Storage Array | Array name. |
RAID Group | RAID group name. |
Performance | Either Fast, Normal, or Slow, based on the performance index calculation for the LUN using the last baseline profile ranges for Fast and Slow performance; takes into account the worst performance of a LUN in the RAID Group. Each of these performance states are represented by a colored dot as shown in the legend at the top of the report. |
RAID Type | RAID type. |
Drive Type | Drive type, such as SAS or SATA. |
Drive Speed | Drive speed in RPM. |
Drive Form | Drive enclosure. |
# LUNs | # of LUNs with drilldown to Array Performance by LUN. You can also click the LUN name to show the LUN Details report. |
Response (ms) | I/O response time = the average response time for all read and write operations (average I/Os). Response-time metrics are not available for Dell Compellent, EMC Symmetrix, IBM SVC, or HP 3PAR arrays. |
Max Read | Identifies the LUN in the group with the longest read response time. This is the highest response time for a single LUN, from all the LUNs in the group. This can be used to identify the LUN with a performance problem. |
Max Write | Identifies the LUN in the group with the longest write response time. This is the highest response time for a single LUN, from all the LUNs in the group. This can be used to identify the LUN with a performance problem. |
Avg Total | Average of the average response times. |
Avg Read | Average of the average response times (for the LUNs in the RAID Group) during the specified interval in milliseconds. Response-time metrics are not available for Dell Compellent, EMC Symmetrix, IBM SVC, or HP 3PAR arrays. |
Avg Write | Average of the average response times (for the LUNs in the RAID Group) during the specified interval in milliseconds. Response-time metrics are not available for Dell Compellent, EMC Symmetrix, IBM SVC, or HP 3PAR arrays. |
Throughput IO/sec | Average Read IOs/sec + Average Write IOs/sec. |
Max Read | Identifies the LUN in the group with the largest read throughput (IOs/sec). This is the largest value for a single LUN, from all the LUNs in the group. This can be used to identify the LUN with a performance problem. |
Max Write | Identifies the LUN in the group with the largest write throughput (IOs/sec). This is the largest value for a single LUN, from all the LUNs in the group. This can be used to identify the LUN with a performance problem. |
Avg Total | Sum of the throughput (IOs/sec) averages. |
Avg Read | Sum of the average Read IOs for the interval/length of interval in seconds. |
Avg Write | Sum of the average Write IOs for the interval/length of interval in seconds. |
Max Read | Identifies the LUN in the group with the highest read transfer rate. This is the highest read transfer rate for a single LUN, from all the LUNs in the group. This can be used to identify the LUN with a performance problem. |
Max Write | Identifies the LUN in the group with the highest write transfer rate. This is the highest write transfer rate for a single LUN, from all the LUNs in the group. This can be used to identify the LUN with a performance problem. |
Avg Total | Average of the average total transfer rates for the LUNs in the group. |
Avg Read | Average of the average read transfer rate for the LUNs in the group, for the interval/length of interval in ms. |
Avg Write | Average of the average write transfer rate for the LUNs in the group, for the interval/length of interval in ms. |
Cache Hits/sec Read | Total Read Hits for interval/length of interval in seconds. |
Cache Hits/sec Write | Total Write Hits for interval/length of interval in seconds. |