"O'Brien, David W. [C] , NIH/CIT" <obrie...@mail.nih.gov> wrote in message news:<cd22aa1aee707d489d9250d13e3862a18591355...@nihmlbxcms02.nih.gov>.. . > Can anyone suggest a methodology to measure GB per hour written to tape? > > Management is seeking to evaluate the additional CPU overhead that s/w encryption might entail. > > IBM's Volume mount analyzer gives tape allocation and tape mounts per hour but not, to my knowledge, GB written per hour. > > Yes, we are still discussing h/w vs. s/w encryption. Thank you to all who responded to the earlier thread. > > Thank You, > Dave O'Brien
How about SMF record 15 for devicetype 3490 (or your device)? It has the OPEN time, CLOSE time and bytes written. This will give you an average over that interval. Split it up sections of e.g. one hours and accumulate all tape activity per hour. In the same way you can calculate the bytes read from tape from SMF 14. I suppose you might also want to calculate the decryption overhead. Kees. ******************************************************** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ******************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
