I have an esxi 5.1 on a 1U server, accessed using vSphere. There are two 160G HDD's inside on RAID1. I'm looking to expand the number of VM's and the required storage is going to exceed this paltry amount of storage. I would like to increase the drive space, but am wondering what is the best course of action. The 1U has two solid XEONs and lots of RAM so I'd like to keep this as the HW resource. If I provision another box full of 1TB HDD's can I access them as an external datastore? Would this be an implementation of iSCSI? Or would it be better to get 2 bigger (2TB+) HDD's and replace the 160GB drives instead?
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