On Fri, 2007-04-06 at 16:31 -0500, Marcy Cortes wrote: > >"SAN is cheaper" ... <snip> > > This one I don't quite get? If I'm using the same DS8000, why would it > be cheaper?
I can think of one way... If you want to do multipath I/O, for ECKD disk that's PAV and will cost you extra for the PAV licensing (at least on IBM storage, but I can't imagine the other vendors doing themselves out of money (: ). For Open Systems disk in the same box you can multipath using FCP without having to pay for PAV. This can be a factor even if you're not interested in multipath for your Linux data. If you need to have PAV for z/OS and your Linux data is in the same box, using SAN for the Linux data will help you squeak into a lower price bracket for your PAV license -- I'm told that PAV is licensed on the *entire* ECKD capacity in the machine. Using other disk vendors might be another way to make things cheaper, but you'd likely run the risk of becoming unsupported. And, as others have said, what's cheaper or faster might not necessarily be better (for various reasons). Cheerio, Vic Cross -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
