Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
If you have Data Domain and want to get more granular information on
compression, in addition to running “ost lsu show compression “ or “filesys
show compression” from the Data Domain itself, you can also run “filesys show
compression” with additional arguments “[filename] [last n {hours | days}]”,
where a wildcard such as * can be used within the filename.
“filesys show compression /backup/ost//*” produces a report that
contains a line for every image fragment that looks like the following, where
“bytes” is actual size of backup, “g_comp” is size on Data Domain after global
compression (dedupe), “l_comp” is size on Data Domain after local compression
(i.e. LZ compression after dedupe) and “bytes/storage_used” is the compression
ratio, followed by a summary with totals.
/backup/ost//__:1300250930::4:1:::
mtime: 1300264487182774391, bytes: 4,577,820,672, g_comp: 380,239,733, l_comp:
109,514,404, meta-data: 1,164,084, bytes/storage_used: 41.4
Update the SSH Authorized Keys file on the Data Domain (using “adminaccess add
ssh-keys” per Data Domain command reference guide) so you aren’t constantly
prompted for a password, and a script like the following ran from a Media
Server would produce a space delimited file with client, compression and size
on Data Domain (after dedupe and compression) that can be easily opened and
manipulated in Excel.
for client in `ssh sysadmin@ "filesys show compression
/backup/ost//*"|awk -F\/ '{print $5}'|awk -F_ '{print $1}'|sort -u`;
do ssh sysadmin@ "filesys show compression
/backup/ost//$client*"|awk '{if ($1 == "Total") printf client" "$5;
else if ($1 == "Locally") print " "$4}' client=$client
>>/var/tmp/.`date +%m%d%y`.log; done
From: veritas-bu-boun...@mailman.eng.auburn.edu
[mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of
rusty.ma...@sungard.com
Sent: Friday, April 22, 2011 4:21 PM
To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU
Cc: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU; veritas-bu-boun...@mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
You will get little to no dedupe if your DBA or DB agent performs any
compression or encryption on the db backup before it gets onto the DD. Always
note, what you will get and what someone else will get will always differ
somehow, so take the below with a grain of salt.
I have been seeing between 18 and 20 times compression for an environment that
is made up of about 50 VMs and has several DB servers. I can't give you numbers
more granular than that because we are using only one LSU.
Rusty Major, MCSE, BCFP, VCS ▪ Sr. Storage Engineer ▪ SunGard Availability
Services ▪ 757 N. Eldridge Suite 200, Houston TX 77079 ▪ 281-584-4693
Keeping People and Information Connected® ▪ http://availability.sungard.com/
P Think before you print
CONFIDENTIALITY: This e-mail (including any attachments) may contain
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notify the sender and delete this e-mail from your system.
sandesh
Sent by:
04/22/2011 03:11 PM
Please respond to
To
cc
Subject
[Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
Thanks rhugga
I also have a quick question to all experts on dedup ratio that you see on
database backup, for e.g. SQL, DB2 & Oracle.
What is the usual ratio you see with database backups using native application
backup utilites or using NetBackup Agents? Does it make any difference do it?
Suppose if DBA's generates 1TB of SQL native database backup flat files for a
given server and if I back up flat files using NetBakcup n keep it for 5 weeks
essentially backing up 30TB of data then how much compression one would see and
what factors does it depend on.?
Thanks.
+--
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Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
We are aware of filesperset=1 being better but we opted for faster backups over compression when we started using DD. We are planning to implement incremental merge backups for oracle shortly which requires filesperset=1. Our first backup using this configuration will be a little painful but incrementals forever after that will greatly speed up our oracle backups. Sent from my HTC on the Now Network from Sprint! - Reply message - From: "smpt" Date: Sun, Apr 24, 2011 02:36 Subject: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup To: "'Mark Glazerman'" , "VERITAS-BU@MAILMAN.ENG.AUBURN.EDU" Are you using fileperset=1 at rman script? Netbackup by default is using fileperset=5 which is not good for deduplication -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Mark Glazerman Sent: Sunday, April 24, 2011 7:25 AM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup Sandesh, I took the following numbers off of our dd670 this evening. Oracle (10g) is being backed up by RMAN using the oracle client for NBU 7.0. We backup all filesystems (Data, db, arch and redo) into the same LSU. SQL2008 using the native SQL backup feature and dumps straight to the data domain via CIFS. In our Oracle LSU we're getting 14.8x with a retention of 7 days (compression normally goes up the longer you keep the data). On SQL 2008 direct dumps we're getting 32.6x with a retention of 1 month. Someone else mentioned virtual environments. We use Hyper-V and get 25.8x with a retention of 1 month. Mark Glazerman Desk: 314-889-8282 Cell: 618-520-3401 please don't print this e-mail unless you really need to -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of sandesh Sent: Friday, April 22, 2011 3:10 PM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup Thanks rhugga I also have a quick question to all experts on dedup ratio that you see on database backup, for e.g. SQL, DB2 & Oracle. What is the usual ratio you see with database backups using native application backup utilites or using NetBackup Agents? Does it make any difference do it? Suppose if DBA's generates 1TB of SQL native database backup flat files for a given server and if I back up flat files using NetBakcup n keep it for 5 weeks essentially backing up 30TB of data then how much compression one would see and what factors does it depend on.? Thanks. +-- |This was sent by sandesh@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
Are you using fileperset=1 at rman script? Netbackup by default is using fileperset=5 which is not good for deduplication -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Mark Glazerman Sent: Sunday, April 24, 2011 7:25 AM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup Sandesh, I took the following numbers off of our dd670 this evening. Oracle (10g) is being backed up by RMAN using the oracle client for NBU 7.0. We backup all filesystems (Data, db, arch and redo) into the same LSU. SQL2008 using the native SQL backup feature and dumps straight to the data domain via CIFS. In our Oracle LSU we're getting 14.8x with a retention of 7 days (compression normally goes up the longer you keep the data). On SQL 2008 direct dumps we're getting 32.6x with a retention of 1 month. Someone else mentioned virtual environments. We use Hyper-V and get 25.8x with a retention of 1 month. Mark Glazerman Desk: 314-889-8282 Cell: 618-520-3401 please don't print this e-mail unless you really need to -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of sandesh Sent: Friday, April 22, 2011 3:10 PM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup Thanks rhugga I also have a quick question to all experts on dedup ratio that you see on database backup, for e.g. SQL, DB2 & Oracle. What is the usual ratio you see with database backups using native application backup utilites or using NetBackup Agents? Does it make any difference do it? Suppose if DBA's generates 1TB of SQL native database backup flat files for a given server and if I back up flat files using NetBakcup n keep it for 5 weeks essentially backing up 30TB of data then how much compression one would see and what factors does it depend on.? Thanks. +-- |This was sent by sandesh@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
Sandesh, I took the following numbers off of our dd670 this evening. Oracle (10g) is being backed up by RMAN using the oracle client for NBU 7.0. We backup all filesystems (Data, db, arch and redo) into the same LSU. SQL2008 using the native SQL backup feature and dumps straight to the data domain via CIFS. In our Oracle LSU we're getting 14.8x with a retention of 7 days (compression normally goes up the longer you keep the data). On SQL 2008 direct dumps we're getting 32.6x with a retention of 1 month. Someone else mentioned virtual environments. We use Hyper-V and get 25.8x with a retention of 1 month. Mark Glazerman Desk: 314-889-8282 Cell: 618-520-3401 please don't print this e-mail unless you really need to -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of sandesh Sent: Friday, April 22, 2011 3:10 PM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup Thanks rhugga I also have a quick question to all experts on dedup ratio that you see on database backup, for e.g. SQL, DB2 & Oracle. What is the usual ratio you see with database backups using native application backup utilites or using NetBackup Agents? Does it make any difference do it? Suppose if DBA's generates 1TB of SQL native database backup flat files for a given server and if I back up flat files using NetBakcup n keep it for 5 weeks essentially backing up 30TB of data then how much compression one would see and what factors does it depend on.? Thanks. +-- |This was sent by sandesh@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
Whether doing duplication within NetBackup or using OST with something like Data Domain, this is a good read if using Oracle RMAN... http://www.symantec.com/business/support/index?page=content&id=DOC3534 -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of sandesh Sent: Friday, April 22, 2011 4:10 PM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup Thanks rhugga I also have a quick question to all experts on dedup ratio that you see on database backup, for e.g. SQL, DB2 & Oracle. What is the usual ratio you see with database backups using native application backup utilites or using NetBackup Agents? Does it make any difference do it? Suppose if DBA's generates 1TB of SQL native database backup flat files for a given server and if I back up flat files using NetBakcup n keep it for 5 weeks essentially backing up 30TB of data then how much compression one would see and what factors does it depend on.? Thanks. +-- |This was sent by sandesh@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu This E-mail and any of its attachments may contain Time Warner Cable proprietary information, which is privileged, confidential, or subject to copyright belonging to Time Warner Cable. This E-mail is intended solely for the use of the individual or entity to which it is addressed. If you are not the intended recipient of this E-mail, you are hereby notified that any dissemination, distribution, copying, or action taken in relation to the contents of and attachments to this E-mail is strictly prohibited and may be unlawful. If you have received this E-mail in error, please notify the sender immediately and permanently delete the original and any copy of this E-mail and any printout. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
You will get little to no dedupe if your DBA or DB agent performs any compression or encryption on the db backup before it gets onto the DD. Always note, what you will get and what someone else will get will always differ somehow, so take the below with a grain of salt. I have been seeing between 18 and 20 times compression for an environment that is made up of about 50 VMs and has several DB servers. I can't give you numbers more granular than that because we are using only one LSU. Rusty Major, MCSE, BCFP, VCS ▪ Sr. Storage Engineer ▪ SunGard Availability Services ▪ 757 N. Eldridge Suite 200, Houston TX 77079 ▪ 281-584-4693 Keeping People and Information Connected® ▪ http://availability.sungard.com/ P Think before you print CONFIDENTIALITY: This e-mail (including any attachments) may contain confidential, proprietary and privileged information, and unauthorized disclosure or use is prohibited. If you received this e-mail in error, please notify the sender and delete this e-mail from your system. sandesh Sent by: 04/22/2011 03:11 PM Please respond to To cc Subject [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup Thanks rhugga I also have a quick question to all experts on dedup ratio that you see on database backup, for e.g. SQL, DB2 & Oracle. What is the usual ratio you see with database backups using native application backup utilites or using NetBackup Agents? Does it make any difference do it? Suppose if DBA's generates 1TB of SQL native database backup flat files for a given server and if I back up flat files using NetBakcup n keep it for 5 weeks essentially backing up 30TB of data then how much compression one would see and what factors does it depend on.? Thanks. +-- |This was sent by sandesh@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
Just a quick response to one of the earlier posts regarding LSU’s and multi-domain NBU environments. OST and Data Domain does support deployment into NBU environments where there is more than one Netbackup domain. The OST admin guide states that you should only have one LSU (Logical storage unit) per Netbackup Domain but that each data Domain appliance can have up to 100 LSU’s which would in theory support up to 100 Netbackup domains. It does say that multiple LSU’s can cause issues with some of the advanced Netbackup features such as media server load balancing but it is a recommended best practice when deploying into multi-domain netbackup environments. http://www.emc.com/collateral/software/white-papers/h7296-data-domain-boost-openstorage-wp.pdf Thanks, Mark Glazerman Desk: 314-889-8282 Cell: 618-520-3401 P please don't print this e-mail unless you really need to From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of rusty.ma...@sungard.com Sent: Thursday, April 14, 2011 1:48 PM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Cc: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU; veritas-bu-boun...@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup I wouldn't recommend a VTL with NBU at all as NBU works extremely well using Disk Pools/Disk Staging Storage Units. Making your disk look like a bunch of tape drives just adds more management and complexity and defeats the purpose of disk, IMO. On a side note, because SLPs and OST work together to get the replication completed, you will not need the replication option licensed on the DD. It is very easy to setup both the DD and NBU to utilize the DD and get images replicating. Plan on waiting a while for the first images to replicate if you have a small link. I made a mistake setting up my first DD Storage Server w/in NBU and used the IP address as the name of the Storage Server. The Storage Server name is tied to the Disk Pool, which is tied to the SLP, which is tied to the images, so it caused a situation where I had to wait for the old images to be cleaned up before I could remove it. Something to think about is what you are going to do with the images on the remote DD once they are on the other side. Just having the images on a DD at a remote location is only part of the way to being able to do any recovery. Rusty Major, MCSE, BCFP, VCS ▪ Sr. Storage Engineer ▪ SunGard Availability Services ▪ 757 N. Eldridge Suite 200, Houston TX 77079 ▪ 281-584-4693 Keeping People and Information Connected® ▪ http://availability.sungard.com/ <http://availability.sungard.com/> P Think before you print CONFIDENTIALITY: This e-mail (including any attachments) may contain confidential, proprietary and privileged information, and unauthorized disclosure or use is prohibited. If you received this e-mail in error, please notify the sender and delete this e-mail from your system. sandesh Sent by: 04/14/2011 10:03 AM Please respond to To cc Subject [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup We are in the early stages of implementing EMC Data Domain dedupe appliance and use Symantec NetBackup. I've a couple of questions about it for the experts. Plan is to have a DD appliance in 1 location and replicate data to another DD appliance in another location. Plan is also to generate a tape copy for long term archival at primary location. 1.OST & VTL are both being discussed. Which option is most favorable in the industry? Are there any specific advantages that can make or break things? 2.VTL supports LTO3 drives at the most. Does this mean that we need to have LTO3 physical tape drives for duplicate copy or will LTO5 drives work? Thanks in advance. +-- |This was sent by sandesh@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu <http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu> ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
I wouldn't recommend a VTL with NBU at all as NBU works extremely well using Disk Pools/Disk Staging Storage Units. Making your disk look like a bunch of tape drives just adds more management and complexity and defeats the purpose of disk, IMO. On a side note, because SLPs and OST work together to get the replication completed, you will not need the replication option licensed on the DD. It is very easy to setup both the DD and NBU to utilize the DD and get images replicating. Plan on waiting a while for the first images to replicate if you have a small link. I made a mistake setting up my first DD Storage Server w/in NBU and used the IP address as the name of the Storage Server. The Storage Server name is tied to the Disk Pool, which is tied to the SLP, which is tied to the images, so it caused a situation where I had to wait for the old images to be cleaned up before I could remove it. Something to think about is what you are going to do with the images on the remote DD once they are on the other side. Just having the images on a DD at a remote location is only part of the way to being able to do any recovery. Rusty Major, MCSE, BCFP, VCS ▪ Sr. Storage Engineer ▪ SunGard Availability Services ▪ 757 N. Eldridge Suite 200, Houston TX 77079 ▪ 281-584-4693 Keeping People and Information Connected® ▪ http://availability.sungard.com/ P Think before you print CONFIDENTIALITY: This e-mail (including any attachments) may contain confidential, proprietary and privileged information, and unauthorized disclosure or use is prohibited. If you received this e-mail in error, please notify the sender and delete this e-mail from your system. sandesh Sent by: 04/14/2011 10:03 AM Please respond to To cc Subject [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup We are in the early stages of implementing EMC Data Domain dedupe appliance and use Symantec NetBackup. I've a couple of questions about it for the experts. Plan is to have a DD appliance in 1 location and replicate data to another DD appliance in another location. Plan is also to generate a tape copy for long term archival at primary location. 1.OST & VTL are both being discussed. Which option is most favorable in the industry? Are there any specific advantages that can make or break things? 2.VTL supports LTO3 drives at the most. Does this mean that we need to have LTO3 physical tape drives for duplicate copy or will LTO5 drives work? Thanks in advance. +-- |This was sent by sandesh@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
The restriction we found when we looked into this in 2008 was that the DD only supported one 'LSU'. That meant that a single DD appliance could only be used by a single NetBackup domain. We wanted to have few appliances and many domains, which PureDisk (and now the Symantec NetBackup 5000) can do. I know that the number of LSUs supported has gone up, but I believe that there is still more of a concept of the DD 'belonging' to a domain than with PureDisk. Your EMC SE will be able to correct anything I say that is now wrong! I have to admit that we've adopted neither and still backup to LTO tape. That was more because of the difficulty in creating a cost saving to pay for the hardware than any technical deficiency of either. Another factor I think is that with OST the NetBackup domain knows about the duplicates. With VTL I believe, and certainly if using the DD as a NAS BasicDisk and letting it manage its own replication, NetBackup has no idea that the replicas exist. I'd suggest you check but it may be that if you duplicate a VTC you get 2 with the same 'barcode'. I would advise using OST. I also think DD have invested a lot more effort in the non-VTL features over the past few years. William D L Brown Ext Tel: +44 1438 766162 Fax +44 1438 312767 -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of sandesh Sent: 14 April 2011 15:38 To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup We are in the early stages of implementing EMC Data Domain dedupe appliance and use Symantec NetBackup. I've a couple of questions about it for the experts. Plan is to have a DD appliance in 1 location and replicate data to another DD appliance in another location. Plan is also to generate a tape copy for long term archival at primary location. 1.OST & VTL are both being discussed. Which option is most favorable in the industry? Are there any specific advantages that can make or break things? 2.VTL supports LTO3 drives at the most. Does this mean that we need to have LTO3 physical tape drives for duplicate copy or will LTO5 drives work? Thanks in advance. +-- |This was sent by sandesh@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu This e-mail was sent by GlaxoSmithKline Services Unlimited (registered in England and Wales No. 1047315), which is a member of the GlaxoSmithKline group of companies. The registered address of GlaxoSmithKline Services Unlimited is 980 Great West Road, Brentford, Middlesex TW8 9GS. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
I just checked with my DD SE and you do not need to have your DD appliance setup as a VTL to be able to duplicate to tape using an SLP. My original post was correct, backup destination will be DD#1, duplicate destinations inside the same SLP will be DD#2 and your tape drive(s). Mark Glazerman Desk: 314-889-8282 Cell: 618-520-3401 please don't print this e-mail unless you really need to -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of sandesh Sent: Thursday, April 14, 2011 9:38 AM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup We are in the early stages of implementing EMC Data Domain dedupe appliance and use Symantec NetBackup. I've a couple of questions about it for the experts. Plan is to have a DD appliance in 1 location and replicate data to another DD appliance in another location. Plan is also to generate a tape copy for long term archival at primary location. 1.OST & VTL are both being discussed. Which option is most favorable in the industry? Are there any specific advantages that can make or break things? 2.VTL supports LTO3 drives at the most. Does this mean that we need to have LTO3 physical tape drives for duplicate copy or will LTO5 drives work? Thanks in advance. +-- |This was sent by sandesh@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
Apologies, SLP is a storage lifecycle policy, not process. I was typing faster than I was thinking ! Mark Glazerman Desk: 314-889-8282 Cell: 618-520-3401 please don't print this e-mail unless you really need to -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Mark Glazerman Sent: Thursday, April 14, 2011 10:29 AM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup The OST plugin will help you with the offsite copy to your duplicate DD appliance because the use of optimized duplication, available when using OST and NBU, reduces the bandwidth used to duplicate images, speeding up the duplication process. Using an SLP (Storage Lifecycle Process) to manage your duplications should allow you to specify a backup destination (in your case your local DD appliance) followed by two duplication targets (one being your 2nd dd appliance and one being a local tape drive). We've never used the VTL option so I'm not sure if you need to have this configured in order to be able to duplicate to tape from a DD appliance. Mark Glazerman Desk: 314-889-8282 Cell: 618-520-3401 please don't print this e-mail unless you really need to -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of sandesh Sent: Thursday, April 14, 2011 9:38 AM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup We are in the early stages of implementing EMC Data Domain dedupe appliance and use Symantec NetBackup. I've a couple of questions about it for the experts. Plan is to have a DD appliance in 1 location and replicate data to another DD appliance in another location. Plan is also to generate a tape copy for long term archival at primary location. 1.OST & VTL are both being discussed. Which option is most favorable in the industry? Are there any specific advantages that can make or break things? 2.VTL supports LTO3 drives at the most. Does this mean that we need to have LTO3 physical tape drives for duplicate copy or will LTO5 drives work? Thanks in advance. +-- |This was sent by sandesh@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
The OST plugin will help you with the offsite copy to your duplicate DD appliance because the use of optimized duplication, available when using OST and NBU, reduces the bandwidth used to duplicate images, speeding up the duplication process. Using an SLP (Storage Lifecycle Process) to manage your duplications should allow you to specify a backup destination (in your case your local DD appliance) followed by two duplication targets (one being your 2nd dd appliance and one being a local tape drive). We've never used the VTL option so I'm not sure if you need to have this configured in order to be able to duplicate to tape from a DD appliance. Mark Glazerman Desk: 314-889-8282 Cell: 618-520-3401 please don't print this e-mail unless you really need to -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of sandesh Sent: Thursday, April 14, 2011 9:38 AM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup We are in the early stages of implementing EMC Data Domain dedupe appliance and use Symantec NetBackup. I've a couple of questions about it for the experts. Plan is to have a DD appliance in 1 location and replicate data to another DD appliance in another location. Plan is also to generate a tape copy for long term archival at primary location. 1.OST & VTL are both being discussed. Which option is most favorable in the industry? Are there any specific advantages that can make or break things? 2.VTL supports LTO3 drives at the most. Does this mean that we need to have LTO3 physical tape drives for duplicate copy or will LTO5 drives work? Thanks in advance. +-- |This was sent by sandesh@gmail.com via Backup Central. |Forward SPAM to ab...@backupcentral.com. +-- ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
Hello Sandesh
We have 4 DataDomain systems two at each of our main sites. We replicate
between both sites. We are using the OST option with Storage Lifecycle
Policies. we are currently running Netbackup 6.5.6. It is running very
well. We do not use the VTL option. The only problem is that we have
occasional "83" errors on some of the SLP policies due to a timing problem
when connecting to the DD unit with the OST plug in, however when the
policy automatically re-runs is is fine, we do not have any missing
replicated copies. We are awaiting a fix from DataDomain which should
take care of the problem. I would recommend this option instead of VTL.
--
Carl Stehman
Distributed Services
Pepcoholdings, Inc.
701 Ninth St NW
Washington DC 20068
Off: 202-331-6619
Cell: 301-275-9909
From: sandesh
To: VERITAS-BU@mailman.eng.auburn.edu
Date: 04/14/2011 11:03 AM
Subject:[Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
Sent by:veritas-bu-boun...@mailman.eng.auburn.edu
We are in the early stages of implementing EMC Data Domain dedupe
appliance and use Symantec NetBackup. I've a couple of questions about it
for the experts.
Plan is to have a DD appliance in 1 location and replicate data to another
DD appliance in another location. Plan is also to generate a tape copy for
long term archival at primary location.
1.OST & VTL are both being discussed. Which option is most favorable in
the industry? Are there any specific advantages that can make or break
things?
2.VTL supports LTO3 drives at the most. Does this mean that we need to
have LTO3 physical tape drives for duplicate copy or will LTO5 drives
work?
Thanks in advance.
+--
|This was sent by sandesh@gmail.com via Backup Central.
|Forward SPAM to ab...@backupcentral.com.
+--
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