On 30/01/2010 09:26, Malte Schirmacher wrote:
Mirko wrote:
Hi,
I'm atmost ready to deploy my new homeserver for final testing.
Before I want to be sure that nothing big is left untouched.
Reading ZFS Admin Guide About the checksum method, there's no advice
about it.
The default is fletcher4. there's also SHA256
Now the sha256 is pretty 'heavy' to calculate, so I think that it's
left out because can impact the performance in some significative way.
right ?
You probably want to read
http://blogs.sun.com/bonwick/entry/zfs_dedup
and also:
http://blogs.sun.com/darren/entry/improving_zfs_dedup_performance_via
If you aren't doing dedup it almost comes down to wither or not you have
the CPU cycles, chances are on a home server you probably do if you are
using any recentish Intel or AMD CPU and all you are doing is serving up
NAS/iSCSI. If the machine does something else then you may want to
choose fletcher4 rather than sha256, but it really depends on how much
read and write of data you do etc etc.
--
Darren J Moffat
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