About Deduplication in netbackup
We have planned to keep our monthly and yearly backups in to disk. Planning to use netbackup MSDP. Our current backup size is 10TB. Every month full bakcup and 1year retention. My question is first time it will be 10TB and second month will it take dedupe data and keep it for 12months or it will take entire 10TB plus additional changes (say example 200GB changes as every month)10.2TB and keep it for 12 months.If its 10.2 tb means means my total space will be10.2 * 12 = 122.4TB.
Thanks in Advance.
Hi,
Any subsequently backups would only take up a % of space, it doesn't matter if its daily, weekly, or yearly. It is the exactly the same if you put your daily backups on the appliance (mon, tue, wed, thu, fri, sat) and keep it for 2 weeks (which is 12 copies) as if you take a monthly and keep it for 12 months. You just count the copies on the appliance.
My example here is just for illustration. Contact your local Symantec partner, as Marianne said, to do a calculation for you. Different data types get different compression rates, e.g. virtual machine are usually get high dedupe ratio, sharepoint on the otherhand doesnt.