Hello andy, al> Can I export NAS B as a SAN or ISCSI target, connect the two machines Am I right in the assumption that your NASes are Linux boxes? :) Did you take a look at Linux "Network block devices" (nbd/enbd)? They might be what you need: you'd get a raw device on one of the servers to use in a mirror along with a local device. The NBD page mentioned some setups for high-availability services where an active server clones itself to a backup server and vice-versa, whichever was active most recently. I'm not sure about performance though... al> with, say, mryinet cards or 10 GbE TOE cards, mount the NAS B volume on al> NAS A, and create a RAID-1 mirror of the two volumes? Is this kind of al> thing done? Are you sure you need 10GbE? My experience with a 10-drive 3Ware 8506 array in RAID5 shows that reads from it usually fit in 500-700Mbit/s. And it's a very busy popular fileserver, so I guess it's close to the hardware limits of our array. -- Best regards, Jim Klimov mailto:klimov@xxxxxxxxxxx - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
