RAID5 Brand new WD Red or 2nd Hand Ultrastar/HGST?

Soldato
Joined
17 Jun 2007
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As the title.. If your using RAID5 on a Synology NAS that has films and Backups on would you go with brand new WD Red's or 3-4 year old data centre drives. Seems a saving of over £100-£130 per drive for 12tb's
 
I bagged some 12tb HGST drives off the bay. So I now have 3 12tb and a 14tb. I have stuff on the 14tb. I want to add the new drives into Raid without losing the files on the 14tb. Whats the easiest way to do this.
 
You can't create any RAID with drives that are smaller than the existing volume so you're in a bit of a pickle as the 14TB will also have DSM and your configuration on it. First you need to decide which level of RAID you want (I'd go for RAID10 but you could go for RAID5). https://kb.synology.com/en-global/DSM/help/DSM/StorageManager/storage_pool_what_is_raid?version=7 might help you decide. I think you'll need to backup your configuration then replace the 14TB with one or two of the 12TBs, initialise it/them, restore your configuration, add in the 14TB as a separate volume, copy the data across then nuke it. You can then add the third 12TB and add it and the 14TB to the RAID. Again, https://kb.synology.com/en-global/DSM/help/DSM/StorageManager/storage_pool_expand_add_disk?version=7 might help. I really wouldn't do this without a backup of the 14TB drive, just in case.
Cheers mate.. Its taken 2 days to add the new HDD's
I'm copying over the Data now from the 14th to the 12's then I'll nuke the 14 and see If I can add that in....
 
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