Hi, I will migrate to E2K7 EE in a couple of months. Below is the present E2K3 DB details. Single E2K3 behind ISA 2004 without FE. Total Mailbox 250 DB size (edb+stm) 63GB Single storage group I am looking for an HP server with an appropriate Array controller that can accomodate this many mail users with approximately 4-5 storage groups and LCR. My main objective for this post is to get an opinion regarding the RAID controller on HP servers. I want 2 configure E2K7 EE as below on a single server but I am not sure whether I am right/wrong about the concept or is it a suggested solution/possible etc. Total SAS Disk used will be 12x146G 15K as below with 5 RAID groups. 2x146G 15K RAID 1 OS & E2K7 binaries 2x146G 15K RAID 1 LOGS 3x146G 15K RAID 5 E2K7 DB 2x146G 15K RAID 1 LOGS (LCR) 3x146G 15K RAID 5 E2K7 DB (LCR) If possible, what controller and HP server model will allow me to do this?. What about the pros and cons? Any ideas welcome.
As the read/write ratio decreases, the impact of the RAID 5 write penalty is worse. Back in the Rxchange 5.5 days, whent the read/write ratio was 8:1, RAID 5 could work. In Exchange 2003, with a 2:1 or 3:1 read/write ratio, RAID 5 was a poor choice. In Exchange 2007 with outlook clients in cached mode, you'll se a 1:1 or thereabouts read write ratio. You'll simply use far more spindles with RAID 5 than you would with RAID 1 or RAID 1; it's a bad choice. Go with RAID 1 or 10. "Themask" wrote in message news:174F24D7-44FB-4C74-9CB1-C2108C7746B9@microsoft.com... > Hi, > I will migrate to E2K7 EE in a couple of months. Below is the present > E2K3 > DB details. > > Single E2K3 behind ISA 2004 without FE. > Total Mailbox 250 > DB size (edb+stm) 63GB > Single storage group > > I am looking for an HP server with an appropriate Array controller that > can > accomodate this many mail users with approximately 4-5 storage groups and > LCR. > > My main objective for this post is to get an opinion regarding the RAID > controller on HP servers. > > I want 2 configure E2K7 EE as below on a single server but I am not sure > whether I am right/wrong about the concept or is it a suggested > solution/possible etc. > > Total SAS Disk used will be 12x146G 15K as below with 5 RAID groups. > > 2x146G 15K RAID 1 OS & E2K7 binaries > 2x146G 15K RAID 1 LOGS > 3x146G 15K RAID 5 E2K7 DB > 2x146G 15K RAID 1 LOGS (LCR) > 3x146G 15K RAID 5 E2K7 DB (LCR) > > If possible, what controller and HP server model will allow me to do > this?. > What about the pros and cons? > Any ideas welcome. >
Take a look at the 2007 storage calculator too, here: http://msexchangeteam.com/archive/2007/01/15/432207.aspx It will help you design your IO requirements. Oliver
With that many spindles you're going to be looking at some sort of external array - probably one of the MSA boxes. I don't know the SmartArray part numbers anymore. What are you looking to gain with LCR? Putting it all in one box/one controller makes it somewhat of a moot point IMO. -- Thanks, Brian Desmond Windows Server MVP - Directory Services www.briandesmond.com "Themask" wrote in message news:174F24D7-44FB-4C74-9CB1-C2108C7746B9@microsoft.com... > Hi, > I will migrate to E2K7 EE in a couple of months. Below is the present > E2K3 > DB details. > > Single E2K3 behind ISA 2004 without FE. > Total Mailbox 250 > DB size (edb+stm) 63GB > Single storage group > > I am looking for an HP server with an appropriate Array controller that > can > accomodate this many mail users with approximately 4-5 storage groups and > LCR. > > My main objective for this post is to get an opinion regarding the RAID > controller on HP servers. > > I want 2 configure E2K7 EE as below on a single server but I am not sure > whether I am right/wrong about the concept or is it a suggested > solution/possible etc. > > Total SAS Disk used will be 12x146G 15K as below with 5 RAID groups. > > 2x146G 15K RAID 1 OS & E2K7 binaries > 2x146G 15K RAID 1 LOGS > 3x146G 15K RAID 5 E2K7 DB > 2x146G 15K RAID 1 LOGS (LCR) > 3x146G 15K RAID 5 E2K7 DB (LCR) > > If possible, what controller and HP server model will allow me to do > this?. > What about the pros and cons? > Any ideas welcome. >
