High PageIOLatch_SH Waits with High Drive Idle times

Posted by Marty Trenouth on Stack Overflow See other posts from Stack Overflow or by Marty Trenouth
Published on 2011-11-15T17:18:12Z Indexed on 2011/11/15 17:51 UTC
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sql

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sql-server

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Windows

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io

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bigdata

We are experiencing high volume of PageIOLatch_SH waits on our database (row counts in the Billions). However it seems that our drive Idle time Percentage hovers around 50-60 percent. CPU usage is nill. The Database Tuning Advisor gives no suggestions for optimization. The query plan (actual) from the single stored procedure used on the database puts the majority of the expense on index seek (yeah I know these should be optimial) operations.

Anyone have suggestions of how to increase throughput?

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