Hi, as you saw in Andreas's minutes, we reviewed a few more terms on Monday's call, in the continuing convergence of the EGA and OGSA glossaries. We decided not to include DMTF, and we reviewed "utility computing," but decided not to include it for the time being - we'll revisit that decision later.

We reviewed SLA and SLO. For SLA, I've converged the two definitions by reducing the wordiness of the OGSA definition and adding the concept of payment, which was in the EGA definition. The definition of SLO is unchanged from the OGSA version, because the definitions were consistent

Service-level agreement: A contract between a provider and a user that specifies the level of service that is expected during the term of the contract.

SLAs are used by vendors and customers, as well as internally by IT shops and their end users. They might specify availability requirements and response times for normal operations and for problem resolution (network down, machine failure, etc.), and they might stipulate the payment and/or penalties associated with meeting or failing to meet the agreed criteria.

See also: Service-level objective

Service-level objective: A target level of service for a resource or a set of resources.

An SLO might be expressed in units such as average response time for a representative set of transaction types, or in terms of the monthly availability of a given service.

See also: Service-level agreement

If you have comments please let me know; otherwise I'll move these terms into the draft document.

- Jem

Jem Treadwell
Hewlett-Packard Company
6000 Irwin Road
Mount Laurel, NJ 08054


Phone:	856-638-6021
Fax:	856-638-6190
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