My Database is a SQL Server 2000 Enterprise Edition and Windows 2000 Advanced Server, with 3.5G RAM. The /3gb switch is enabled. When I check the Available Bytes it shows 600 MB of Memory as available. My Questions: 1.)Will the OS take 1GB and limit SQL to 2.5GB ? 2.)Or will SQL grow to 3GB on need basis ? 3.)Or will SQL just remain below 2GB because OS needs 1 gig and so wouldn't let SQL use the /3gb ? Thanks for your answers.