07-06-2017 01:28 AM - edited 07-06-2017 01:29 AM
Hi there,
we have an issue on windows server 2016. The sever has 3 raid 6 volumes, system, data and backup. After enabling deduplication on the data partition backup speed dropped from 4.2 GB/min to 2.6 GB/min (LTO6). Testing with simple filecopy between data and backup partition don't show such a significant decrease.
The server is under lab conditions, no users connected. The is no third party virus protection or software just windows server 2016, backupexec 16 an 1 TB data for testing.
Any suggestions?
thanks
Andy
07-06-2017 04:24 AM
Hi,
Remember when backing up deduped data it rehydrates. This extends the backup time. It's no different to duplicating backups from an array such as a Data Domain or StoreOnce to tape. Your speed will drop as data is rehydrated during the move to tape.
Thanks!
07-06-2017 04:50 AM
Hello Craig,
thanks for your reply. We expected a lower backup speed because rehydrating but 50% seems to be to much. And why don't we see this drop during simple filecopy from a dedubed volume to no dedubed volume, there rehydrating will also occur.
thanks
Andy