Hi,
You probably have seen similar posts but this one is different. 
I've been searching a lot on the web before posted this.
I have a workstation with 4 phisical disks. 2 SSD disks and 2 machanical disks.
My OS is Windows 7 Pro.
VMware Workstation is 12 Pro (12.5.5 build-5234757)
My problem is:
Im not able to power on virtual machines created on new Plextor SSD specially purchased for running VM's.
The error I see in the log file is the following:
2017-04-08T18:27:19.944+02:00| vmx| I125: DISK: OPEN scsi0:0 'G:\VMs\VMware ESXi 6 (2)\VMware ESXi 6 (2).vmdk' persistent R[]
2017-04-08T18:27:19.944+02:00| vmx| I125: DISKLIB-SPARSE: "G:\VMs\VMware ESXi 6 (2)\VMware ESXi 6 (2)-s001.vmdk" : failed to open (15): Failed to load header.
2017-04-08T18:27:19.944+02:00| vmx| I125: DISKLIB-LINK : "G:\VMs\VMware ESXi 6 (2)\VMware ESXi 6 (2).vmdk" : failed to open (The file specified is not a virtual disk).
2017-04-08T18:27:19.944+02:00| vmx| I125: DISKLIB-CHAIN : "G:\VMs\VMware ESXi 6 (2)\VMware ESXi 6 (2).vmdk" : failed to open (The file specified is not a virtual disk).
2017-04-08T18:27:19.944+02:00| vmx| I125: DISKLIB-LIB : Failed to open 'G:\VMs\VMware ESXi 6 (2)\VMware ESXi 6 (2).vmdk' with flags 0xa The file specified is not a virtual disk (15).
2017-04-08T18:27:19.944+02:00| vmx| I125: DISK: Cannot open disk 'G:\VMs\VMware ESXi 6 (2)\VMware ESXi 6 (2).vmdk': The file specified is not a virtual disk (15).
This does not happen when I create VM on any other disk on this system.
All disks are NTFS formated
I also tried to recreate the disk header with no success.
I honestly have no clue where to look for possible problem areas.
Hi,
Smells very much like hardware issues with the Plextor disk, mostly because of your mention that you have no issues when creating a VM on another disk.
IOW, either your plextor disk has issues itself or the sata/sas cable used to connect the Plextor SSD is unreliable (assuming it is a sata model and not a M.2 one)
As you mention no issue with other disks we can probably rule out that it is a power supply issue, although it might be that the plextor is more sensitive to it as the mechanical disks.
--
Wil
