It is easy and simple to build fully redundant iscsi network which will deliver and cost much less than FC. Also troubleshooting is pretty easy. iSCSI can be a really good choice if the design is right. There are many factors involved. You cannot simply ask "iscsi or fc?" On Apr 30, 2012 4:01 p.m., "Jussi Silvennoinen" < [email protected]> wrote:
> Hi all, >>>> >>>> I'm going to plan the setup of a database-server (MySQL) and now a >>>> discussion started about >>>> how the storage should be connected. Some favour iSCSI, >>>> >>> others NFS (V4). >>> >>>> >>>> What's your opinion? Where are advantages / disadvantages? >>>> >>> Which solution >>> >>>> would promise >>>> most performance? >>>> >>> >>> Curious, SAN is not in your list at all. Why? >>> How important is your service availability to you? >>> >> >> Hi Jussi, >> >> it's also in discussion :) And sure, the service IS important, database >> will be for mailbox-servers (Zarafa). >> >> Currently we're focusing on iSCSI vs. NFS as we don't have FC-equipment >> but already have 10Gbit ethernet.. >> > > I've gotten in to my flame retardant gear so here goes. > > Ethernet ís single fabric meaning a single admin error or unexpected end > result of plugging new gear to it can bring the whole shebang down. > Post-failure less than joyful consistency check marathon is sure to follow. > > For me, that is unacceptable. I'd rather be enjoying my beer at the local > pub instead. FC SAN being multi-fabric, you have to try really hard to > break everything. > > Whatever the transport technology is based on, ethernet, FC or snails on > steroids, if it has multiple independent fabrics, I'm willing to listen. > Otherwise, I'll pass. > > I really don't see any need or use for FCoE. I do like the idea of a > single communications channel (redundant) but FCoE is a poor excuse for a > solution towards that. iSCSI is much simpler protocol but suffers the same > single fabric shortcoming. > > Perhaps there are ways out there to do ethernet-based blockstorage > reliably that other list members know about, I'd certainly want to know > about them. > > > > -- > > Jussi > _______________________________________________ > rhelv6-list mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/rhelv6-list > >
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