HP ULTRIUM 1-SCSI SCSI SEQUENTIAL DEVICE DRIVER

This directive is available in version 1. Try to set any fixed block size to something like 64, bytes or larger if your drive will support it. If your tape drive requires fixed block sizes very unusual , you can use the following records:. It is also possible that you have your drive set in SysV tape drive mode. Dealing with Firewalls Up:

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You can get it here: As a default, it will look for bacula-sd.

Testing Your Tape Drive With Bacula

Dealing with Firewalls Up: Drives that run in fixed block mode can cause serious problems for Bacula if the drive's block size does not correspond exactly to Bacula's block size.

The first and best is to always ensure that your drive is in variable block mode.

The test using constant string ultriym give you the maximum speed of your hardware chain. Note that in such cases, Bacula is perfectly able to write to your Volumes tapesbut cannot position to read them. None of the specified options are required by Bacula, but a number of other options such seqyential SysV behavior must not be set. You might want to put those commands in a startup script to make sure your tape driver is properly initialized before ultriuj Bacula, because depending on your system configuration, these modes may be reset if a program other than Bacula uses the drive or when your system is rebooted.

If you do not successfully complete the above test, please resolve the problem s before attempting to use Bacula.

See the section above on setting your Archive device correctly. Bacula is not likely to work in seqhential a situation because it will normally attempt to write blocks of 64, bytes, except the last block of the job which will generally be shorter.

HP Ultrium-1 SCSI Sequential Tape Device Free Driver Download (Official)

This is too small and the overhead that Bacula has with each record will become excessive. Also, note that the Medium Type field of the output of tapeinfo reports Not Loadedwhich is not correct. For example, if your driver is set to work in SysV manner, Bacula will not work correctly because it expects BSD behavior.

Each read returns a single record. If the name is not found wequential the list of physical names, the utility program will compare the name you entered to the Device names rather than the Archive device names.

SCSI specification also talks about optional sequential filemarks, setmarks and sequential setmarks, but these are not implemented so often. Because there are often problems with certain tape drives or systems when end of tape conditions occur, btape has a special command fill that causes it to write random data to ultriu, tape until the tape fills. You are getting tape read errors, and this is most likely due to one of the following things: If you have a modern SCSI tape drive and you are having problems with the test command as noted above, it may be that some program has set one or more of your SCSI driver's options to non-default values.

There is no real slow mode like in Solaris - I just expect, that for older tape drives Filemarks may be slower than End-of-data, but not so much as in Solaris slow mode.

When using compression, the random test will give your the minimum throughput of your drive. This is done via crontab with the use ultrijm rmmod -a.

Hp Ultrium 1 Scsi Scsi Sequential Device Driver Download

The long term solution is to run your drive in variable block mode as described above. If you get into trouble at any point, carefully read the documentation given below. Some of the suggestions it provides for resolving the problems may or may not be useful. If you do have an autochanger, please be sure to read the Autochanger chapterAutochangersChaptermainchapter of the Bacula Enterprise Main Manual.

Problem Resolution Guide Previous: Please use only the simple single tape option because the multiple tape option still doesn't work totally correctly. Bacula's preferred method of working with tape drives sequential devices is to run in variable block mode, and this is what is set by default. In fixed block size mode, drivers may transmit a partial block or multiple blocks for a single read request.

Issued Channel A Bus Reset. The server team can only test and officialy support a manageable set of configurations and that combination didn't make the cut.

The drive must use BSD tape conventions. This should be done only if your drive does not support variable 1-zcsi sizes, or you have some other strong reasons for using fixed block sizes. If your configuration file is elsewhere, please use the -c option to specify where.