I suspect that our vm windows 10 run tree time slower than windows server 2008/201 so I'm trying to mesure IOPS but the result vary with the tool i use.
we are ESXI 6.0.0 and vmfs 5.
for exemple on windows 10 if i use DiskSpd with this command.
diskspd -b8K -d30 -o4 -t8 -h -r -w25 -L -Z1G -c10G C:\IODatat.dat > C:\IOResults.log
the result look like this:
184MB/s look not that dramatique for users but if i try copy paste the 10Giga file in windows the performance look way differente with a big drop at start sometime it can performe about 50Mib/s.
In the other side if i do the test on my laptop explorer copy look faster than the test DiskSpd.
1-so how can we explain such difference?
2- this mesure are made in modern dell esx (empty) vmfs 5 free partition on a vmax full flash with 10GB fiber.
my sentiment is that MB/s should be really faster than this like (600/800MBs) on any tool what in your idea is a realistic speed on those vm ??
3- some of you observed that server 2008/2016 performe IOPS tree time faster than desktop distribution ?.