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6

I think this is doing exactly what you're asking it to. You're throttling the I/O capabilities and profile of your VMs, causing them to perform poorly. Don't do this. Micromanaging resources at the individual VM level can have unintended consequences and will complicate future troubleshooting. My recommendation is to NOT try to outsmart the VMware ...


4

If you can afford it, a centralized storage system is ideal for safely and reliably serving your company's data. That said, check your math- while it's fine to back servers and computers up to a NAS, it's almost never the best choice. Archives are also not optimal for a NAS. Archives and backups are best put on something else like a tape drive or ...


3

For 200TB, yes you want an array. However you're thinking in the wrong direction if you're trying to square off SAN vs. NAS. They're different tools for different jobs. NAS is network accessible - typically delivering NFS or CIFS storage, sometimes iSCSI. (And sometimes FCOE). SAN typically means a fiber channel network providing block storage over SCSI ...


2

The XP is really a rebranded Hitachi USP-V. Performance Advisor is not a Hitachi tool, though, and while it can get some basic numbers, the presets aren't that useful, and there's only so far that tool can take you. There is a performance extraction tool that you can run on Hitachi machines, but the data from it is very hard to parse. It is badly described ...


1

The first thing to note is that you're not actually testing the SAN performance here. Since your IO benchmark is running on the C drive of the virtual machine, which I would guess is a virtual hard drive stored within the file system of one of those 2TB volumes (e.g. a VMDK stored within a VMware VMFS datastore). You have a lot of added layers to the I/O ...


1

I'm pretty sure that you're correct - what RAID scrubbing does is read back your stripes and recalculate your checksums, and in this way check for media errors. So if your array is already handling it, then it's moot. Perhaps to the point where if the NetApp thinks it's got a RAID-0, I'm not sure if it actually can be doing anything - there's nothing ...



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