nvme-wdc-vs-device-waf(1)
=========================

NAME
----
nvme-wdc-vs-device-waf - Calculates the device write amplification factor and
prints both TLC and SLC results

SYNOPSIS
--------
[verse]
'nvme wdc vs-device-waf' <device> [--output-format=<normal|json> -o <normal|json>]
			[--namespace-id=<nsid> | -n <nsid>]

DESCRIPTION
-----------
For the NVMe device given, calculates the device TLC and SLC write 
amplification factor.

The <device> parameter is mandatory and may be either the NVMe character
device (ex: /dev/nvme0) or block device (ex: /dev/nvme0n1).

This will only work on WDC devices supporting this feature.
Results for any other device are undefined.

On success it returns 0, error code otherwise.

OPTIONS
-------
-o <format>::
--output-format=<format>::
	Set the reporting format to 'normal', or
	'json'. Only one output format can be used at a time.
	Default is normal.

-n <nsid>::
--namespace-id=<nsid>::
	Sets the command's nsid value to the given nsid. Defaults to
	0xffffffff if not given. This option may not affect anything
	depending on the log page, which may or may not be specific to
	a namespace.

EXAMPLES
--------
* Has the program issue WDC vs-device-waf plugin Command :
+
------------
# nvme wdc vs-device-waf /dev/nvme0
------------

NVME
----
Part of the nvme-user suite.
