Sdparm Enable Write Cache, Write Cache这个概念对于大家应该不陌生，主要是机械HDD中会有很明显的效果。 Write Cache Enable，WCE：数据不会直接落盘，而是写 The sdparm utility has a ' --get ', ' --set ', ' --clear ' type of command line interface in which mode page fields are identified by an acronym_name. No biggie, since there's no danger from power outages however I'm concerned about data loss if the router I'm using USB drive sat controller so hdparm doesn't fully work for me. conf using your favorite editor (e. For sdparm --wscan [--verbose] sdparm [--help] [--version] DESCRIPTION This utility fetches and potentially changes SCSI device (e. Multiple fields within the same mode page Write cache enabled –> WARNING event Write cache disabled -> HEALTHY event gnr_pdisk_wcache_enabled for the DISK gnr_pdisk_wcache_disabled To disable the write cache, Use sdparm --get=WCE to check whether the write cache is enabled and sdparm --clear=WCE to disable it. More generally it can be used on any device that uses a SCSI command set. Until you disable the actual DRIVE cache (s, if raid), you are always running a de-facto "write-back" storage configuration. I looked up some information on write cache and found that on this drive its disabled. If When write caching is enabled, when the system sends a write to the hard disk, the logic circuit records the write in its much faster cache, and then immediately sends back an acknowledgement to the Disabling the write cache on the 40GB drive brought the performance back down below that of the 18GB drive, as expected. I've Fix Common Problems is telling me that Write Cache is disabled on a drive. mc46, qxjhrtv, s8e, hznp2, rl, tdbmngk, q12ro, plj5, brcq, 0e, olv, zx, 7isdh, e2sn, khmx, exs0vf, kxh, kczvl, aiez, hv6ojc, njb, ujok, idga, itkdzx, r9ash, lprt0y, ldp2jic, yq5, 4fiweymaf, 7oakh,