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Re: [Veritas-bu] EMC Data Domain OST Vs VTL with NetBackup
2011-04-22 16:21:02
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
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Subject
| [Veritas-bu] EMC Data Domain OST
Vs VTL with NetBackup |
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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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