Virtual Storage

[root@arc] /usr/home/stas# diskinfo -tv /dev/da0
/dev/da0
        512             # sectorsize
        42949672960     # mediasize in bytes (40G)
        83886080        # mediasize in sectors
        1048576         # stripesize
        0               # stripeoffset
        5221            # Cylinders according to firmware.
        255             # Heads according to firmware.
        63              # Sectors according to firmware.
        VMware Virtual disk     # Disk descr.
                        # Disk ident.
        Yes             # TRIM/UNMAP support
        0               # Rotation rate in RPM
        Not_Zoned       # Zone Mode

Seek times:
        Full stroke:      250 iter in   0.007826 sec =    0.031 msec
        Half stroke:      250 iter in   0.009200 sec =    0.037 msec
        Quarter stroke:   500 iter in   0.019211 sec =    0.038 msec
        Short forward:    400 iter in   0.022640 sec =    0.057 msec
        Short backward:   400 iter in   0.022201 sec =    0.056 msec
        Seq outer:       2048 iter in   0.074611 sec =    0.036 msec
        Seq inner:       2048 iter in   0.038861 sec =    0.019 msec

Transfer rates:
        outside:       102400 kbytes in   0.122882 sec =   833320 kbytes/sec
        middle:        102400 kbytes in   0.023465 sec =  4363946 kbytes/sec
        inside:        102400 kbytes in   0.023460 sec =  4364876 kbytes/sec



root@iddqd:/home/stas # diskinfo -tv /dev/nvd0
/dev/nvd0
        512             # sectorsize
        644245094400    # mediasize in bytes (600G)
        1258291200      # mediasize in sectors
        0               # stripesize
        0               # stripeoffset
        VMware Virtual NVMe Disk        # Disk descr.
        VMWare NVME_0000        # Disk ident.
        Yes             # TRIM/UNMAP support
        0               # Rotation rate in RPM

Seek times:
        Full stroke:      250 iter in   0.028607 sec =    0.114 msec
        Half stroke:      250 iter in   0.032189 sec =    0.129 msec
        Quarter stroke:   500 iter in   0.055986 sec =    0.112 msec
        Short forward:    400 iter in   0.045509 sec =    0.114 msec
        Short backward:   400 iter in   0.045690 sec =    0.114 msec
        Seq outer:       2048 iter in   0.190099 sec =    0.093 msec
        Seq inner:       2048 iter in   0.187393 sec =    0.092 msec

Transfer rates:
        outside:       102400 kbytes in   0.083827 sec =  1221563 kbytes/sec
        middle:        102400 kbytes in   0.085463 sec =  1198179 kbytes/sec
        inside:        102400 kbytes in   0.084052 sec =  1218293 kbytes/sec