VERITAS Quick I/O bypasses the file system page cache, eliminating extra buffering, and providing direct writes to disk. It thereby enhances performance, enables more efficient use of memory and significantly reduces CPU usage.
Here is a link to a Sybase performance test on Veritas storage. It's done by Veritas Software Corp.
http://eval.symantec.com/mktginfo/products/White_Papers/Storage_Server_Management/sf_sybase_40_perf_solaris.pdf
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