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December 11th, 2013 03:00

Maximum FA Port utilization Limit on VMAX 20K.

Hi All,

What is the Maximum IOPS in Vmax 20k for FA ports .

Example we have FA -3E ports with utilization as below:

05:32:04    DIRECTOR    PORT      IO/sec     Kbytes/sec

05:33:05      FA-3E        0         359           7390

05:33:05      FA-3E        1         976          21526

05:34:06      FA-3E        0         237           3906

05:34:06      FA-3E        1         907          16248

Any way to find which type of IOPS its read hit/miss or WP etc.

Thanks and regards,

Santosh S

1.2K Posts

December 12th, 2013 09:00

Looking at the output above, you're running a command like:

$ symstat -i 60 -type PORT -sid 1234 -dir 7E

12:37:19    DIRECTOR    PORT      IO/sec     Kbytes/sec

12:38:19      FA-7E        0          51            106

12:38:19      FA-7E        1         212           1970

12:39:19      FA-7E        0          11             16

12:39:19      FA-7E        1          61            586

12:40:19      FA-7E        0          48             94

12:40:19      FA-7E        1          44            560

12:41:19      FA-7E        0          34             56

12:41:19      FA-7E        1          10             92

Which is reporting I/O against the VMAX front-end ports.  To see read/writes, change the command from "PORT" to "REQUEST":

$ symstat -i 60 -type REQUEST -sid 1234 -dir 7E

         DIRECTOR     IO/sec     Cache Requests/sec   % RW

12:40:26                        READ   WRITE      RW  Hits

12:41:26 FA-7E            76       1      54      56    98

12:42:26 FA-7E           102       1      82      84   100

12:44:16 FA-7E           107       3      72      75    99

12:45:16 FA-7E           163       8     129     137    96

12:46:16 FA-7E           125       8      97     105    95

You can find more information in the Solutions Enabler Command Reference.  Let us know if this helps!

Karl

8 Posts

December 12th, 2013 17:00

Thank you , if possible can you provide any document regarding symstat commands.

1.2K Posts

December 13th, 2013 11:00

Go to support.emc.com and search for Solutions Enabler Symmetrix Array Management 7.6 CLI.  This covers a great deal of information about various symstat commands.

Let us know if that helps!

Karl

2.1K Posts

December 15th, 2013 19:00

See Monitoring Symmetrix Performance using symstat CLI which also provide how to use the symstat CLI

859 Posts

December 16th, 2013 01:00

Try SPA or UniVMAX to get these details. You can see the real time details along with historical and future prediction.

regards,

Saurabh

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