Has anyone attempted using ZFS compression on mail spools? This is a new Cyrus 2.3.8 mail-store, and we are using dual fiber HBA to SAN switches and Sun 3510FC units on the backend, multipath and active-active on the dual-controllers. RAID-5 LUNs on each array are ZFS mirrored between arrays. Yes, multiple levels of paranoia. We have Sun T2000 which are quad-CPU. So it seems like there is plenty of CPU there for the extra overhead that inline compression is likely to add. Anyhow, I still envision the I/O being the bottleneck though so I am wondering if turning this on will buy me any performance and at what price? This system is not in production yet so I am still throwing things at it to see at what point it breaks. ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
