У Вас должно быть отдельное определение для всего http virtualhosts. Так, для каждого https, соответствие http.
Turns out, that all SCSI-protocol disks are treated as remote storage in SCVMM 2012. The servers that were having issues had the disks exposed to the OS as SAS-type, while the ones that were ok were exposed as SATA or RAID type disks