Since no two tapes are exactly the same length, what is this going to tell you, even if you did find out where the EOT marker was? I suppose if your are really insistent on the length of tape (there always seems to be one every year), you could take one apart, measure it's length, try to determine where the EOT is, find the percentage of the tape up to that point and use this as a general rule for all other tapes. Of course to know for sure you are going to have to take apart all tapes and measure each one just to be sure. Having never actually tried this, I can only assume that winding the tape back in to the cartridge could be a real bear.
Regards, Patrick Whelan NetBackup Specialist Architect & Engineering +44 20 7863 5243 A shocking crime was committed on the unscrupulous initiative of few individuals, with the blessing of more, and amid the passive acquiescence of all. - Publius Cornelius Tacitus "In a state where corruption abounds, laws must be very numerous." - Publius Cornelius Tacitus ... Als sie mich holten, gab es keinen mehr, der protestieren konnte - Martin Niemöller -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alexander Skwar Sent: 29 March 2007 14:52 To: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] Howto check the approx. available space on a tape? Martin, Jonathan (Contractor) <[EMAIL PROTECTED]> wrote: > There's no way to tell exactly how much more data a single tape will > hold, since anything better than 100GB (in your example) is compression > and compression varies by file type. Yes, I know. I'm not looking for an exact number. I don't know how LTO tapes exactly work, but I suppose that the tape is written now until a certain "position". If the tape is 609 meter long, it might be written up to 550 meters, which would be about 90%. Or is that assumption completely off? Alexander Skwar _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ************************************************************************************* The message is intended for the named addressee only and may not be disclosed to or used by anyone else, nor may it be copied in any way. The contents of this message and its attachments are confidential and may also be subject to legal privilege. If you are not the named addressee and/or have received this message in error, please advise us by e-mailing [EMAIL PROTECTED] and delete the message and any attachments without retaining any copies. Internet communications are not secure and COLT does not accept responsibility for this message, its contents nor responsibility for any viruses. No contracts can be created or varied on behalf of COLT Telecommunications, its subsidiaries or affiliates ("COLT") and any other party by email Communications unless expressly agreed in writing with such other party. Please note that incoming emails will be automatically scanned to eliminate potential viruses and unsolicited promotional emails. For more information refer to www.colt.net or contact us on +44(0)20 7390 3900. _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu