Re: [Veritas-bu] NETBACKUP WITH ENCRYPTION OPTION
On Fri, Aug 7, 2009 at 3:49 PM, Daniel Otto wrote: > When you use NBU client side encryption it removes any repeatable > patterns that the tape drive hardware compression works off. So there is > nothing to compress and so you end up using more tape space. > The only way to get around this issue is to also run with client side > compression since NBU will compress first then encrypt. But it adds even > more delays to the backup time. I would figure a fudge facture of 2-3 > times increase in the backup time an average with both options in play. And this is why people using encryption in a big way buy custom-built appliances (e.g. Decru DataFort). These do compression and encryption at wire speed and don't impact the clients. Doing client-side encryption is probably okay if you have 1 or 2 small clients. Larger environments can use media-server based encryption since your media servers will typically be bigger/better/faster than the clients. Get bigger and you're into something like the DataForts. Get even bigger and you go for something like the Brocade encrypting blade/switch. .../Ed Ed Wilts, RHCE, BCFP, BCSD, SCSP, SCSE ewi...@ewilts.org ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] NETBACKUP WITH ENCRYPTION OPTION
When you use NBU client side encryption it removes any repeatable patterns that the tape drive hardware compression works off. So there is nothing to compress and so you end up using more tape space. The only way to get around this issue is to also run with client side compression since NBU will compress first then encrypt. But it adds even more delays to the backup time. I would figure a fudge facture of 2-3 times increase in the backup time an average with both options in play. Hope this helps. Dan O -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of apatoliya Sent: Friday, August 07, 2009 3:24 PM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: [Veritas-bu] NETBACKUP WITH ENCRYPTION OPTION Thanks for reply But why every time when i was enable encryption the tape usage increased that i know with encryption throughput will degrade somewhat. Is there something i am missing to configure ??? even i open a call with symantec they doesn't having information regarding this issue. +-- |This was sent by apatoli...@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] NETBACKUP WITH ENCRYPTION OPTION
Thanks for reply But why every time when i was enable encryption the tape usage increased that i know with encryption throughput will degrade somewhat. Is there something i am missing to configure ??? even i open a call with symantec they doesn't having information regarding this issue. +-- |This was sent by apatoli...@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] NETBACKUP WITH ENCRYPTION OPTION
On Fri, Aug 07, 2009 at 03:35:14PM -0400, apatoliya wrote: > I never used compression for tapes You disabled it explicitly? It's on by default at the hardware level. Encrypted data is the same size as non-encrypted data. But after encryption the data is incompressible. -- Darren ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
[Veritas-bu] NETBACKUP WITH ENCRYPTION OPTION
Hi I never used compression for tapes +-- |This was sent by apatoli...@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] NETBACKUP WITH ENCRYPTION OPTION
Hello, Unless you also enable client compression when you enable the client side encryption, you lose the tape compression. How much you lose depends on how much compression you had. len -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of apatoliya Sent: Friday, August 07, 2009 3:15 PM To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU Subject: [Veritas-bu] NETBACKUP WITH ENCRYPTION OPTION Hi Does Any one having any Idea how tapes usages will increase after enable the client side encryption ??? Right now I am using Client side Encryption and when i enable that thing my Tape usages increase drastically so i am not confirm how many percentage will increase after enable the encryption I have 6.5.3 solaris X86 master server and itself media server with LTO3 and I m doing 2 inline copy one for offsite and Is that any one to assign encryption to particular copy or specific volume pool either client side encryption or MSEO ?? Any help would be appreciate Thanks in advance guys +-- |This was sent by apatoli...@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] NETBACKUP WITH ENCRYPTION OPTION
Hi Does Any one having any Idea how tapes usages will increase after enable the client side encryption ??? Right now I am using Client side Encryption and when i enable that thing my Tape usages increase drastically so i am not confirm how many percentage will increase after enable the encryption I have 6.5.3 solaris X86 master server and itself media server with LTO3 and I m doing 2 inline copy one for offsite and Is that any one to assign encryption to particular copy or specific volume pool either client side encryption or MSEO ?? Any help would be appreciate Thanks in advance guys +-- |This was sent by apatoli...@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
