: Reclamation, Aging Data, etc) The documentation from Tivoli suggests that we need to set it up as a device type=FILE. What are the drawbacks using this approach? Is performance dramatically impacted? etc... Thanks in advance, Mark Hokanson Thomson Legal Regulatory
Re: TSM Disk Pool Management
Storage pools can be type random ( disk). We still need to migrate to cartridge but we have about 13 16GB disk areas set up and allocated to various storage pools as the primary pools which migrate to tape. There's no reason, with sufficient space, that you could not hold your backups on disk, but if you lose the disk you lose the backups. [EMAIL PROTECTED] 01/09/03 02:52PM would occasional move data (from disk to disk) not resolve this fragmentation issue? regards juraj Salak -Original Message- From: Joshua Bassi [mailto:[EMAIL PROTECTED]] Sent: Thursday, January 09, 2003 8:17 PM To: [EMAIL PROTECTED] Subject: Re: TSM Disk Pool Management Unfortunately disk pools with a device class of DISK get fragmented and will incur a higher overhead penalty the longer they exist (without data moving off to tape). I had a customer try this configuration and it ended up blowing up in their face. -- Joshua S. Bassi IBM Certified - AIX 4/5L, SAN, Shark Tivoli Certified Consultant -ADSM/TSM eServer Systems Expert -pSeries HACMP AIX, HACMP, Storage, TSM Consultant Cell (831) 595-3962 [EMAIL PROTECTED] -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of Andy Carlson Sent: Thursday, January 09, 2003 11:09 AM To: [EMAIL PROTECTED] Subject: Re: TSM Disk Pool Management We have given this a little bit of thought also. You would not need to use type=file - just enlarge your current disk pool. Expire will age the files out of there. The only thing to watch, is for it to be getting full, and more disk needs to be added. Andy Carlson|\ _,,,---,,_ Senior Technical Specialist ZZZzz /,`.-'`'-. ;-;;,_ BJC Health Care|,4- ) )-,_. ,\ ( `'-' St. Louis, Missouri '---''(_/--' `-'\_) Cat Pics: http://andyc.dyndns.org/animal.html On Thu, 9 Jan 2003, Hokanson, Mark wrote: We are considering creating an extremely large TSM disk storage pool (IE: 1-10TB). The goal being to eliminate going to tape. Does anyone have any really BIG disk pools? Are there tools available for managing large TSM disk pools over time. (IE: Reclamation, Aging Data, etc) The documentation from Tivoli suggests that we need to set it up as a device type=FILE. What are the drawbacks using this approach? Is performance dramatically impacted? etc... Thanks in advance, Mark Hokanson Thomson Legal Regulatory
Re: TSM Disk Pool Management
Joshua , TSM 4.2.1 Server . Ur help in this regard is highly appreciated. Client Ver 4.2.2. I am facing a very odd problem with TSM. The TSM Server is running on a AIX operating system. The O/S Level on the Operating System is 4.3.3. The client windows 2000 was upgraded from 4.1 to 4.2.1 on the tsm side and as 4.2.2 does have Unicode filespace , the old filespace had to be renamed on the TSM Server , now once I renamed it , I am backing up all the other filespace but the only thing which TSM Server comes without backing up is the system object filespace. It gives this error on the client side:Since the Filespace for System Object could not be renamed i removed it and not i am not getting this System Object backed up, all other filespaces of this client is backing up. The TSM data base says J1P303(nodename) is WinNT 5.00, TSM client Version 4, Release 2, Level 2.0, and J1P304(nodename) is WinNT 5.00, TSM client Version 4, Release 1, Level 2.0. ANS1228E: 01/07/2003 01:58:55 fsCheckAdd: unable to update filespace on server. There is nothing else being backed up during this schedule for this node. Joshua Bassi [EMAIL PROTECTED] wrote:Yes, if you manually move it from one volume to another it will defrag. But that is a manual process. If you setup a reclamation threshold on a FILE disk pool, reclamation occurs automatically. -- Joshua S. Bassi IBM Certified - AIX 4/5L, SAN, Shark Tivoli Certified Consultant -ADSM/TSM eServer Systems Expert -pSeries HACMP AIX, HACMP, Storage, TSM Consultant Cell (831) 595-3962 [EMAIL PROTECTED] -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of Salak Juraj Sent: Thursday, January 09, 2003 11:53 AM To: [EMAIL PROTECTED] Subject: Re: TSM Disk Pool Management would occasional move data (from disk to disk) not resolve this fragmentation issue? regards juraj Salak -Original Message- From: Joshua Bassi [mailto:[EMAIL PROTECTED]] Sent: Thursday, January 09, 2003 8:17 PM To: [EMAIL PROTECTED] Subject: Re: TSM Disk Pool Management Unfortunately disk pools with a device class of DISK get fragmented and will incur a higher overhead penalty the longer they exist (without data moving off to tape). I had a customer try this configuration and it ended up blowing up in their face. -- Joshua S. Bassi IBM Certified - AIX 4/5L, SAN, Shark Tivoli Certified Consultant -ADSM/TSM eServer Systems Expert -pSeries HACMP AIX, HACMP, Storage, TSM Consultant Cell (831) 595-3962 [EMAIL PROTECTED] -Original Message- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of Andy Carlson Sent: Thursday, January 09, 2003 11:09 AM To: [EMAIL PROTECTED] Subject: Re: TSM Disk Pool Management We have given this a little bit of thought also. You would not need to use type=file - just enlarge your current disk pool. Expire will age the files out of there. The only thing to watch, is for it to be getting full, and more disk needs to be added. Andy Carlson |\ _,,,---,,_ Senior Technical Specialist ZZZzz /,`.-'`' -. ;-;;,_ BJC Health Care |,4- ) )-,_. ,\ ( `'-' St. Louis, Missouri '---''(_/--' `-'\_) Cat Pics: http://andyc.dyndns.org/animal.html On Thu, 9 Jan 2003, Hokanson, Mark wrote: We are considering creating an extremely large TSM disk storage pool (IE: 1-10TB). The goal being to eliminate going to tape. Does anyone have any really BIG disk pools? Are there tools available for managing large TSM disk pools over time. (IE: Reclamation, Aging Data, etc) The documentation from Tivoli suggests that we need to set it up as a device type=FILE. What are the drawbacks using this approach? Is performance dramatically impacted? etc... Thanks in advance, Mark Hokanson Thomson Legal Regulatory - Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now
