If you are talking about Windows 2000 then it has its own HCL: http://www.microsoft.com/whdc/hcl/search.mspx The HP Storageworks MSA's are listed here for Windows 2003: http://www.microsoft.com/windows/catalog/server/default.aspx?subID=22&xs lt=globalsearch&qu=HP+STORAGEWORKS+MODULAR&scope=1 And if you search the Windows 2000 HCL you for "HP Storageworks" you will find them listed there also. Mark -----Original Message----- From: Medeiros, Jose [mailto:jmedeiros@xxxxxxxxxxxxxxx] Sent: 28 November 2005 22:15 To: [ExchangeList] Subject: [exchangelist] RE: Exchange 2003 Cluster Question http://www.MSExchange.org/ Hi Mark, There is some thing wrong with the list. When I did a Hardware search on Proliant only the Proliant 110 & 150 show up. Why is this? I implemented Exchange 2000 clustered on Compaq Proliant G2 servers with an MSA 500 attached back in 2002 at Slamdunk Networks, and my understand then is that it was certified hardware. Why are those models not appearing now? Why is the MSA 1000 & 1500 not listed as well? I have several SQL 2000 clusters running both Storage Systems for their Quorum disk and SQL Database store? Sincerely, Jose Medeiros ADP | National Account Services ProBusiness Division | Information Services 925.737.7967 | 408-449-6621 CELL