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Antonio_nm
4 Posts
0
2271
March 2nd, 2011 09:00
Problems using CPP instead of CPM
Hi all.
Currently we have two Centeras configured in "mirroring" mode. Is there any problem if we re-configure them in "parity" mode? What's the disadvantage of using CPP instead of CPM?
I suppose parity mode is slower (reading and writing) because of the parity calculations.
Is there a way to migrate data stored in CPM mode to CPP? If it's not, i suppose that only new data will be stored in CPP mode.
Thanks a lot.
Antonio_nm
4 Posts
232
0
Posted March 2nd, 2011 10:00
Hi Paul. Thank you for the answer.
How can i know the "CPP threshold"? Is it the same for all Centeras?
I read (in other discussion) the CPP threshold is 256k, isn't it?
mckeown_paul
409 Posts
232
1
Posted March 2nd, 2011 10:00
it is configurable but normally its not changed from 256KB
centeraviewer can be used to check
mckeown_paul
409 Posts
232
1
Posted March 2nd, 2011 09:00
If you change the clusters to CPM then any new content bigger than the CPP threshold will be written as CPP any smaller will still be CPM. All CDFs will be CPM anyway
There is no way at present to change existing content