Seagate Backup Plus 3TB USB Disconnects from Esxi Host

i have 2 Seagate Backup Plus 3TB USB 3.0 3.5" Desktop Hard Drive STCA3000101 External Drives connected to an Esxi Ver 5.5 U2 host and every week or so the drives will not be seen and i have to power cycle the drives to make them appear in the VM and host. Looking at the reviews on newegg the drives suck. So its probably that both drives are bad. They are only 1.5 years old. Is there anything else i can check to see why the drives are disconnecting and is there a 4TB drive that you can recommend?
noclavAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)Connect With a Mentor VMware and Virtualization ConsultantCommented:
This is to be expected, USB passthrough was never designed to connect USB External Hard Disks to a VM for Backup!

Just because there is USB passthrough does not mean all USB devices will work with ESXi 5.5, USB passthrough to the VM.

see the USB compatibility list here

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1021345

USB passthrough was designed originally soley for USB Software Keys, Security keys or dongles.

I would recommend the use of a Network attached storage device, e.g. NAS rather than USB.

HOW TO: Add and Connect a USB Device to a Virtual Machine, hosted on VMware vSphere Hypervisor ESX 4.1 ESXi 4.1, ESXi 5.0
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noclavAuthor Commented:
I use Gillware Offsite Backup which they use StorageCraft to make a backup image of the VM (server 2012). Storagecraft will not backup to mapped drives so i was thinking of creating an ISCSI target so the OS will see it as a local drive. I was looking at a Synology DiskStation DS214se Diskless System Network Storage with a 3TB drive and was wondering if this method is good or is there a better method.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, Synology DiskStation NAS, are popular with VMware, for iSCSI and NFS access.

Also, as an aside, you can use Google S3 and Glacier "app plugins" with the Synology to backup to Amazon Cloud Storage, for very little money also, giving you cloud backup for next to nothing!

We've actually got a handful of Synology NAS, in use with VMware vSphere, from two, four, eight and 10 disk versions.
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