On Thu, April 1, 2010 18:48, Chris Dawe wrote: > On 2010-03-24 20:55, Daniel Pope wrote: >> On 24/03/10 19:40, Andy Smith wrote: >> > Database heads with storage mounted remotely off a SAN or NAS is an >> > extremely common setup in the real world. >> >> I find that quite surprising. My understanding was that the syscalls > (locking >> and mmap) are not supported well enough enough to offer consistency and >> durability guarantees. >> Dan > > Many database installations use SAN-based storage, but they do NOT use NFS > since it have reliability problems (network glitches, etc).
Sorry, but yes they do. AndyS and I both worked for the same company that served quite large and quite busy databases off NetApp filers via NFS. In terms of protocol reliability we had no problems that I can recall over a period of at least 20 months. -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --------------------------------------------------------------
