I am seeing the same here is my setup:
1x Supermicro SC846E26-R1200B Chassis
1x Supermicro X8DTH-6F Motherboard
1x Intel Xeon E5620 / 2.4 GHz processor
1x Kingston Memory (3x 4GB) 12 GB Total
10x Seagate Constellation 1 TB SATA Hard Drives
Running ESXi 4.1 then have Nexenta running on SSD Storage device. Nexenta has PCI Passthrough to the SAS Backplane and has 10 Segate SAS 1TB Drives installed running 4 mirrors striped to make up my datastore. 2 of the 1tb drives are mirrored and are shared as a separate datastore being shared to ESXi via NFS for my VM's.
I then installed a windows 7 ultimate VM. Added a iSCSI Drive that had been shared using Nexenta vDev from the 4 mirrored 1 TB drive datastore and ran benchmarks against it using several programs. Crystal Mark is consistently around the 50 MB/s. I feel like I should be much higher than this and can find other posts of people stating they are hitting around 200 MB/s.
Is this typical or am I mssing a setting . Any tips or tweeks. This is all contained inside an all in one box so I hoped for much higher speeds.
pure mirrors or multiple added mirrored vdevs (Raid-10 and better)?
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