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 Post subject: CPG change disk filter of active CPG with exported VV
PostPosted: Sun Aug 04, 2019 9:38 am 

Joined: Sun Aug 04, 2019 9:26 am
Posts: 8
Hi all,

I would like to know if it's possible to change disk filter of active CPG with exported live virtual volumes?
Somehow I missed this step and CPG now take all FC disks and I want to take FC that the chunklets grater than 546GB, attached print screen with existing CPG,

Thanks in advance!


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 Post subject: Re: CPG change disk filter of active CPG with exported VV
PostPosted: Mon Aug 05, 2019 12:13 am 

Joined: Mon Sep 21, 2015 2:11 pm
Posts: 975
Location: Europe
Yes, but change will only have any effect on new LDs created. Just changing it will not fix existing layout without running tunesys.

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 Post subject: Re: CPG change disk filter of active CPG with exported VV
PostPosted: Mon Aug 05, 2019 10:59 am 

Joined: Sun Aug 04, 2019 9:26 am
Posts: 8
Is the "tunesys" has impact on performance or latency during this operation? any impact of SQL DB performance?


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 Post subject: Re: CPG change disk filter of active CPG with exported VV
PostPosted: Mon Aug 05, 2019 2:58 pm 

Joined: Mon Sep 21, 2015 2:11 pm
Posts: 975
Location: Europe
Sagi wrote:
Is the "tunesys" has impact on performance or latency during this operation? any impact of SQL DB performance?


As with every question relating to performance, it depends. It will read and re-write all data that needs to be changed.

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The views and opinions expressed are my own and do not necessarily reflect those of my current or previous employers.


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 Post subject: Re: CPG change disk filter of active CPG with exported VV
PostPosted: Mon Aug 05, 2019 3:19 pm 

Joined: Sun Aug 04, 2019 9:26 am
Posts: 8
MammaGutt, thank you!


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 Post subject: Re: CPG change disk filter of active CPG with exported VV
PostPosted: Thu Aug 08, 2019 10:18 am 

Joined: Wed Jan 16, 2019 4:26 pm
Posts: 28
Location: Florida
Sagi wrote:
Is the "tunesys" has impact on performance or latency during this operation? any impact of SQL DB performance?
My experience is that tunesys will have a measurable but not severe impact. It's easy enough to cancel if it turns out to be unacceptable..


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 Post subject: Re: CPG change disk filter of active CPG with exported VV
PostPosted: Thu Aug 08, 2019 3:24 pm 

Joined: Sun Aug 04, 2019 9:26 am
Posts: 8
richard612 wrote:
Sagi wrote:
Is the "tunesys" has impact on performance or latency during this operation? any impact of SQL DB performance?
My experience is that tunesys will have a measurable but not severe impact. It's easy enough to cancel if it turns out to be unacceptable..

Thnak you richard612!


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