02-07-2013 12:23 AM
When i perform backup using SQL Agent, i see "Byte count" (from job history -> Set Detail Information) which is equal to 10 GB, but actual size of databases is 85 GB. Also, i see 85 GB when i luch restore job and open selections. I use SQL 2005, so there is no compression. Backup goes to deduplication folder (no client side deduplication). Actualy i need to understand actual size of transfered data, to properly calculate backup window, i do not see it in Job Logs.
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02-07-2013 04:48 AM
02-07-2013 01:37 AM
Hi Alex,
Read up on what a dedupe backup does. If they byte count on the dedupe folder is 10GB and you can restore the whole SQL DB, then dedupe is editing out everything it should...
Read up on it below:
http://www.symantec.com/business/support/index?page=content&id=TECH129694
Thanks!
02-07-2013 04:48 AM
02-07-2013 04:51 AM
...just what I posted
02-07-2013 04:58 AM
Sorry CraigV, your advises very helpful form me, but not at this time, cause you wrote about Deduplication influence, but in this case no matter are you using deduplication or store your backup on tape, case in tips with storing SQL data. Good luck!
02-07-2013 05:02 AM
What you just said above makes no sense...you mentioned dedupe...if your backup size is smaller then dedupe is working, and I don't know what tape has to do with this but OK. Glad it is sorted out.
02-07-2013 05:21 AM
What you just said above makes no sense...you mentioned dedupe...
Ok i will try to clarify. I mentioned dedup, cause i did not know is there any influence of deduplication, it was only for more complete view of my environment.
...if your backup size is smaller then dedupe is working
Byte count show data which was transferred from client to backup server, so no difference if you using deduplication or not, size will be the same, only exception is client side deduplication in such case you will see only uniq data which was transfered from client. Backup size less than actual database size not cause i am using deduplication, it less cause SQL stores only data, and data less than tablespaces+data+indexes+something else.
and I don't know what tape has to do with this but OK
Sorry that i have confused you with not very good analogy, i just wanted to show that in any case whatever backup storage you use dedup or any else, Byte Count will be the same. Difference will be in "Stored Size"