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Line 37: === ZFS === The [[ZFS\|ZFS filesystem]] was ~~written~~designed to immediately write data to a sector that reports as bad or takes an excessively long time to read (such as non-TLER drives); this will usually force an immediate sector remap on a weak sector in most drives.{{Citation needed\|date=March 2022}} ===RAID controllers=== Line 61: === Vendor utilities === ==== Western Digital ==== A {{Mono\|WDTLER.EXE}} utility allows the enabling or disabling of the TLER parameter on Western Digital hard drives. This utility is written for [[DOS]]. The utility works on and makes changes to all compatible Western Digital hard disk drives connected to the computer. The change survives power-cycling.~~<ref name=greg/>~~ Western Digital used to mention the tool in an FAQ.<ref name=customer-service>{{cite web \|title=TLER / CCTL / ERC thread \|url=https://hardforum.com/threads/tler-cctl-erc-thread.1562128/ \|website=[H]ard{{!}}Forum \|date=16 November 2010}}</ref> The utility comes with three batch files, {{Mono\|TLERSCAN.BAT}} to get the current state of the TLER setting on all the hard drives, {{Mono\|TLER-ON.BAT}} to enable TLER, and {{Mono\|TLER-OFF.BAT}} to disable TLER. The included {{Mono\|TLER-ON.BAT}} will set the Read & Write TLER time to seven seconds. It is possible to ~~can~~ use the {{Mono\|WDTLER.EXE}} utility directly with the <code>-r# -w#</code> parameters for a custom timeout. Western Digital claims that using the {{Mono\|WDTLER.EXE}} utility on newer drives can damage the firmware and make the disk unusable. The utility is no longer available from Western Digital, and new drives will not be able to have the TLER setting changed. RE disks are only suitable for RAID arrays and Caviar are only suitable for non-RAID use. The utility still works for older drives{{which\|date=May 2023}}<!-- what is the cutoff? -->. Line 69: ==== Hitachi ==== Hitachi customer service stated in 2009 that there is a Feature Tool for changing ERC (referred to as CCTL).<ref name=customer-service/> ==== Seagate ==== Seagate provides a {{Mono\|openSeaChest}} utility to allow you to interrogate and change many firmware settings including TLER. If you cannot use <code>smartctl -l scterr,x,y</code> to set the TLER, the relevant command-line commands are <code>openSeaChest_Configure -d /dev/sg0 --sctReadTimer</code> and <code>openSeaChest_Configure -d /dev/sg0 --sctWriteTimer</code>. ==References== Line 75 ⟶ 78: ==External links== * [https://raid.wiki.kernel.org/index.php/Timeout_Mismatch Linux Raid wiki: Timeout Mismatch] * [https://archive.today/20130121054825/http://wdc.custhelp.com/app/answers/detail/a_id/1397/p/227,283/session/L3RpbWUvMTMyMTQzOTc4NS9zaWQvdVhvYmpmSms%3D Western Digital FAQ answer ID 1397: Difference between Desktop edition and RAID (Enterprise) edition drives] * [http://www.wdc.com/wdproducts/library/other/2579-001098.pdf Time-Limited Error Recovery (TLER) Information Sheet], Western Digital, January 2013 * [https://web.archive.org/web/20071103042201/http://www.samsung.com/global/business/hdd/learningresource/whitepapers/LearningResource_CCTL.html Samsung CCTL]