I would expect growth close to 14 times your nightly run. The reasoning is you already have a copy of the stuff that does not change and you already have a copy of the last 7 days. You are adding 14 more days. There will be some shrinkage from the objects that do not make the 7 changes in 90 days because the older of them will drop off sooner.
If the change is made I would be interested in the actual results. Andy Huebner -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Dennis, Melburn (IT Solutions US) Sent: Wednesday, March 18, 2009 7:47 AM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] Calculating Change in Backup Environment Currently, our backup environment employs a 90-day / 7 revision backup policy. My customer has come to me to find out how much our backup data would grow or shrink if we went to a 21-day / 21-revision backup policy. Have any of you out there experience requests like this before, and if so, how were you able to get a reasonable guestimate of this. Mel Dennis Systems Engineer II Siemens IT Solutions and Services, Inc. Energy Data Center Operations 4400 Alafaya Trail MC Q1-108 Orlando, FL 32826 Tel.: 407-736-2360 Mob: 321-356-9366 Fax: 407-243-0260 mailto:melburn.den...@siemens.com www.usa.siemens.com/it-solutions This e-mail (including any attachments) is confidential and may be legally privileged. If you are not an intended recipient or an authorized representative of an intended recipient, you are prohibited from using, copying or distributing the information in this e-mail or its attachments. If you have received this e-mail in error, please notify the sender immediately by return e-mail and delete all copies of this message and any attachments. Thank you.
