Stephenph Posted March 20, 2023 Share Posted March 20, 2023 Just want to see how long I should expect my parity to run in general. Currently have a 1 disc array and a single Parity drive (both drives are WDC_WD30EFRX-68AX9N0_WD-WCC1T1090948). In addition I have a single SSD cache drive (WDC_WDS100T2B0A-00SM50_190235458402 ) The array is only at about 2% utilization at this time, but I do plan on uploading a lot more data soon. The parity check is scheduled for every week and is ran when the system is not in active use (2 AM on Monday morning) Currently the parity check takes about 7.5 hours. Will the parity check take longer with more data on the array? are there tweaks I can do to make it faster? My current plan is to add a second Cache pool (Probably a pair of NvME drives) in a few months (sooner if warranted) and a second hard drive when my array is storing about 2 TB. Quote Link to comment
Solution JorgeB Posted March 20, 2023 Solution Share Posted March 20, 2023 8 minutes ago, Stephenph said: Will the parity check take longer with more data on the array? Nope, and 7.5h sounds about right for the model and capacity of the disks involved, usually count with 2 to 3h per TB. 1 Quote Link to comment
JonathanM Posted March 20, 2023 Share Posted March 20, 2023 5 hours ago, Stephenph said: The parity check is scheduled for every week Why so often? Default is once a month, typically that's enough. Parity checks are only needed to verify that parity is being kept up to date, and they are useful to ensure that seldom used disks are still completely error free so if a drive fails it can be successfully rebuilt. Parity is kept up to date in realtime, checks are only needed to verify the realtime process is still working as it should. 1 Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.