DATTEST AUDIT 3.0 User Guide                                    18/9/96

Dattest express is a diagnostic utility for HP DDS products. It 
supports the following drives: 

HP35470, HP35480, C1534, C1536, C1533, C1553, C1537, C1557

Note that the inquiry string is not used to determine the type of drive, so
that OEM drives with different inquiry strings can be tested.

It runs on DOS 5 or later and requires an ASPI compliant HBA and manager to be 
installed.  

Details of the test are given below:

For each HP DDS drive found:

1) Do inquiry, display codename, inquiry string, FW rev and Servo rev

2) Read serial EPROM, if supported, write the raw data to the file serial.res

3) Read EEPROM error log, deode and display any errors

4) Check calibration constants, fail if any constants are not calibrated

5) Ask the user to load a tape. If the device is an autoloader ask the user 
   firstly to load a full magazine then tape 4 into the drive. Monitor the tape 
   loading process, fail if the drive reports an error or the timeout is 
   exceeded.

6) Read tape log and display a summary.

7) Space to EOD, write a filemark, write 2MB of data, disable compression if 
   supported, write some more data, the amount being dependant on what sort of 
   tape is in the drive: DDS1: 38MB, DDS2: 110MB, DDS3: 220MB. Fail if the drive 
   reports an error. Read C1 error counters, display the average of both 
   channels and an appropriate message. 
   
8) Space back one filemark, read the data and perform data compare. Read C1 error 
   counters, display the average of both channels and an appropriate message.

9) Ask the user to press the eject button, monitor the tape being unloaded, fail 
   if the drive reports an error or if the tape takes too long to unload.


Dattest Express will display a menu when invoked; the menu items are:

		   1)Quit Test
		   2)Log test results to file - (dattest.res)
		   3)Extended testing
		   4)Standard Test

Option 1 takes the user back to the DOS prompt, option 2 causes the results of 
the test to be appended to the file dattest.res. Option 3 does an extended test, 
using 5 times the amount of data as the standard test. Option 4 is the default.