September 4, 20196 yr Hi All . Just wanted to ask does any one know why it take so long to do parity check on Unraid. No changes but it take between 4 hours to 6 hours.
September 4, 20196 yr Community Expert 3 minutes ago, Morne said: Hi All . Just wanted to ask does any one know why it take so long to do parity check on Unraid. No changes but it take between 4 hours to 6 hours. Ido not understand the context here! What size is your parity drive? What sort of time are you expecting? A parity check has to read every sector on the parity drive so the time is directly dependent on the size of the drive. It tends to take something like 2-3 hours per TB.
September 4, 20196 yr Author thanks for the reply. So i have 8 TB system with a 3 TB parity drive. The problem is that i have done no changed to the system i just run a parity check every night just to be save.
September 4, 20196 yr Community Expert Just now, Morne said: thanks for the reply. So i have 8 TB system with a 3 TB parity drive. The problem is that i have done no changed to the system i just run a parity check every night just to be save. There is no reason to run parity checks at anything like that frequency. Most people run parity checks once a month, with some only bothering every 3 months or so. There are even those who do not bother with parity at all if they have a good backup strategy. Parity checks are not aware of changes - they are just checking that every sector on the data drives agrees with the calculated parity values on the parity drive.
September 4, 20196 yr Author thanks i will then change my parity check once a month. thanks for the help.
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