mitchellm3 wrote:
Take this for what it is worth. We purchased the 7200c's w/ 10 1.92 TB SSD drives each in order to run our existing VDI environment. We would run about 20,000 IOps using thin provisioning and dedupe. At the time we were running 3.2.1 mu1 with patches. The problem we ran into was that the CPU on the 7200's could not keep up with the dedupe and we would see big latency spikes. When we switched back to just thin things were fine. Since we still wanted the dedupe we rectified it by swapping the heads with 7450's using the same 10 SSDs and are now running fine. We are also now running MU2.
I'd be more concerned about the CPU keeping up than the dedupe software itself. The 7450 and 7440c's have more cores for that reason.
Hi mitchellm3
Hope I'm not hijacking this thread as we are also also experiencing what i believe to be slowness with the 3Par due to deduce, we have just deployed a new 7200 all flash array with 8 x 480 GB Mlc drives and seem to be getting very slow transfer times while migrating data to the 3Par, the Equallogic streaming the data is showing very low IO usage.
Do you think the slow transfer speed is due to Deduplication? strange as we are not seeing any CPU activity via 3Par Management Console just very slow migration of data to the 3Par.
would be interested in opinions.
ta
Gerardo