Disk Stress

Running Disk Verification Test

If you are testing any drive that requires media or testing in system-mode on a computer that contains drives that require media, you must insert media into the drives. The media that is used must be formatted and contain data that occupies at least 50% of the media's capacity.

Command Syntax

	Command option		Description
/a		Run on all associated devices.
/b		Block size (integer) in bytes of IO transactions. MB & KB supported. ex: /b 32KB
/c		Scenarios to test.  should be a list delimited with ','s or ';'s.  Valid characters are: s: sequential scenario, x: random scenario, r: read access, w: write access, v: verify (writes followed by reads and data verification), ex: /c sv;xr;xw, ex: /c sv,xr,xw
/d		Device identifiers of devices to test delimited with ','s or ';'s.  If none are specified all disks are tested.  Identifiers include: Instance path, PhysicalDriveX, and Drive letter.  An identifier of "any" will cause the test to run on any device on the system.  ex: /d "IDE\DISKMAXTOR_6L160M0__________________________BANC1G10\5&2A36C317&0&0.1.0" /d PhysicalDrive1;G:;"PCI\VEN_8086&DEV_2651&SUBSYS_01791028&REV_03\3&172E68DD&0&FA"
/f		Force file mode.  The test won't attempt to dismount volumes.  This should not be used as an accurate measure of disk performance.
/i		Iterations (integer) to run. Cannot be specified with /d.  Default is 1 if /d is not specified.
/l		Number of buckets to use for approximate latency measurements.
/o		Enable testing of optical drives.
/q		Depth of the IO queue (integer).
/s		Size (integer) in bytes of one iteration. KB, MB, & GB supported. ex: /s 6GB
/t		Time (integer) in seconds to execute.  Cannot be specified with /i.  You may also use TimeSpan formatting: dd.hh:mm:ss
/v		Use verbose logging /x    Name of XML File to use for reporting.  If file.xml is undefined a unique name based on machine, date, and time will be used.

File Manifest

File	Location
DiskIo.exe	…\tests\%ARCHITECTURE%\nttest\driverstest\storage\wdk
StorageDevices.dll	…\tests\%ARCHITECTURE%\nttest\driverstest\storage\wdk