Reply to post:

This storage startup dedupes what to do what? How?

mikejs

As I understand it for the netapp, only newly written blocks are looked at by the dedupe process. If a block has the same hash but different contents to an existing block, then I think it just marks it as having been processed, and thereafter no longer considers it a newly written block.

There's an initial pass over the whole volume when turning dedupe on, but the same principle applies - if the hashes match, and the contents match, it gets deduped, otherwise it's marked as having been processed and isn't looked at again until the contents change.

POST COMMENT House rules

Not a member of The Register? Create a new account here.

  • Enter your comment

  • Add an icon

Anonymous cowards cannot choose their icon

SUBSCRIBE TO OUR WEEKLY TECH NEWSLETTER

Biting the hand that feeds IT © 1998–2020