Zonediver Posted June 18, 2018 Share Posted June 18, 2018 Hi folks, i want to ask, if someone can tell me, how long a Parity-Check with a 10TB HDD takes. Thanks for your help Quote Link to comment
Seige Posted June 18, 2018 Share Posted June 18, 2018 1 minute ago, Zonediver said: Hi folks, i want to ask, if someone can tell me, how long a Parity-Check with a 10TB HDD takes. Thanks for your help If you have a setup with a single parity and a somewhat decent cpu it is pretty much limited by the slowest drive in your array. I would estimate something between 12-20 hours. Quote Link to comment
Zonediver Posted June 18, 2018 Author Share Posted June 18, 2018 (edited) 5 minutes ago, Seige said: If you have a setup with a single parity and a somewhat decent cpu it is pretty much limited by the slowest drive in your array. I would estimate something between 12-20 hours. Hi Seige and thanks for your reply. I plan to remove all my 3TB-HDDs and use new 10TBs instead. My sys takes about 11h for a Parity-Check at the moment (3 and 4 TB WD-Reds). I was estimating about 22h with the new 10TBs. Edited June 18, 2018 by Zonediver Quote Link to comment
Seige Posted June 18, 2018 Share Posted June 18, 2018 The 3/4 TB WD reds are rather slow in comparison. Their 10 TB model is a bit faster, and since the read/write speed is not linear it is hard to predict an exact value. When going from a 4TB WD red parity to a 10 TB Ironwolf my parity check times went from 10 hrs to 19 with another 10tb data drive in the array. Once it is done with the 4 TB section involving the WD reds it picks up speed since the Seagates are notably faster. With only Ironwolfs or similar drives I guess it would be around 12 ish hours. Quote Link to comment
Zonediver Posted June 18, 2018 Author Share Posted June 18, 2018 (edited) 14 hours ago, Seige said: The 3/4 TB WD reds are rather slow in comparison. Their 10 TB model is a bit faster, and since the read/write speed is not linear it is hard to predict an exact value. When going from a 4TB WD red parity to a 10 TB Ironwolf my parity check times went from 10 hrs to 19 with another 10tb data drive in the array. Once it is done with the 4 TB section involving the WD reds it picks up speed since the Seagates are notably faster. With only Ironwolfs or similar drives I guess it would be around 12 ish hours. I know this - the question is, how fast is the 10TB WD-Red at the inner zone - the 4TB REDs have 75MB/s - i guess that the 10TB should have around 100MB/s Edited June 19, 2018 by Zonediver Quote Link to comment
Seige Posted June 18, 2018 Share Posted June 18, 2018 Google says about 100 MB/s, so you should be right: according to this https://www.tomshardware.com/reviews/wd-red-10tb-8tb-nas-hdd,5277-2.html Quote Link to comment
Zonediver Posted June 18, 2018 Author Share Posted June 18, 2018 (edited) 2 hours ago, Seige said: Google says about 100 MB/s, so you should be right: according to this https://www.tomshardware.com/reviews/wd-red-10tb-8tb-nas-hdd,5277-2.html Looks good - that would also fit to the max. reading performance of 218MB/s. Edited June 18, 2018 by Zonediver Quote Link to comment
Strega Posted June 19, 2018 Share Posted June 19, 2018 I can tell you a 10TB IronWolf array (1 parity and 4 data) takes 15 hours and 38 minutes. Quote Link to comment
Zonediver Posted June 19, 2018 Author Share Posted June 19, 2018 6 hours ago, Strega said: I can tell you a 10TB IronWolf array (1 parity and 4 data) takes 15 hours and 38 minutes. Thanks for this info - its a good indication. Quote Link to comment
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