AgentXXL Posted June 26, 2019 Share Posted June 26, 2019 1 hour ago, Jomo said: Thank you, though it is not clear to me what that setting does Disk write caching is a feature that improves system performance by using RAM (volatile memory) to collect write commands sent to data storage devices and cache them until the slower storage device (ex: hard disk) can be written to later. As RAM is much faster than disk I/O, this allows data to move more quickly, at least until you exhaust your available RAM. It has some minor risk if your system isn't stable or protected from power failure with a UPS, but more when using move instead of copy. By default it appears that 6.7.x of unRAID set WCE to 1, so that all disks on the array are write cache enabled. Think of it as a RAM-disk buffer or storage device that's faster than even SSDs. Quote Link to comment
Jomo Posted June 26, 2019 Author Share Posted June 26, 2019 (edited) Ah, thanks for the explanation. For some reason, the only one set to 1 by default was the parity drive. Everything else was 0 Edited June 26, 2019 by Jomo Quote Link to comment
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