On Apr 28, 2006 09:07 +0200, PFC wrote: > While I like the idea, the iram implementation is horrible for > various reasons : > > - no ECC
I don't know why people are so keen on ECC RAM. Why not just put an extra socket on the board and run the RAM in "RAIM" (RAID for Memory) mode? The incremental cost of ECC vs. regular RAM is FAR more than the cost of just getting the extra stick of RAM. Also, with RAIM you could even hot-swap a failing DIMM, while with ECC you have to take an outage to get back to redundancy. > - It uses SATA hence only a very little part of the RAM speed is > used, and large latencies are introduced. Ah, but if you can connect the RAM to multiple machines, you could at least have the hope of hot failover for the storage to another server. That isn't something you can do with a bus-attached device. Even the chance of any recovery is far better with such a setup (i.e. plug into another system after motherboard dies), since you can at least get access from another machine. Cheers, Andreas -- Andreas Dilger Principal Software Engineer Cluster File Systems, Inc.
