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  3. April 2016

Re: USB drive on the i

Agree, one should be very careful on that setup - and a mirrored environment is still highly recommended.
The only advantage of ZFS is using a slight compression to reduce the amount of disk accesses
(converting 528b IBM i blocks to 512b physical blocks). To increase performance, one can add some
disks to IBM i which are provided by an SVC cluster.

ZFS with loads of IBM i writes can be pain, yes…

-h



Am 27.04.2016 um 21:59 schrieb DrFranken <midrange@xxxxxxxxxxxx>:

I am also not at all comfortable with IBM i's single level store on a ZFS file system as I have yet to wrap my head around the vast differences between them and the potential performance implications there. Plus if your ZFS file system reboots for any reason things from the past can return, it's part of the way ZFS works! (I'm not going to explain that here) How would IBM i react to block of data reverting? Damaged objects come to mind.



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