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Dedupe Disk Library workload caracteristica

  • April 15, 2025
  • 1 reply
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S
Byte
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Hello all,

 

currently we are facing some performance issues with our disk library, which is a CIFS share provided by our central storage system/appliance.
To run some analysis or to troubleshoot the problem further, we thought about to run some tools like IOmeter against the storage system an see how it performs.

The question which we are now facing is how we have to configure the tool regarding the workload/storage caracteristica which commvault is creating for a storage system and a deduped library type?

for example:

80% read
20% write
4KB IO block size
70% random
30% sequential

and so on if there are any other values which should be considered.

 

Many thanks and regards

Skoomer

Best answer by Jon Vengust

Hi skoomer,

 

Hope you’re doing well.

 

Documentation is available for running IOMeter against mount paths (Link: https://documentation.commvault.com/2024e/expert/testing_iops_for_disk_library_mount_path_with_iometer.html). However, against a CIFS share specifically I would naturally anticipate some degradation due to the hops involved regardless.

 

How severe are your performance concerns? Have you been able to perform a simpler Storage Validation operation first? Source: https://documentation.commvault.com/2024e/expert/validating_mount_path_01.html

 

This will provide you with a baseline read/write expectation when it comes to the mount path.

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Jon Vengust
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Hi skoomer,

 

Hope you’re doing well.

 

Documentation is available for running IOMeter against mount paths (Link: https://documentation.commvault.com/2024e/expert/testing_iops_for_disk_library_mount_path_with_iometer.html). However, against a CIFS share specifically I would naturally anticipate some degradation due to the hops involved regardless.

 

How severe are your performance concerns? Have you been able to perform a simpler Storage Validation operation first? Source: https://documentation.commvault.com/2024e/expert/validating_mount_path_01.html

 

This will provide you with a baseline read/write expectation when it comes to the mount path.

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