August 23, 20196 yr Running version 6.7.2. Array consists of four 6TB HDDs, one of which is parity. I created a virtual machine with an 8TB disk. I've already had to destroy a virtual disk when it filled up one of the physical disks because the VM would no longer boot with it attached. For some reason, the share was set to high-water allocation, so I changed the share to most-free. As I fill up the virtual disk, I can already see that it's all being written to one physical disk again. Is it not possible to have a disk image span an array? Thanks
August 23, 20196 yr Community Expert 6 hours ago, toomuchglue said: Running version 6.7.2. Array consists of four 6TB HDDs, one of which is parity. I created a virtual machine with an 8TB disk. I've already had to destroy a virtual disk when it filled up one of the physical disks because the VM would no longer boot with it attached. For some reason, the share was set to high-water allocation, so I changed the share to most-free. As I fill up the virtual disk, I can already see that it's all being written to one physical disk again. Is it not possible to have a disk image span an array? Thanks In Unraid each drive is a self-contained file system. This means individual drives can be read outside the array, but it also means any individual file must fit on a single drive. As a consequence you do not want to set the logical size of a vdisk to exceed the physical size of the drive where it is located as at some point you will end up running out of space as the system tries to increase the physical space used by the vdisk. The only workaround I can think of is to have multiple vdisks located on different drives assigned to the same VM.
August 23, 20196 yr Community Expert Why do you want such a large vdisk anyway? You can access Unraid User Shares from your VMs. The User Shares are folders that can span disks. So, if you just want a storage volume that can span disks, the User Shares can do that just fine. You just can't have a single file that spans disks.
August 24, 20196 yr Author Thanks everyone. That answers a couple other questions I had too. Much appreciated.
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