Hello, I intend to run LVM on top on a software RAID5 on top of 8 IDE-disks (with 2MB cache) on 4 IDE-controllers (yes, I know it's not a reliable...) Kernel 2.4.25 is used. I'm going to use ReiserFS as filesystem, which uses a block size of 4k. If I've understand this correctly I'll need to use a PE-size of at least 32MB to be able to support LVs up to 2TB. How do I calculate the most optimal chunk-size on this system? Thanks in advance, /LM - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html