I was able to get 400Mb sustained throughput using 14 146Gb drives in Raid 10 with VMware ESXi 4.1 to a single host. Hard to listen to any complaints considering the relatively low cost of this product. Even 100Mb sustained throughput to a single host should be considered fine at this price level.
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Review 2 for PowerVault MD3220i
What a disaster - VMWARE PERFORMANCE TERRIBLE
PostedDecember 31, 2010
No, I do not recommend this product.
Bought this unit to use as a store for VMware. After a month of fighting with horrible performance, Dell has given up, has no experts, and says it's not supported.
Basically, the unit has 4 ethernet ports, but only 1 is supported with VMware thru MRU. You will max out at 110MB/sec with this unit.
Response from Dell.comBy Lisa Myers, Customer Voice, February 4, 2011
Sorry you are having a problem with your Dell hardware. Our Dell engineering team is aware of this issue with VMware MRU and are in the process of qualifying the Round Robin method that will use all available paths. When the fix/patch is available to the public, it will be available at this location: www.dell.com/MD3200i in the PowerVault MD32xxi Deployment Guide for VMware ESX 4.1