Netgear ReadyNAS as SAN

I'm wondering how bad preformance will be if I send two Dell R610 servers out with a Netgear ReadyNAS 316 with 18TB of space.  I would connect this via ethernet crossover cables to both servers, install vmware esxi 6.0 on the servers and use the ReadyNAS as a shared storage space.  The drives are WD30EZRS: IntelliPower 64MB Cache.  SATA 3.0Gb/s
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cmb991Asked:
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yo_beeDirector of Information TechnologyCommented:
The netgear NAS seems to be geared towards file share data. It is not a SAN by design. Have you spoke to a netgear support tech specialist about this? They would have more insight on his.


Couple things that I would be concerned with are:
1: IOPS load this can handle.
2: no Ten GB capability
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
depends on workload in VMs, and how many disks does a Netgear ReadyNAS 316 have inside, and also what RAID type is used.

You've also got latency in the network connection between Host and Storage.

Is the Netgear ReadyNAS 316 certified for use with ESXi ?

(it is on the list for iSCSI and NFS - I would use in NFS!)

Check the VMware Hardware Compatability Lists HCL here

The VMware Hardware Compatibility List is the detailed lists showing actual vendor devices that are either physically tested or are similar to the devices tested by VMware or VMware partners. Items on the list are tested with VMware products and are known to operate correctly.Devices which are not on the list may function, but will not be supported by VMware.

http://www.vmware.com/go/hcl
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nociSoftware EngineerCommented:
unusual to use cross-cables to connect two server to such a system. Adding a small managed switch might help accessing the NAS with up to 2GBps. (bonded interface / Port Channel)  
it should be doable. The interface should then have separate IP address ranges that don't overlap.
Jumbo frames may help, use CAT-6 or better cables, (not cat-5e... or lower).

SAN actualy means Storage Area network (LAN specific for Storage)  and this used to be the realm of Fibre Channel.
now SAN's also have frontends for filesharing & NAS can do block level IO (iSCSI)  this broder is getting blurry.
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