On Wed, Jan 21, 2015 at 6:45 PM, Predrag Punosevac <[email protected]> wrote:
> Matthias Play wrote: > > > Hi Mehmet, > > > > thanks for your quick reply and suggestions! > > > > I would prefer to also always have a 1:1 copy of the OS part, because I > > also want to avoid exactly what you described i.e., do an extra install > > and configuration. > > > > It would maybe be sufficient to only do a cpdup from time to time to > > keep the OS copy up to date. I think this could be a good compromise. > > > > Regards > > Matthias > > Well the "correct" way to build the NAS would be to install DF on two > embedded SSDs and have data on regular HDDs as Mehmet suggested. One > would want to have RAID 1 on those two embedded SSDs or two have HAMMER > mirror stream. Unfortunately AFAIK current installer supports neither. > On the top of it HAMMER slave drive is read only so it would take human > intervention to have a "graceful" failover in the case one HDD dies. > My understanding that HAMMER2 will not have that problem as the slave > will be writable. > > Yes DF could be molded into wonderful NAS product with little bit of > corporate backing :) > > Cheers, > Predrag > > The installer is not very much a problem : First install operating system on a disk or some more ( dd may be used ) as kept spare . After installation of the operating system , attach ( other ) disks for data storage and make a file system on them . Advantage of separation of operating system from data disks is defined in my first message : In that way any operating system change will not affect data disks . Installation of a new version of operating system on existing data disks requires save and restore of existing data ( or install on another computer and copy existing data ) . When size of data is large , such an operation may require days . Thank you very much . Mehmet Erol Sanliturk
