Depends on the characteristics of the I/O. If it's primarily read-only I/O, then either AFS or Lustre would be a good choice. AFS also has the advantage of allowing the servers to be geographically distributed as well, which would help with availability. If it's primarily write traffic, then Lustre or GPFS would probably be my pick, with a preference for Lustre, as GPFS doesn't support as many platforms and is closed-source (read very expensive). AFS will be getting some work in the near future to balance out the read/write tradeoff, and it's got the longest track record of the bunch. It also has the best support available (both commercial and non-commercial). Lustre is a bit finicky to get started, but can seriously stress a zSeries I/O subsystem once configured properly -- done right, it'll give z/OS a run for it's money for I/O volumes. Getting to that point is fairly difficult, though. Hasn't been much work on GFS recently. Since the Red Hat takeover, they've pretty much left the 390 port lying on the ground bleeding profusely. You'd have to ask IBM about GPFS development. Costs too much for me to get much experience with it.
________________________________ From: Linux on 390 Port on behalf of Yu Safin Sent: Tue 5/8/2007 5:26 PM To: [email protected] Subject: Re: Cluster File System for HA On 4/17/07, David Boyes <[EMAIL PROTECTED]> wrote: > Lustre > OpenAFS > OpenDFS > OpenGFS > GPFS David, which one would you recommend for a heavy I/O bound file system for a production environment where availability is critical? ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
