Re: [Veritas-bu] PureDisk vs. DataDomain
We use both here and have been for over 4 years. We use Data Domain for all of our data center backups and Puredisk (the original appliance based version) for all of our remote file server backups. We did look into Netbackup 7's built in dedupe which uses the puredisk dedupe engine to allow both client side and media server dedupe of backups to any disk storage backends but just couldn't get the compression we get out of the data domain appliances. As an example, our data domains currently house approximately 35 copies of our exchange backups (700GB during a full backup) in 3.8TB of raw. We presented the same amount of storage from a dell equallogic storage array to a netbackup dedupe pool and we couldn't fit 4 copies of that same exchange data. We've done countless reference calls for Data Domain detailing our consideration of Netbackups built in dedupe and our findings. The biggest problem is the Netbackup Puredisk dedupe uses a fixed block algorithm where as the Data Domain's use a variable block algorithm. This allows the Data Domain appliances to generate much greater compression. The backup performance was comparable across both solutions but just like we've seen with our appliance based puredisk environment, restores from the Data Domain's were MUCH faster than from the puredisk storage. Netbackup 7 has improved the restore speeds but it's still not comparable to the 100GB /hour restore speeds we get (simultaneously across multiple platforms / applications) at our Disaster recovery exercises. In our production puredisk environment, if we need to restore a 100GB file server to ship out to a plant it can take up to 10-12 hours to restore. If you have a HUGE pool of money to spend on back end disk then Netbackup 7's built in dedupe may still be an option for you. However, we'd have needed to purchase more than 10X the raw disk capacity of our data domain appliances in order to be able to house the same amount of deduped data that our Data Domain's currently store. As existing Data Domain customers, this was not financially viable and even the lure of a one stop shop for all backup storage was not big enough for us to jump ship after 4+ years as Data Domain users. We started off with two dd430's and later added two dd560's. Now have two DD670's setup in a replication pair and use Storage Lifecycle Policies (SLP's) inside Netbackup coupled with the optional Open Storage (OST) plugin to manage all but a handful of backup policies. The OST plugin lets us make use of the Optimized duplication technology to reduce bandwidth utilization between our main data center and our DR site and the tighter integration with Netbackup gives us additional visibility of both our primary and now also our duplicated images from inside the catalog. Yes... I'm a Data Domain fan but that's not because I'm getting paid to say this stuff. It's because it works flawlessly, has got us out of some real binds and makes my boss look like a rockstar at our twice yearly DR tests. If we'd seen similar numbers from Netbackup then I'd be singing a different tune but for now, Data Domain has my vote. 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 Fred M Sent: Wednesday, February 09, 2011 10:14 PM To: veritas-bu@mailman.eng.auburn.edu Subject: [Veritas-bu] PureDisk vs. DataDomain Hi all, My employer is requesting I evaluate PureDisk and DataDomain for de-duplication. While I can setup a demo of each and get the numbers, and ask the sales guys what makes them great and why their competitors aren't, I can't trust that is nothing more than sales drivel. So, I ask you expert users. Can anyone tell me what their experiences are with DataDomain and PureDisk and why you went with that solution from a technical perspective? You know, the typical pro/con deal. Thanks for the help! ~~Fred~~ ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Backup Archive and Restore taking forever on DR server
Ed, Rusty, Have you noticed if the load on the DNS servers has gone down? I remember building an HPUX master server with thousands of clients. Our master server hammered the DNS server. We ended up configuring a DNS caching server on our own master. It didn't add a lot to the load on the master, and it severely reduced the network traffic to the DNS server and almost eliminated the load on the DNS server. I haven't run with 7.x yet and since we are in process of building out a 7.x Linux master server I was kind of curious to see if this was still an issue with 7. Thanks, Bryan Ed Wilts ewi...@ewilts.org Sent by: veritas-bu-boun...@mailman.eng.auburn.edu 02/09/2011 10:01 PM To rusty.ma...@sungard.com cc NetBackup Mailing List veritas-bu@mailman.eng.auburn.edu Subject Re: [Veritas-bu] Backup Archive and Restore taking forever on DR server On Wed, Feb 9, 2011 at 6:10 PM, rusty.ma...@sungard.com wrote: If this is version 7.0.1, there is a hostname caching 'feature' now in NetBackup (Which I do NOT like, Symantec!!!). It caches the IP for each host configured in NBU and sometimes this can result in the incorrect IP being tied to the hostname. The default TTL for this cached data is one hour, but you can refresh it by running the following command on the Master/Media server(s) and/or clients: bpclntcmd -clear_host_cache So, you could see that even though the name resolution may be fixed in DNS or hosts, NBU may still have it cached. I've heard there's a way to reduce the time this is refreshed, but I don't remember where it's at. The DNS caching behavior is controlled by the 2nd parameter of the master server's VNET_OPTIONS in bp.conf; units are in seconds. The default in 7.0.1 is 1 hour, but we've reduced this to 5 min in our environment without ill effect: VNET_OPTIONS = 120 300 200 40 3 1 30 5 1793 32 0 0 .../Ed ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu BR_ FONT size=2BR DTCC DISCLAIMER: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, please notify us immediately and delete the email and any attachments from your system. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email./FONT___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
[Veritas-bu] Tech Field Day Live Stream from Symantec Headquarters
I am here at Symantec Headquarters for Tech Field Day, where Symantec Execs will be briefing (and be drilled by) 14 bloggers including myself and 13 others. We're going to talk about a number of Symantec products. You can see a live stream of this event here: http://gestaltit.com/field-day/tfd5/ This is the first time they have broadcasted live from Symantec Headquarters. I hope some of you find it useful. +-- |This was sent by wcplis...@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
Re: [Veritas-bu] Backup Archive and Restore taking forever on DR server
On Thu, Feb 10, 2011 at 9:58 AM, Bryan Bahnmiller bbahnmil...@dtcc.comwrote: Ed, Rusty, Have you noticed if the load on the DNS servers has gone down? I remember building an HPUX master server with thousands of clients. Our master server hammered the DNS server. We ended up configuring a DNS caching server on our own master. It didn't add a lot to the load on the master, and it severely reduced the network traffic to the DNS server and almost eliminated the load on the DNS server. We have never seen an issue with high DNS server utilization. .../Ed ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] Tech Field Day Live Stream from Symantec Headquarters
Who is speaking at the moment? Regards, Patrick Whelan VERITAS Certified NetBackup Support Engineer for UNIX. VERITAS Certified NetBackup Support Engineer for Windows. netbac...@whelan-consulting.co.uk -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of cpreston Sent: 10 February 2011 16:19 To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: [Veritas-bu] Tech Field Day Live Stream from Symantec Headquarters I am here at Symantec Headquarters for Tech Field Day, where Symantec Execs will be briefing (and be drilled by) 14 bloggers including myself and 13 others. We're going to talk about a number of Symantec products. You can see a live stream of this event here: http://gestaltit.com/field-day/tfd5/ This is the first time they have broadcasted live from Symantec Headquarters. I hope some of you find it useful. +-- |This was sent by wcplis...@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] Backup Archive and Restore taking forever on DR server
Solaris, Windows, Linux all do some variant of nscd - Name Services Caching Daemon - if you haven't explicitly disabled it for some reason. AIX just added it in OS version 6.1. AIX = 5.3 and HPUX, as you say, you had to setup a caching, fowarding DNS server local on the system to achieve equivalent functionality. -- Jim VandeVegt | Technical Integrator, ETG Physicians Mutual | 2600 Dodge Street | Omaha, NE 68131 402.930.2649 | PhysiciansMutual.comhttp://www.physiciansmutual.com/ | jim.vandev...@physiciansmutual.commailto:jim.vandev...@physiciansmutual.com Insurance for all of us.™ health | life | retirement From: veritas-bu-boun...@mailman.eng.auburn.edu [veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Bryan Bahnmiller [bbahnmil...@dtcc.com] Sent: Thursday, February 10, 2011 09:58 To: Ed Wilts; rusty.ma...@sungard.com; NetBackup Mailing List Subject: Re: [Veritas-bu] Backup Archive and Restore taking forever on DR server Ed, Rusty, Have you noticed if the load on the DNS servers has gone down? I remember building an HPUX master server with thousands of clients. Our master server hammered the DNS server. We ended up configuring a DNS caching server on our own master. It didn't add a lot to the load on the master, and it severely reduced the network traffic to the DNS server and almost eliminated the load on the DNS server. I haven't run with 7.x yet and since we are in process of building out a 7.x Linux master server I was kind of curious to see if this was still an issue with 7. Thanks, Bryan Ed Wilts ewi...@ewilts.org Sent by: veritas-bu-boun...@mailman.eng.auburn.edu 02/09/2011 10:01 PM To rusty.ma...@sungard.com cc NetBackup Mailing List veritas-bu@mailman.eng.auburn.edu Subject Re: [Veritas-bu] Backup Archive and Restore taking forever on DR server On Wed, Feb 9, 2011 at 6:10 PM, rusty.ma...@sungard.commailto:rusty.ma...@sungard.com wrote: If this is version 7.0.1, there is a hostname caching 'feature' now in NetBackup (Which I do NOT like, Symantec!!!). It caches the IP for each host configured in NBU and sometimes this can result in the incorrect IP being tied to the hostname. The default TTL for this cached data is one hour, but you can refresh it by running the following command on the Master/Media server(s) and/or clients: bpclntcmd -clear_host_cache So, you could see that even though the name resolution may be fixed in DNS or hosts, NBU may still have it cached. I've heard there's a way to reduce the time this is refreshed, but I don't remember where it's at. The DNS caching behavior is controlled by the 2nd parameter of the master server's VNET_OPTIONS in bp.conf; units are in seconds. The default in 7.0.1 is 1 hour, but we've reduced this to 5 min in our environment without ill effect: VNET_OPTIONS = 120 300 200 40 3 1 30 5 1793 32 0 0 .../Ed ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu _ DTCC DISCLAIMER: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, please notify us immediately and delete the email and any attachments from your system. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. This message and any attachments are confidential, may contain privileged information, and are intended solely for the recipient named above. If you are not the intended recipient, or a person responsible for delivery to the named recipient, you are notified that any review, distribution, dissemination or copying is prohibited. If you have received this message in error, you should notify the sender by return email and delete the message from your computer system. ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
[Veritas-bu] Migrate Backup Exec to NetBackup
Hi All, I have plan to migrate our Backup Exec 11 to NetBackup 7. Any one of you have an experience to do that? I very appreciate if you share it to me. Thanks. Regards, Moehatdee ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
