Hello all again. Extending from an earlier question: "deliberately degrading RAID1 to a single disk, then back again" I got some useful answers, which I appreciate. Taking this the next step, I want to create a RAID10 using 4 disks on a CentOS install I also want to be able to stop and remove a pair of disks periodically , so I ma y exchange them as backup media. Then add new disks and re-start it. First challenge I see is the actual RAID10 creation in the install. Second challenge is the syntax to stop the (correct) pair of disks and remove them, then re-add them and restart the array so that is re-synchs. Can anyone lend me some syntax and tips please? -- With our best regards, Maurice W. Hilarius Telephone: 01-780-456-9771 Hard Data Ltd. FAX: 01-780-456-9772 11060 - 166 Avenue email:maurice@xxxxxxxxxxxx Edmonton, AB, Canada http://www.harddata.com/ T5X 1Y3 - 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