Re: [PERFORM] optimal ZFS filesystem on JBOD layout

2010-07-01 Thread Greg Smith
Joachim Worringen wrote: Potential issues that I see: - the ZFS ZIL will not benefit from a BBU (as it is connected to the backplane, driven by the onboard-RAID), and might be too small (32GB for ~2TB of data with lots of writes)? This is a somewhat unpredictable setup. The conservative appr

[PERFORM] optimal ZFS filesystem on JBOD layout

2010-07-01 Thread Joachim Worringen
Greetings, we are running a few databases of currently 200GB (growing) in total for data warehousing: - new data via INSERTs for (up to) millions of rows per day; sometimes with UPDATEs - most data in a single table (=> 10 to 100s of millions of rows) - queries SELECT subsets of this table via