I guess he meant Exchange 2007, in which case the answer is that although the overall i/o load on storage has reduced, the reduction is predominantly in READ through increased caching. This has changed the balance of i/o and so they now recommend raid-1 or raid-10 for the database store due to the relatively poor write performance of RAID-5. Note this doesn't apply for Exchange 2010, now the reduction is even more so performance isn't really an issue.... Dave Wade Business Services I.C.T. 0161 474 5456
________________________________ From: James Kerr [mailto:cluster...@gmail.com] Sent: 20 December 2010 15:25 To: MS-Exchange Admin Issues Subject: Re: Exchange 2007 RAID Recommendation I would have thought that we would have moved on to new storage technology by 3007. James ----- Original Message ----- From: ExchList <mailto:exchl...@networkblade.com> To: MS-Exchange Admin Issues <mailto:exchangelist@lyris.sunbelt-software.com> Sent: Friday, December 17, 2010 12:27 PM Subject: Exchange 2007 RAID Recommendation I know that MS recommended a RAID-1 and RAID-5 for Exchange 2003, has that changed with Exchange 3007? Is RAID-10 now more of a recommendation than RAID-5? Thanks! --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe exchangelist ********************************************************************** Stockport Council, in partnership with the Police, have launched the Safer Stockport initiative to show how working together with local communities can help to create safer places in which to live, work and visit. To find out how you can get involved, visit http://www.stockport.gov.uk/safer This email, and any files transmitted with it, is confidential and intended solely for the use of the individual or entity to whom they are addressed. As a public body, the Council may be required to disclose this email, or any response to it, under the Freedom of Information Act 2000, unless the information in it is covered by one of the exemptions in the Act. If you receive this email in error please notify Stockport ICT, Business Services via email.qu...@stockport.gov.uk and then permanently remove it from your system. Thank you. http://www.stockport.gov.uk ********************************************************************** --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe exchangelist