Re: Where to put logs in a RAUD 1+0 system

I found a paper written for an RDBMS whose name escapes me which rather answers my question: <snip> In general it is easiest and most efficient to stripe the logs across all the disks just like the data files. Sometimes people worry that placing the log files on the same disks as the data files will cause interference between data accesses and log writes. This is because the disk head may have to move to a new position when the log is written. As we discussed in the previous section, for relatively small seeks the rotational latency of the IO will dominate the seek time. So, if the log file is placed along with the other frequently accessed data on the outside half of the disk, interference will not be a significant problem. Striping across too few disks is a bigger problem in practice. </snip>