My suggestion: a.. First, decide what portion of your expenses you want to recover through this chargeback. For example, the various costs of the physical server, licenses, normal support time, time to set up or change a VM, etc. b.. Then consider what factors contribute to the cost of an individual VM. These are potential choices for the basis of allocating costs. c.. Next decide what actions you want the chargebacks to encourage. For example, if the chargeback cost of a VM is close to that of a physical server, you may be discouraging the use of VMs. Don't encourage behavior that will make more work for your staff from frequent configuration changes. For example, charging too much for disk space would lead people to request too little, then have to add later on. d.. Then decide how fancy you want to be, and how easily you can manage any particular design. I've seen chargeback systems that were so involved that the IT department couldn't possibly maintain accurate records of the details. This led to general disbelief in the accuracy of the charges and resistance to the whole system. That disbelief and resistance was fully justified - the bills really were very far from accurate. e.. Try to look at what you'd be doing from the perspective of the department managers you'll be charging. This combines the two previous items and provides an insanity check. f.. Then go back through all of your earlier decisions and reconsider them in light of the other things you decided. You might decide to not charge out some basic costs of having capacity available, or reconsider what factors you want to charge for. You want to end up with a system that's simple for department managers to understand, reasonably logical, and which encourages behavior that's in the best interests of the company. Remember that you can always adjust the details the following year, and you'll probably want to.
Steve ----- Original Message ----- From: Cesare' A. Ramos To: NT System Admin Issues Sent: Monday, July 14, 2008 5:52 PM Subject: VM Server & comm cost Hellos to all. Wanted to see if anybody out there is charging depts. or business units for hosted servers in a virtual environment? We have a few depts. and are entertaining billing back on vm server use. Thoughts / formulas / input.. Thanks. CAR Office: 305-443-0331 xt. 1202 Mobile: 786-412-1746 Skype: 305-851-2606 Fax: 305-443-0350 e-Mail: [EMAIL PROTECTED] BB Pin: 23E727FF AIM: cramosMIA MSN: [EMAIL PROTECTED] Yahoo: cramosMIA ------------------------------------------------------------------------------ This e-Mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this e-Mail in error please notify the sender via returned e-Mail. Please note that any views or opinions presented in this e-Mail are solely those of the author and do not necessarily represent those of the company. Although IDF operates anti-virus programs, it does not accept responsibility for any damage whatsoever that is caused by viruses being passed. ** Think before you print this message. ** ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~
