Drobo-2 USB Speed

Forum History Drobo
1

I copied the data off my 2nd Gen Drobo (connected via USB on a Win7 machine) so I could change the volume size from 2TB to 16TB, since I no longer need WinXP accessibility.

While copying my files to an external hard drive (via USB) I noticed the transfer speed was 12.5 MB/second. I reset the Drobo and began copying the information back and now the transfer speed is a solid 20.8 MB/second.

The other tasks being ran on the computer was identical both times. Is this a normal speed change for being formatted under Win7 vs WinXP?

2

you might find that when you are starting to write to an otherwise empty drobo, it is mirroring the data rather than doing parity - it wont start doing parity until it passes the 50% full mark

which would explain your increased speeds

3

yup, and when you reach 95% or more (97% in my case) it starts to go fairly slow