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Bhuppi1

2 Intern

 • 

130 Posts

62

February 11th, 2025 21:09

SRDF/A Cache Usage

Hello. Is there exists a symCLI( V9.2.3.1) command which can tell how much cache is being used by SRDF/A. Using SE(SymCLI) we know the Total Cache Size, Available Cache, Max. System/Device Write Pending Cache. And, with latest updated SE, we can also see Replication Usage (Percent) and Max # of Replication Cache Slots. But it shows both these two values as 0 or Not Available. How is it possible that Replication Usage is not there when we have SRDF/A running all the day. Not possible and true. 
So, how to find out the SRDF/A cache usage. Or, how to find out Snow Cache Usage and Max Cache Usage. Any way to determine that via CLI or GUI etc.
In earlier days there used to a symstat -type CACHE -g DG_Name switch to get  Snow Usage. What happened to that as that doesn't work now. If it was discontinued in new SE/CLI, what is the new command currently.  Thanks.

Bhuppi1

2 Intern

 • 

130 Posts

February 13th, 2025 17:17

Additional question:  SE 9.2 SRDF Family CLI guide says this:

Arrays running HYPERMAX OS come preconfigured with one or more Storage Resource Pools (SRPs) containing all the storage available to the array. SRDF/A DSE allocations are made against one SRP per array designated as the SRP for DSE.
The default SRP for DSE is the default SRP for FBA devices. The default SRP associated with DSE is configured prior to installation.
Also, it seems default SRP itself will act as a DSE.  Or, does this means default SRP will act as a DSE, but one does need to create a specific DSE Pool in it with atleast single savedev as well. 
How to confirm this.   Thanks.

Bhuppi1

2 Intern

 • 

130 Posts

February 11th, 2025 21:51

And additional query to the above ask:

How to determine if 'Transmit Idle'  & 'DSE' has been enabled in our SRDF/A setup. Thanks.

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