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RF2 2 or 3 copies of data

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Outrider

RF2 2 or 3 copies of data

Need to know when we say RF2 how many copies of data A will be created? one copy i.e. one primary original data & secondary one. Or one primary orignal data & 2 secondary copies.

Thanks
Vivek
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Moderator Moderator
Moderator

Re: RF2 2 or 3 copies of data

RF 2 = 2 copies

 

RF 3 = 3 copies.

 

i.e: RF2 for random-file-name-here.exe, which is 10G would take up 20G of storage

 

RF3 for that same file would be 30G of storage

 

This assumes no data reduction, or use of erasure coding.

 

Erasure coding, Compression, Dedupe, and Zero suppression could make that 20G (or 30G) of storage much, much, much less

Jon Kohler | Principal Architect, Nutanix | Nutanix NPX #003, VCDX #116 | @JonKohler
Please Kudos if useful!
3 REPLIES
Highlighted
Moderator Moderator
Moderator

Re: RF2 2 or 3 copies of data

RF 2 = 2 copies

 

RF 3 = 3 copies.

 

i.e: RF2 for random-file-name-here.exe, which is 10G would take up 20G of storage

 

RF3 for that same file would be 30G of storage

 

This assumes no data reduction, or use of erasure coding.

 

Erasure coding, Compression, Dedupe, and Zero suppression could make that 20G (or 30G) of storage much, much, much less

Jon Kohler | Principal Architect, Nutanix | Nutanix NPX #003, VCDX #116 | @JonKohler
Please Kudos if useful!
Outrider

Re: RF2 2 or 3 copies of data

mean to say for

 

RF2: orignal data instance + one copy of it

RF3: Orignal data instance + 2 copies of it

 

right?

Thanks
Vivek
Guardian

Re: RF2 2 or 3 copies of data

Yes. And pieces of those copies are scattered throughout the cluster but never on the same node as the original.