mattm1121 Posted October 4, 2022 Share Posted October 4, 2022 (edited) Greetings, I currently have the following set up with UnRaid 6.10.3; Parity WDC_WD121KFBX-68EF5N0_5QK0K9KB - 12 TB (sdi) Disk 1 TOSHIBA_HDWG11A_Z1L0A021FBDG - 10 TB (sdl) Disk 2 WDC_WD102KFBX-68M95N0_VCKR49BP - 10 TB (sdj) Disk 3 WDC_WD102KFBX-68M95N0_VCKW15MP - 10 TB (sdk) During parity checks or certain other operations, the read/write values average around 230mb/s. Parity checks take around 18 hours to complete with an average of 180mb/s according to the history. I purchased two 12tb drives. (Western Digital 12TB WD Red Plus NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 GB/s, CMR, 512 MB Cache, 3.5" - WD120EFBX) I pre-cleared one and added it to the raid. The other I use as to backup data. Once added the parity check took 30+ hours with an average of 114mb/s. So my question would be does it take longer the more drives you add? Is this type of performance change expected? I appreciate any feedback anybody has. Thanks. toph-diagnostics-20221004-0625.zip Edited October 4, 2022 by mattm1121 Quote Link to comment
JorgeB Posted October 4, 2022 Share Posted October 4, 2022 Please post the diagnostics, mostly so we can the hardware. Quote Link to comment
mattm1121 Posted October 4, 2022 Author Share Posted October 4, 2022 Added. Sorry about that. Quote Link to comment
JorgeB Posted October 4, 2022 Share Posted October 4, 2022 Hardware seems capable enough, though there might be a bottleneck if you have the HBA installed in the bottom slot, running a diskspeed test is a good idea to test disk speed and controller bandwidth. 1 Quote Link to comment
jbartlett Posted October 5, 2022 Share Posted October 5, 2022 http://strangejourney.net/hddb/index.cfm?View=Drives&Vendor=Western Digital&Model=WD120EFBX The tail end of the drive is kinda slow IMHO but the overall average is around 170mb/sec. Compare your graph to the ones in the link, the data sample is still small but out of 7 unique drives uploaded, the spread is pretty tight. Quote Link to comment
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