March 6, 201610 yr Hi, I need some information of a pro. I have a virtutulization server. I want to convert this to a unRAID server till I have a new unRAID build. I also have a Synology NAS. It has a RAID 5 array of 4x6TB and a second RAID 5 array of 4x2TB. The temporary unRAID Chassis has 5 hot swap bays. I like to add 4 2TB drives.These come out the Synology NAS. The data from these 4 2TB drives will be copied to 4 6TB drives in RAID 5 array on the Synology NAS. There is some space left on this array. So now I have 1 parity drive of 2 TB and have 6 TB protected on the temporary unRAID server. Now I can copy over data. Then i want to replace the 2TB parity drive with a with a 8TB seagate SHR drive also add a second 8TB drive for data. Maybe this month or next month. Then all hot swap bays are full. I will have 14 TB of storage. I hope this enough so I can copy the remaining data of 4x6TB RAID array. If I can place all data on the temporary unRAID server then I can sell the Synology and build a new unRAID server. So I first have to replace the parity drive then the data drives. Correct? Maybe there is a better way please let me know.
March 6, 201610 yr Community Expert Not quite sure what you want to do, but it sounds as if you want to remove the 2TB drives from the Synology and still have their data available? If so this could be a problem as adding them to an unRAID array will wipe the existing contents. If instead you are first copying the data off the drives while they are still plugged into the Synlogy then I think you will be OK with your approach as then you will not mind unRAID wiping any existing content when you reuse the drives in unRAID.
March 6, 201610 yr Author Yup, the last assumption is correct. I want to copy the data from the 2TB drives to the 6TB drives then move them over to the temporary unRAID server. Then formatting and using (exchanging later) the 2TB drives.
March 6, 201610 yr Community Expert Yup, the last assumption is correct. I want to copy the data from the 2TB drives to the 6TB drives then move them over to the temporary unRAID server. Then formatting and using (exchanging later) the 2TB drives. OK - then your approach looks good. You are correct in that you have to first upgrade the parity drive before you can start adding larger data drives. You may want to have the preclear plugin installed on unRAID for when you get the new drives. Preclear is not necessary when building the unRAID system with drives that are known to be OK unless you want to do a confidence check on the drives first. Having said that I would make sure you check out the SMART attributes as you do not want to add any drives that have a none-zero value for Pending sectors, and drives with a none-zero value for Reallocated sectors need to be watched. Once unRAID is up and running then as long as you have notifications enabled you will be told if these values change.
March 6, 201610 yr Author Okay, thank you for confirming. I'll check the smart values and pre clear I used before. Good tool!
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