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Avamar Deduplication concept confusion
Hello,
I have Avamar node in our site. i have been using AVAMAR with a lot of clients in our site.
i have started to take backup from a specific client and backup was taken successfully((for the 1st time)) with the following details
as shown in the above screenshot from Avamar Activity console, Size of backed up data from this client is about 1 TB but the New bytes value percentage is 41% which means that the amount of data added to Avamar Storage by this backup is about 410 GB.
what i have noticed is that the Data protected value shown on Avamar console has changed after this backup from 2.2 TB to 3.2 TB
which means that 1 TB have been added to Avamar Storage
My question is: What is the amount of data added to the storage (the Whole data which is 1 TB) or the new bytes (410 GB) ???
ionthegeek
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March 7th, 2017 13:00
Okay, so it's a bit more complicated than that. This value is an approximation of the size of the daily backup dataset. It's calculated by summing the sizes of the largest backups for each client over the last 30 days. There's a full explanation of how this value is calculated in the following KB article:
http://support.emc.com/kb/171121
It was originally designed as a licensing mechanism. It's not a particularly good measure of how much data is on the system and you probably shouldn't use it for anything important.
ionthegeek
2K Posts
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March 7th, 2017 06:00
The Data Protected field is source data and it's calculated based on sizes before de-duplication. The actual amount of data stored on the server is the new bytes value.
a.gad33
2 Posts
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March 7th, 2017 11:00
but the amount of data uploaded from clients to Avamar since beginning of working with Avamar is much bigger than 3.2 TB shown in the data protected in the screenshot.