Sun Storage 5210 NAS Appliance
 
Sun Storage 5220 NAS Appliance
 
Sun Storage 5310 NAS Appliance
 
Sun Storage 5320 NAS Gateway/Cluster System
 
Sun Storage 5320 NAS Appliance
 
Sun Storage 5310 NAS Gateway System
 

GCS>Sun Microsystems>Storage - Disk>Network Attached Storage
 

• Performance issues

 To access the Activity Monitor, proceed as follows:

• Open a telnet or ssh connection to the NAS
• If running an OS version prior to 4.21, enter admin at the [menu] prompt.
• Enter the administrator password
• Enter menu
• Select option 1.

The activity monitor screen looks like this:

-------------------------------------------------------------------------------
Nastest               StorageTek 5320 NAS Activity Monitor
Volume        Use% Reqs |Device     Load  Peak |Client    Reqs |Client    Reqs
/vol1          11%      |cpu1         55    82 |sol10-9-2 28454|
/vol2          52%      |memory     4812  6020 |sol10-9-3 51873|
/vol3          34% 13000|emc1       1000  9348 |sol10-9-4 12335|
/vol4          71% 12000|emc2                  |sol10-9-5      |
/bigvol        41%      |emc3        330   330 |               |
/biggervol     21%      |emc4                  |               |
/test          65%      |ide1d1                |               |
|isp1          5    18 |               |
|isp1d000              |               |
|isp2d041              |               |
|isp2          5    18 |               |
|                      |               |
|                      |               |
|                      |               |
|                      |               |
|                      |               |
|                      |               |
|                      |               |
-------------------------------------------------------------------------------
Log: 09/27/07 02:50:43 I telnetd: close 129.123.91.23 to admin

ESC for Menu    reqs/sec 4623.0   Up 125d 15:01  3:32:40 27-Sep-2007  CPU: 55%

The first column shows all volumes created on the storage, the percentage used, and the number of requests in the last ten seconds. The percentage of disk space used is very important to performance. It is recommended that this be kept below 70% for each volume. If volume utilization exceeds this level, CPU utilization increases and performance on this volume decreases, becoming worse as the volume reaches 100%.

The second column shows all of the key system devices, such as CPU, memory, network interfaces (em*) and controllers. Most of the peak and load numbers are useful only for internal comparison, i.e. to earlier numbers from the same system.

The last two columns list connected clients and requests in the last ten seconds for each. In some cases, a malfunctioning or unauthorized client may be found in this section that is generating an unusually large number of requests and utilizing up system resources.

Finally, at the bottom of the screen, you will find the most recent system log message, overall requests per second, uptime, date, time and CPU utilization. The CPU utilization can be found in the lower right corner, listed as a percentage.

High CPU utilization, even sustained 100% CPU utilization, is not necessarily indicative of a problem with the NAS. It is quite possible that the CPU is simply very busy serving data, or that the installed NAS configuration is underpowered for the customer environment.

However, when the high CPU utilization is combined with poor performance or a near-hang condition, it may be an indication that there is a problem with running processes. The system diagnostics contain detailed information on these processes.

If additional analysis from Sun Support is required, capture a system diagnostic while the event is occurring. If the system is rebooted, it will be too late to retrieve this data.

Your Support Engineer may also ask for Shared Shell remote access to the system at this point, for detailed analysis beyond what is available from the system diagnostics. Again, this will need to be done while the problem is present.

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