Home > Storage > PowerScale (Isilon) > Product Documentation > Storage (general) > PowerScale: Beginner’s Guide to PowerScale KPI Performance Metrics > Introduction
The following tables provide a KPI summary.
Protocol |
High performance |
Medium performance |
General performance |
SMB |
<= 10 ms |
<= 15 ms |
<= 20 ms |
NFS |
<= 5 ms |
<= 10 ms |
<= 20 ms |
HDFS |
|
|
<= 10 seconds |
Variance between nodes |
Ideal |
Acceptable |
Average network throughput/node |
+/- 3% |
+/- 10% |
Client count (connected and active) |
+/- 3% |
+/- 10% |
Protocol |
Active clients per node |
Connected clients per node |
NFSv3 |
1000 |
Limited by available sockets |
NFSv4 |
1000 |
Limited by available sockets |
SMB1 |
1000 |
2000 |
SMB2 |
3000 |
27000 |
SMB3 |
3000 |
27000 |
General |
Ideal |
Good |
Acceptable |
Disk I/O queue time |
<= 1 ms |
<= 4 ms |
<= 8 ms |
CPU utilization/node |
N/A |
N/A |
<= 60% |
External network errors |
0 |
N/A |
< 1/day average |
Cluster storage capacity |
<= 80% |
N/A |
<= 85% |