Disk Performance
Disk performance is typically expressed as a value of the total number of I/O operations that occur per second (IOPS), measured over some period of time during peak usage.
To determine the number of disks needed to meet a system’s IOPS requirement, the IOPS of a given drive needs to be determined. To further complicate matters, IOPS are very dependent upon the access pattern. For example, a drive will typically have a higher IOPS rating for sequential reads than it will for random writes. For this reason, it is normal to calculate a "worst case" IOPS measurement based on short random input/output operations.
To calculate the IOPS of a drive, information about the drive needs to be collected. The following table lists the information ...
Get Windows Server 2008 Terminal Services now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
