topic Re: Hardware compression in StoreEver Tape Storage

Hardware compression

CA1315696 — Fri, 19 Aug 2005 09:41:36 GMT

Hi!
I'm using a hp Storageworks Ultrium tape drive model 460 in a Windows 2003 Server.

I don't know how to activate the hardware compression. When I open the device manager and see the Ultrium properties they appear shadowed (I can't change properties) and the "Hardware compression" is set to false. So I'm backing up data using the double space.
Any solutions?

Thanks!

Re: Hardware compression

Florian Heigl (new acc) — Fri, 19 Aug 2005 10:45:14 GMT

Did You install the HP-supplied drivers?
They are probably needed for being able to set this option.

Re: Hardware compression

CA1315696 — Fri, 19 Aug 2005 10:49:34 GMT

I've installaed the hplto.sys driver version: 1.0.2.0, I think is the last one.
I downloaded from here:
http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?locale=en_US&pnameOID=238673&taskId=135&prodTypeId=12169&prodSeriesId=238671〈=en&cc=us&swEnvOID=1005

Re: Hardware compression

Lewis Finch — Fri, 19 Aug 2005 11:29:36 GMT

Hardware compression is enabled by default on this drive. You can run out Libray and Tape Tools diagnostic to test compression.

http://h18006.www1.hp.com/products/storageworks/ltt/index.html

Re: Hardware compression

CA1315696 — Mon, 22 Aug 2005 05:43:39 GMT

And if I want to disable the hardware compression how can I do it?

Re: Hardware compression

Lewis Finch — Mon, 22 Aug 2005 07:02:55 GMT

Since hardware compression is more effective than software compression it wouldn't be a good idea to disable it. Here is a link that will help you.

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=lpg50244

Re: Hardware compression

CA1315696 — Tue, 30 Aug 2005 10:03:36 GMT

The problem continues: I can backup only up to 200 GB to the tape.
I go to the Device Manager and under "Tape Drives-> HP LTO Ultrium-2 Drive" I double click and in the property Hardware Compression is set to 0 and it is grayed, so I can't change to 1...

Where can I force the HW compression for this tape drive?

Tape Drive Location: Bus Number 0, Target ID 3, LUN 0

Re: Hardware compression

CA1315696 — Tue, 30 Aug 2005 10:15:05 GMT

Firmaware: F5CD/OEM9
Driver: hlto.sys - Version: 1.0.2.0