Increase in DEDUP RATE after migration. Why?

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i had old fileserver, win2012r2, 3 tb volume dedup enabled , average rate of dedup 49%-52% on tha last 3 years. in 2016, free space of volume going down , in january had 10% freespace , yesterday less 1% of free space on old file server last week

we bought  a new fileserver, win2012r2, 10tb volume , i´ve migrated 5.5 million of files week

now dedups saving rates 72%!!!!!!!!

if files same in both volumes, how saving rate grown much?

maybe because there more disk space avalable? 

what expecting same saving rate both servers, because set of files , folders same. after week preparing migration, copying files 2 weeks ago in full mode , in last 5 days doing incremental copies, why saving rate higher earlier?


hi kayzersoze,

thanks feedback.

not sure if it's bug. try optimize deduplication jobs , check results. if still shows high, maybe bug, , might need consider to contact microsoft customer support services (css) dedicated support professional can on issue ( confirm if it's bug)

to obtain phone numbers specific technology request please take @ web site listed below.
https://www.microsoft.com/en-us/worldwide.aspx

best regards,

mary

please remember mark replies answers if , unmark them if provide no help. if have feedback technet subscriber support, contact tnmff@microsoft.com.



Windows Server  >  File Services and Storage



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