RE: 5.5 Raid Config

[Sean Martin]

The below suggestions were given to me by our fearless leader Andrew S. Baker for a question I had on my SQL server's disk configuration. I believe similar configs are suggested for Exchange as well.   I'd say you need 7 drives minimum for a RAID5 config [1]: * 2 x 9GB (or 18GB) ----- RAID1 (OS and pagefile) * 2 x 18GB (or 36GB) ----- RAID1 (Database Logs) ---- Transaction logs * 3 x 18GB (or 54GB) ----- RAID5 (Databases) ----- Information stores OR 6 drives minimum for an all RAID1 config [1]: * 2 x 9GB (or 18GB) ----- RAID1 (OS and pagefile) * 2 x 18GB (or 36GB) ----- RAID1 (Database Logs) --- Transaction logs * 2 x 36GB (or 54GB) ----- RAID1 (Databases) ----- Information stores   Regards,   Sean Martin, MCSE Network Administrator Ribelin Lowell & Company Insurance Brokers, Inc. 3111 C Street, Suite 300 Anchorage, Alaska 99503 Ph: (907) 561-1250 Fax: (907) 561-4315 Cell: (907) 229-0885 Email: [EMAIL PROTECTED] -----Original Message----- From: Clark, Steve [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 15, 2001 10:02 AM To: MS-Exchange Admin Issues Subject: RE: 5.5 Raid Config Why do you think that 3 -  9Gb in a RAID 5 config is “not good enough”?   I’ve had a drive fail in that configuration and the server/ Exchange/ OS stayed up through the whole thing.   Steve Clark Clark Systems Support, LLC www.clarksupport.com   -----Original Message----- From: Ray Zorz [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 15, 2001 1:49 PM To: MS-Exchange Admin Issues Subject: RE: 5.5 Raid Config   I don't know if you'll find anything that's exchange specific.  There's no reason why you can't just run it on an 18gig scsi disk.  I am.   That being said, uptime is the primary reason for going to the various Raid levels.    -----Original Message----- From: Micciche Robert [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 15, 2001 10:41 AM To: MS-Exchange Admin Issues Subject: 5.5 Raid Config I need to set up a new Exchange Server and am looking for anything that Microsoft has written about Exchange 5.5: RAID/Performance.  I am being asked why I can just buy a single 18G SCSI disk instead of multiple disks with mirroring and RAID 5.  (Also want to know why (3) 9G Scsi's with RAID 5 isn't good enough for me.)   I know this has been BEAT TO DEATH, but could someone please direct me to anything that MS has written on this subject so that I can print it out?  I am in the Disaster Recovery White Paper and am not finding the suggested Config.  It's not in my New Riders 5.5 book either.   Thanks in advance.     List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm DO NOT read, copy or disseminate this communication unless you are the intended addressee. This e-mail communication contains confidential and/or privileged information intended only for the addressee. If you have received this communication in error, please call us immediately at (907) 561-1250 and ask to speak to the sender of the communication. Also, please e-mail the sender and notify the sender immediately that you have received the communication in error.