Richard,
On 8/2/06 11:37 AM, "Richard Elling" <[EMAIL PROTECTED]> wrote: >> Now with thumper - you are SPoF'd on the motherboard and operating >> system - so you're not really getting the availability aspect from dual >> controllers .. but given the value - you could easily buy 2 and still >> come out ahead .. you'd have to work out some sort of timely replication >> of transactions between the 2 units and deal with failure cases with >> something like a cluster framework. > > No. Shared data clusters require that both nodes have access to the > storage. This is not the case for a thumper, where the disks are not > dual-ported and there is no direct access to the disks from an external > port. Thumper is not a conventional highly-redundant RAID array. > Comparing thumper to a SE3510 on a feature-by-feature basis is truly > like comparing apples and oranges. That's why Thumper DW is a shared nothing fully redundant data warehouse. We replicate the data among systems so that we can lose up to half of the total server count while processing. Basket of Apples >>> one big apple with a worm in it. - Luke _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
