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The PowerVault 775N is one of two units we tested that use Windows SAK as its base operating system. We were a little skeptical of this approach. After all, why buy a NAS if you're just going to load Windows? However, between SAK and the vendor's customization, both the PowerVault and HP's StorageWorks NAS B3000 were good contenders, with some inherent advantages over their Unix variant-based counterparts. The fact that Dell's unit costs about $10,000 less than HP's gave it a big edge--and thus, our Editor's Choice award.
With all that hardware goodness and bus bandwidth, you might think the unit ran away with testing. Almost, but not quite. In CIFS testing, the 775N did well on the linear write tests, but fell down on the linear read tests. However, it did win the NWC CIFS Generalized Custom Test and only lost the CIFS IOps test to the HP unit by a thin margin. On the NFS side, the PowerVault performed predictably poorly, as Windows-based systems often falter on NFS testing. 
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