CAYE PIERRE wrote: > Hi, > > I am looking for feedback about use of SANergy. > > Looking for impressions, efficiency, applicable domains, problematics, > difficulties and so. > > I am studying possible implementation of SANergy for backup purpose in > wintel world (with AIX/TSM Server). > > Regards, > > Pierre
I have one big problem with SANergy, and that is that it requires a preload of a specific library on the 'client' to overload filesystem calls in those cases where a SANergy FS is involved. Thus it is a complete user-space solution and users might break their environment and thus make sanergy behave as a normal NFS filesystem. I've had (but this was way way back) problems starting apache when the sanergy libc was preloaded on at least one system, so at least at that time sanergy was actually capable of breaking working applications. Both experiences at that time made me decide that sanergy was not ready for production and I'd recommend against using it. If TSM were to support another SAN shared filesystem across your platforms in the future, one that does solve filesystem problems where they belong (in the kernel or at least below the VFS layer), that might solve your problems without introducing many new ones. Remember, that neither sanergy or anything like it, nor lan-free are free of charge, so maybe upgrading your lan and/or server might be cheaper for those nodes. -- Met vriendelijke groeten, Remco Post SARA - Reken- en Netwerkdiensten http://www.sara.nl High Performance Computing Tel. +31 20 592 3000 Fax. +31 20 668 3167 PGP Key fingerprint = 6367 DFE9 5CBC 0737 7D16 B3F6 048A 02BF DC93 94EC "I really didn't foresee the Internet. But then, neither did the computer industry. Not that that tells us very much of course - the computer industry didn't even foresee that the century was going to end." -- Douglas Adams
