ss026230
1 Copper

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

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5 Replies
umichklewis
4 Tellurium

Re: Maximum FA Port utilization Limit on VMAX 20K.

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

ss026230
1 Copper

Re: Maximum FA Port utilization Limit on VMAX 20K.

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

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umichklewis
4 Tellurium

Re: Maximum FA Port utilization Limit on VMAX 20K.

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

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Fenglin1
4 Beryllium

Re: Maximum FA Port utilization Limit on VMAX 20K.

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

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sauravrohilla
3 Cadmium

Re: Maximum FA Port utilization Limit on VMAX 20K.

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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