Hello,I have a hypothetical question regarding ZFS reduplication. Does the L1ARC cache benefitfrom reduplicationin the sense that the L1ARC will only need to cache one copy of the reduplicated dataversus many copies? Here is an example:Imagine that I have a server with 2TB of RAM and a PB of disk
Unfortunetly the answer is no. Neither l1 nor l2 cache is dedup aware.
The only vendor i know that can do this is Netapp
In fact , most of our functions, like replication is not dedup aware.
However we have significant advantage that zfs keeps checksums regardless of
the dedup being on and
On 12/ 7/11 05:12 AM, Mark Creamer wrote:
I'm running OI 151a. I'm trying to create a zone for the first time,
and am getting an error about zfs. I'm logged in as me, then su - to
root before running these commands.
I have a pool called datastore, mounted at /datastore
Per the wiki document
It was my understanding that both dedup and caching work on
block level. So if you have identical on-disk blocks (same
original data past same compression and encryption), they
turn into one(*) on-disk block with several references from
DDT. And that one block is only cached once, saving ARC
