I'm not disputing that there may be performance and quality variations. What I'm asking Mr. Boyd about are the detail of the substantial architectural differences in how they manage data he says exist.
Ed Crowley MCSE+Internet MVP Freelance E-Mail Philosopher Protecting the world from PSTs and Bricked Backups!T -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Anthony Sollars Sent: Tuesday, September 13, 2005 8:13 AM To: Exchange Discussions Subject: RE: SAN and Exchange Well I am not aware of the details of why SANs perform differently, but EMC and IBM explained it this way. We have an IBM shark, which we use primarily for our Mainframe and AS/400 systems, while we use EMC Clariion's for our intel distributed systems and unix servers. The EMC is a lower costing product than the IBM shark, but actually performs better from a raw I/O throughput frame of reference. The IBM shark is really designed for stability, and we truly never have any issues with it at all, 100% uptime. The EMC has had it's issues and microcode upgrades have forced downtime for us, but the system performs so insanely fast. The clarriion tends to use the latest software to get the most performance out of the technology, while the IBM SAN sticks with what is rock solid and performs. Another note, we are one of the few insane companies that run true diskless server, Booting to SAN for all. We are running about 225 boot to san servers now. Hope some of my practical knowledge helps a little, wish I could give you more detail though. Well guess I better pay attention, I am in a VoIP class this week. TTYL, Tony Sollars -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ed Crowley [MVP] Sent: Monday, September 12, 2005 3:42 PM To: Exchange Discussions Subject: RE: SAN and Exchange Okay, I'll ask again. How so? You list some generalities, but I still don't understand how the two products are different. I'm not a SAN expert by any stretch of the imagination, but I really wasn't aware that there are such fundamental differences, so I'd like to understand exactly what they are. Ed Crowley MCSE+Internet MVP Freelance E-Mail Philosopher Protecting the world from PSTs and Bricked Backups!T -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Boyd, Nathan Sent: Monday, September 12, 2005 3:32 PM To: Exchange Discussions Subject: RE: SAN and Exchange As I understand it one major difference between EMC and EVA is how they handle disk groups and how the physical disk spindles are written too and distributed within those disk groups. The EVA allows you to create massive disk groups comprising of as many disks as your array will handle, and the larger the better in terms of Disk IO. I also understand many of the SAN solutions handle RAID and VRAID differently and performance can be increased vs. decreased by the amount of disks, depending on what SAN solution you go with. Nathan -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ed Crowley [MVP] Sent: Monday, September 12, 2005 1:11 PM To: Exchange Discussions Subject: RE: SAN and Exchange How so? Ed Crowley MCSE+Internet MVP Freelance E-Mail Philosopher Protecting the world from PSTs and Bricked Backups!T -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Boyd, Nathan Sent: Monday, September 12, 2005 12:59 PM To: Exchange Discussions Subject: RE: SAN and Exchange I would add that not all SANs are the same. The way EMC writes data compared to EVA is significantly different and you should understand how your SAN works first and foremost. Nathan -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bowles, John (OIG/OMP) Sent: Wednesday, September 07, 2005 11:26 AM To: Exchange Discussions Subject: SAN and Exchange All, Are there any special modifications you need to do to add your Exch2K3 to a SAN? Please let me know. Thank you, ______________________ John Bowles Exchange Engineer OIG/HHS [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with. _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with. _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with. _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with. _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with. _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with. _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with.
