The point of this whole set-up is to be able to get as close as we can with the hardware we have available to a point in time backup for DR. The 2ndary mirrored devices are then backed up offline to tapes and the tapes shipped to off-site storage. The .08ms & .03ms were basically for documentation - the expensive part for us would be to establish then 2nd site for remote mirroring.
dd keller Thanks for the details on your normal daily backup cycle. I just have one question. The difference between .08 ms. and .03 ms. is .05 ms., or 50 microseconds. Do you really need to reduce write elapsed time by that small an amount at the cost of having your secondary mirror devices in the same room as your primary devices? You must be seriously write-intensive with very low I/O service times for 50 microseconds to be a large increment in service time. Bill Fairchild Rocket Software ************************************************************************************** This e-mail message and all attachments transmitted with it may contain legally privileged and/or confidential information intended solely for the use of the addressee(s). If the reader of this message is not the intended recipient, you are hereby notified that any reading, dissemination, distribution, copying, forwarding or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately and delete this message and all copies and backups thereof. Thank you. ************************************************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
