October 10, 201213 yr I have one server running for almost a year now. It consists of a HP EX490 housing holding the parity, cache and 2 data disks plus a SANS Digital 5 bay eSATA tower with 5 data disks. I want to move these datadisks containing over 10 TB of data to a newly built server which already holds 4 datadisks with total about 3 TB of data. What would be the the best way of doing this? I think moving everything incl. usb stick with unraid from the EX490 "combo" to the new case plus motherboard (a parity check has just finished), testing if everything is still working and then adding the other 4 datadisks. I hope unraid won't clear this 4 disks. If you just add them, it WILL clear them. Instead, after adding them, but BEFORE starting the array you must set a new disk configuration. (This will immediately invalidate parity) All disk indicators will turn "blue" indicating they are new disks. You might want to initially un-assign the parity drive before setting a new-config. This will lessen the chance unRAID will clear any disks as it only does then when parity is currently established. Once all the data disks are assigned, new config pressed, ant eh the array online with only data disks you can stop it, assign the parity disk, and let it calculate the initial parity for the new disk configuration. Joe L. When you then start the array parity will be calculated on the new disk configuration.
October 11, 201213 yr Author Thanks Joe, for your remarks. So, it is allways so that when the parity disk is unassigned a disk will not be cleared when a new config is set? Even when such a disk hasn't be precleared before? All disks have been used in a unraid server and therefore have a Reiser filesysten and contain data. That is why I don't want them cleared. My steps then would be: make a backup of all data on the cache drive (apps and other stuff) init config add only the data disks from both servers ( I use 5.0 RC8a, disks should be assigned correct I presume) add a parity disk and rebuilt parity. add cache drive. Am I going too quick and missing something?
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