7.2.3 Setting Monitoring Intervals

Enter the interval at which performance information is secured in the ETERNUS Disk storage systems and Fibre Channel switch common settings. You can specify 5, 10, 30, 60, 300, or 600 seconds as the interval. However, intervals that can be specified vary depending on device models and the number of Logical Volumes indicating performance level being maintained.

If "All" is selected for the scope of the monitoring volumes, this product automatically changes the monitoring interval according to the number of monitoring volumes.
If it is not possible to monitor at the specified monitoring interval by adding monitoring volumes, the monitoring interval is automatically lengthened. After that, if it is possible to shorten the lengthened monitoring interval by reducing monitoring volumes, the monitoring interval is automatically shortened. However, the monitoring interval cannot be shorter than the initially specified Minimum Monitoring Interval Time.

Monitoring Condition		Specifiable Interval (Seconds)
Device Model Name	Number of Logical Volumes Whose Performance Is Maintained	5	10	30	60	300	600
ETERNUS DX60 S5/S4/S3 ETERNUS DX100 S5/S4/S3 ETERNUS DX200 S5/S4/S3 ETERNUS AF150 S3 ETERNUS AF250 S3/S2 ETERNUS AF250 ETERNUS DX200F	1,472 or less	N/A	N/A	A	A	A	A
	1,473 to 3,200	N/A	N/A	N/A	A	A	A
	3,201 or more	N/A	N/A	N/A	N/A	A	A
ETERNUS DX500 S5/S4/S3 ETERNUS DX600 S5/S4/S3 ETERNUS AF650 S3/S2 ETERNUS AF650	1,024 or less	N/A	N/A	A	A	A	A
	1,025 to 2,752	N/A	N/A	N/A	A	A	A
	2,753 to 11,072	N/A	N/A	N/A	N/A	A	A
	11,073 or more	N/A	N/A	N/A	N/A	N/A	A
ETERNUS DX900 S5 ETERNUS DX8000 S4 series ETERNUS DX8000 S3 series	3,200 or less	N/A	N/A	A	A	A	A
	3,201 to 12,416	N/A	N/A	N/A	A	A	A
	12,417 or more	N/A	N/A	N/A	N/A	A	A
ETERNUS DX60 S2	128 or less	A	A	A	A	A	N/A
	129 to 2,048	N/A	N/A	A	A	A	N/A
	2,049 or more	N/A	N/A	N/A	A	A	N/A
ETERNUS DX80 S2/DX90 S2	No limitation	N/A	N/A	A	A	A	N/A
ETERNUS DX400 S2 series ETERNUS DX8100 S2	1,024 or less	N/A	N/A	A	A	A	A
ETERNUS DX400 S2 series ETERNUS DX8100 S2	1,025 or more	N/A	N/A	N/A	A	A	A
ETERNUS DX8700 S2	1,024 or less	N/A	N/A	N/A	A	A	A
	1,025 to 8,192	N/A	N/A	N/A	N/A	A	A
	8,193 to 16,384	N/A	N/A	N/A	N/A	N/A	A
Brocade series	-	A	A	A	A	N/A	N/A

A=Available, N/A=Not Available

Point

In LAN traffic or cross-subnet (where there is a gateway between the performance monitoring target device and the Management Server) situations, it may not be possible to obtain the performance information inside the monitoring interval that was set. Change the monitoring interval when you cannot acquire performance information on each monitoring interval.

Note

The Fibre Channel switch and Fibre Channel switch blade as shown in the table below, set a monitoring interval according to the FC transfer rate. If this setting is incorrect, it might not be possible to obtain the correct performance value from the device.

Device Model Name	Monitoring Interval	Transfer Rate
Brocade Fibre Channel switch (excluding switches in which the maximum transfer speed of the FC port is 16 Gbps or faster) PRIMERGY Fibre Channel switch blade	5 seconds	1 - 25 Gbps
	10 seconds	1 - 12 Gbps
	30 seconds	1 - 4 Gbps
	60 seconds	1 - 2 Gbps

On the performance information for the number of active disks, power consumption and temperature, the performance monitoring interval sets 60 seconds if its interval is set to shorter than 60 seconds.
When performing performance management for Brocade series managed by SNMPv3 protocol, it is required to change the monitoring interval of Brocade series according to the number of managed devices.
Set monitoring interval to a value larger than the value calculated by the following formula.
If the calculated value is 60 or more, set monitoring interval to 60 seconds.
```
Calculated value = a + b * 2
```
a: Total number of Disk storage systems, All-Flash Arrays, and Brocade series, which are managed by SNMPv3 protocol.
b: Number of devices whose performance is managed among Brocade series, which are managed by SNMPv3 protocol.
In the following example, a calculated value is 7 and set monitoring interval to 10, 30, or 60 seconds:
- The total number of Disk storage systems, All-Flash Arrays, and Brocade series, which are managed by SNMPv3 protocol, is 3.
- The number of devices whose performance is managed among Brocade series, which are managed by SNMPv3 protocol, is 2.
```
Calculated value = 3 + 2 * 2
```

Since the performance management unit is started as a daemon of the Management Server, the unit continues obtaining performance information while the Management Server is active, without starting Web Console.

The logical configuration of the storage device is recognized, and the obtaining of performance information starts. At the start of obtaining performance information of the selected storage system, an amount of time (tens of seconds to several minutes) is spent to obtain the logical configuration before any performance information is actually obtained.

Performance monitoring status, description and action are described as follows:

Performance Monitoring Status	Description	Action
Monitoring	Shows that performance monitoring works normally.	No action is required.
Recovering	Shows that performance monitoring is in recovery state.	Management Server cannot communicate to devices. Check the network and device conditions. If logged on to ETERNUS Web GUI, log off from it.
Error	Shows that performance monitoring is in error state.	It is possible that writing to performance information file failed. Check the write access to file and the file system capacity and then perform the following steps. Refer to "7.2.10 Performance Data" for the location to store performance information file in: Record the performance monitoring settings contents <Recorded settings contents> Interval before obtaining performance information (in seconds) Performance monitoring targets (only for ETERNUS Disk storage system. Minimum LUN_V, Maximum LUN_V) Stop performance monitoring Refer to "7.2.8 Instruction for Stopping Performance Management". Start performance monitoring based on the settings contents recorded in step 1 Refer to "7.2.2 Instruction for Performance Management" and "7.2.3 Setting Monitoring Intervals". If despise of the above steps having been taken, any performance monitoring error is not resolved, internal error may be occurring. Contact Fujitsu Technical Support.

Performance Monitoring Status

Description

Action

Monitoring

Shows that performance monitoring works normally.

No action is required.

Recovering

Shows that performance monitoring is in recovery state.

Management Server cannot communicate to devices. Check the network and device conditions.

If logged on to ETERNUS Web GUI, log off from it.

Error

Shows that performance monitoring is in error state.

It is possible that writing to performance information file failed. Check the write access to file and the file system capacity and then perform the following steps. Refer to "7.2.10 Performance Data" for the location to store performance information file in:

Record the performance monitoring settings contents
<Recorded settings contents>
- Interval before obtaining performance information (in seconds)
- Performance monitoring targets (only for ETERNUS Disk storage system. Minimum LUN_V, Maximum LUN_V)
Stop performance monitoring
Refer to "7.2.8 Instruction for Stopping Performance Management".
Start performance monitoring based on the settings contents recorded in step 1
Refer to "7.2.2 Instruction for Performance Management" and "7.2.3 Setting Monitoring Intervals".

If despise of the above steps having been taken, any performance monitoring error is not resolved, internal error may be occurring. Contact Fujitsu Technical Support.