This is one of the oldest questions and has been well and truly put to bed since 11.0.3, especially on Solaris. It continues to be true on 11.5.x, 12.0.x and 12.5.x.
On a database of any significant size (ie. more than 100 gb), raw partitions will give you substantial performance over ufs. Spreading your data/index/log across many spindles will give you further performance. Do not forget to tune tempdb.
Recovery is not an option, it is a requirement.
Raw partitions have other advantages as well, not just performance and recovery. The Sybase server is already doing a massive amount of caching and paging (I trust you have tuned the data cache) which your o/s does not need to repeat, as it would under ufs.
My comments are based on real performance tuning exercises on large dbs, not on product brochures and calculations.
Last edited by DerekA; 09-17-02 at 05:42.
Senior Sybase DBA/Information Architect derekATsoftwaregemsDOTcomDOTau
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