Dell MD3220, MD3200 owner manual Performance Monitor Table Description Column Headings

12Click Save.

The Performance Monitor data provides information about how your storage array is performing. The data is presented in eight columns, which are described in this table. Use this data to make performance tuning decisions for your storage array.

Table 4-3. Performance Monitor Table Description

Column Headings	Description
Devices	Controller, virtual disk or storage array total.
Total IOs	Cumulative IO’s per second from last start time.
Read Percentage	Percentage of cumulative IO’s that are READs.
Cache Hit Percentage	Percentage of cumulative IO’s that are in-cache.
Current KB/second	Snapshot of throughput value per second (1KB = 1024
	bytes).
Maximum KB/second	Maximum recorded throughput value from last start time.
Current IO/second	Snapshot of IO’s per second (IOP = Input/output per
	second or one completed I/O transaction).
Maximum IO/second	Maximum recorded IOP from last start time.

For more information, see the online help topics.

Planning: MD3200 Series Storage Array Terms and Concepts

59