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using Removable HDD to be VMFS data store ?

Posted on 2014-04-26
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Last Modified: 2014-05-21
Hi People,

How can I present the USB desktop HDD to the HP DL 360 server so that I can use it as test VMFS datastore ?

I also have eSATA connection in the USB HDD casing

here's the server specs: http://www8.hp.com/h20195/v2/GetDocument.aspx?docname=c02171046
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by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 250 total points
ID: 40024812
I'm afraid USB external devices are not supported for a VMFS datastore.

However, SATA and SAS external devices are.

So if your SATA interface is currently supported and is shown as a Storage Adaptor, you should be able to use a device connected to the eSATA Bus.

However, hot plug datastores are not supported, so beware you could have issues mounting or dismounting the datastore.
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by:Senior IT System Engineer
ID: 40024832
Hi Andrew,

The server is HP DL 360 1 RU rack server, the external HDD casing got eSATA and USB 2.0 connector.
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ID: 40024931
It's worth trying if eSATA.
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Expert Comment

by:gheist
ID: 40025177
USB2 has substandard speed compared to eSATA

Only use for USB drives is a boot drive (only 1GB will be used, and VMDKs will go to other disks)
You can trick vmware to consider non-usb sdcards to be vmfs or flash cache storage, but it is absolute no-go with USB
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Gareth Gudger earned 250 total points
ID: 40025290
Don't do it. Aside from pass-through being hit and miss (mostly a miss), USB external drives do not have the I/O to become a VMFS store, even for test/dev purposes.
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