Setup
- Closed lab (no internet access)
- One Physical switch
- 4 working ESXi VM Hosts (but only one powered on for this issue)
2 with ESXi 6.5, 2 with ESXi 6.7. - One Windows 10 Pro PC - with installed VMWare Workstation 14 running vCenter VM and Content Library NAS (FreeNAS) VM
- 2 other Windows 10 Pro PCs
- All static IP addresses; No Windows Servers (no active directory), DHCP, etc.
BIND for DNS service (needed by vCenter) - All VMWare products are currently evaluation licenses.
Note: newbie VMWare user...
Description:
Wanted to perform a disk test to compare between a physical PC and a VM, so I wrote an application to append the contents of one file (75 GB) to the end of an existing one (5 GB).
I ran the test app on a older and slower (as compared to the one for the ESXi Host) Windows 10 Pro physical PC (SATA IDE) - took 15 mins to complete.
The same test on a Windows 10 Pro VM running in an ESXi 6.7 Host (SATA AHCI) - took 37 minutes.
Basically, it's just this VM Host with the one VM running.
Why would there would be such a big difference in time?
Appreciate any help... Thank you.
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Details of ESXi 6.7 Host:
- SuperMicro X10SRA-F (Intel C612 SATA Controller)
- 128GB memory
- BIOS I/O configured for SATA AHCI
- DataStore consists of 2 Seagate 1TB SATA HDs (no RAID)
- version of AHCI native driver: 1.2.0-6vmw.670.0.0.8169922
Details of VM:
- 1 CPU
- 8 GB memory
- 512 GB disk
SCSI Controller (1:0), LSI Logic SAS, Dependant - Windows 10 Pro
Disk performance stats (esxtop):
