Measures reported by SynNasStrPerfTest
This test auto-discovers the disks and reports how well the I/O operations were performed on each disk. In addition, this test also reports the percentage utilised while performing I/O operations for each disk.
Outputs of the test : One set of results for each disk inserted in the Synology storage system being monitored.
Descriptor of the test : Disk
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 device. |
KB/sec |
Compare the value of this measure across disks to know which disk 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 disks. |
| IO_writes |
Indicates the rate at which data was written into this device. |
KB/sec |
Compare the value of this measure across disks to know which disk 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 disks. |
| IO_read_access |
Indicates the number of times data was read from this device. |
Accesses/sec |
|
| IO_write_access |
Indicates the number of times data was written into this device. |
Accesses/sec |
|
| Disk_load |
Indicates the percentage of space usage on each disk. |
Percent |
A value close to 100% for this measure is a cause for concern, as it indicates over-utilization of disk. This can seriously degrade system performance. |
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