Error recovery control: Difference between revisions

Revision as of 06:20, 29 April 2016

Revision as of 06:24, 29 April 2016

Line 41:

The ZFS filesystem was written 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.

== Western Digital Time Limit Error Recovery Utility - WDTLER.EXE ==

The {{Mono|WDTLER.EXE}} utility allows for the enabling or disabling of the TLER parameter in the hard disk's firmware settings allowing the user to determine the best setting for his particular usage as either a stand-alone or RAID drive. This utility is written for [[DOS]] and you will require a DOS bootable disk with this utility on it to use it.

The WDTLER utility allowsworks foron theand enablingmakes orchanges disablingto ofall thecompatible TLERWestern parameter in theDigital hard disk's firmwaredrives settingsconnected allowingto the usercomputer. It is important to determineremember thethat bestany settingchange forwill hisaffect particularall usagethe ashard eitherdrives. a stand-aloneIf oryou RAIDonly drive.wish to Thischange utilityspecific ishard writtendrives foron [[DOS]]your andcomputer then you willshould requiredisconnect athe DOSother bootablehard diskdrives withbefore you use this utility, onthen itreconnect tothem useafter you are itfinished.

The WDTLER utility comes with three batch files, TLERSCAN.BAT to get the current state of the TLER setting on all the hard drives, {{Mono|TLER-ON.BAT}} to Enableenable TLER, and {{Mono|TLER-OFF.BAT}} to Disabledisable TLER. The included {{Mono|TLER-ON.BAT}} will set the Read & Write TLER time to 7seven seconds. If you wish to use a custom timeout value, you can use the {{Mono|WDTLER.EXE}} utility directly with the <code>-r# -w#</code> parameters to specify how many seconds the Time Limit value should be.

The WDTLER utility works on and makes changes to all the connected and compatible Western Digital hard drives to the computer. It is important to remember that any change will affect all the hard drives. If you only wish to change specific hard drives on your computer then you should disconnect the other hard drives before you use this utility, then reconnect them after you are finished.

Western Digital now claims that using the {{Mono|WDTLER.EXE}} toolutility on newer drives can damage the firmware and make the disk unusable. The WDTLER.EXE toolutility is no longer available from Western Digital, and new disksdtives 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 disksdrives.

The WDTLER utility comes with three batch files, TLERSCAN.BAT to get the current state of the TLER setting on all the hard drives, TLER-ON.BAT to Enable TLER, and TLER-OFF.BAT to Disable TLER. The included TLER-ON.BAT will set the Read & Write TLER time to 7 seconds. If you wish to use a custom timeout value, you can use the WDTLER.EXE utility directly with the <code>-r# -w#</code> parameters to specify how many seconds the Time Limit value should be.

Western Digital now claims that using the WDTLER.EXE tool on newer drives can damage the firmware and make the disk unusable. The WDTLER.EXE tool is no longer available from Western Digital, and new disks 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 disks.

==smartctl utility==