Disk Management¶

for test speed of a disk use hdparm with direct param

nvme dev 1 namespace 1¶

sudo hdparm -tT --direct /dev/nvme1n1

sample out:

/dev/nvme0n1:
Timing O_DIRECT cached reads:   3960 MB in  2.00 seconds = 1982.54 MB/sec
Timing O_DIRECT disk reads: 7590 MB in  3.00 seconds = 2529.56 MB/sec

check nvme disk with nvme-cli tool in debian install with # apt install nvme-cli

sudo nvme list

Output example:

Node                  Generic               SN                   Model                                    Namespace Usage                      Format           FW Rev
--------------------- --------------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- --------
/dev/nvme1n1          /dev/ng1n1            50026B77851E7266     KINGSTON SNV2S2000G                      1           2.00  TB /   2.00  TB    512   B +  0 B   ELFK1N.1
/dev/nvme0n1          /dev/ng0n1            50026B72835FB06D     KINGSTON SNV3S4000G                      1           4.00  TB /   4.00  TB    512   B +  0 B   P3DR0A27

Last update: Sep 04, 2025