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Measures reported by SynNasStrPerfTest
This test auto-discovers thevolumes on the target storage system and for each volume, reports the load, the I/O operations that are performed. In addition, this test also reveals the number of times read and write operations were performed on the volume. Using this test, administrators can figure out the volume that is busy processing I/O requests. This test also pinpoints to the volume that is over-utilized in terms of load.
Outputs of the test :One set of the results for each volume on the target Synology NAS storage system that is being monitored.
The measures made by this test are as follows:
| Measurement |
Description |
Measurement Unit |
Interpretation |
| IO_reads |
Indicates the rate at which data was read from this volume during the last measurement period. |
KB/sec |
Compare the value of this measure across disks to know which volume handled the maximum number of read
requests and which handled the least. If the gap between the two is very high, then it indicates serious irregularities in load-balancing across volumes. |
| IO_writes |
Indicates the rate at which data was written to this volume during the last measurement period. |
KB/sec |
Compare the value of this measure across disks to know which volume handled the maximum number of write
requests and which handled the least. If the gap between the two is very high, then it indicates serious irregularities in load-balancing across volumes. |
| IO_read_access |
Indicates the number of times read data was accessed from this volume per second during the last
measurement period. |
Accesses/sec |
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| IO_write_access |
Indicates the number of times write data was accessed from this volume per second during the last
measurement period. |
Accesses/sec |
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| Disk_load |
Indicates the utilization of this volume, in percentage. |
Percent |
A value close to 100% for this measure is a cause for concern, as it indicates over-utilization of volume. This can seriously degrade the performance of the storage system. |
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