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Microsoft® SQL Server 2012 Unleashed by Alex T. Silverstein, Chris Gallelli, Paul T. Bertucci, Ray Rankins

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Monitoring the Disk System

SQL Server performance depends heavily on the I/O subsystem. SQL Server is constantly reading pages from and writing pages to disk via the data cache. It is also constantly writing to disk via the transaction log. Focusing on the database data files, transaction log files, and especially tempdb can yield great performance for your SQL Server platform. Table 35.6 lists the essential performance objects and counters related to monitoring the disk system.

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TABLE 35.6 Disk Usage-Related Performance Objects and Counters

Slow disk I/O causes a reduction in the transaction throughput. To identify which disks are receiving all ...

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