petercf Posted December 9, 2008 Report Share Posted December 9, 2008 I am backing up large files to a ReadyNAS external RAID using Retrospect v7.6 and am getting the error above. This problem just started happening recently. I have tried numerous fixes including: disabling disk drive write caching and changing registry entry for SystemPages that are described in the MS bulletin #330174. Also turned off "oplocks" on the ReadyNAS. Only seems to happen during backup of large photoshop files. I have 2 identical ReadyNAS RAIDS and problem is on both. Could NIC in workstation or router be failing? Any suggestions for a problem isolation procedure? Quote Link to comment Share on other sites More sharing options...
Mayoff Posted December 9, 2008 Report Share Posted December 9, 2008 Delayed write failure is always a disk failure, as far as I have seen. Contact the drive company for the next step. Quote Link to comment Share on other sites More sharing options...
petercf Posted December 9, 2008 Author Report Share Posted December 9, 2008 I saw you make this comment on a prior post. I think the chances of two separate RAID devices (with four disks each configured as RAID 1) both being bad at the same time (when they report no disk health issues) seems like a probability of disk failure close to zero? Quote Link to comment Share on other sites More sharing options...
petercf Posted December 9, 2008 Author Report Share Posted December 9, 2008 I think the chances of two separate RAID devices (each with four disks and configured as RAID 1 mirror) both being bad at the same time when they all report no failures seems like a probability of close to zero? Quote Link to comment Share on other sites More sharing options...
petercf Posted December 10, 2008 Author Report Share Posted December 10, 2008 PROBLEM SOLVED: Disabled Disk write caching. I was having the dreaded "Windows Delayed Write Failure" message after updating to firmware 4.1.4 on a Netgear ReadyNAS NV+. Contacted Netgear tech support and they advised as follows: In FrontView go to System>Performance tab. Turn off "Enable Disk Write Cache." This is a Windows problem (apparently) as MS has posted a support doc @ http://support.microsoft.com/kb/330174 which confirms the solution. I mistakenly thought the problem was on my workstation and it is on the NAS itself. If you do not have this item to select it may be because of your firmware update. Recommend the update and using this "workaround." Good luck. Quote Link to comment Share on other sites More sharing options...
Mayoff Posted December 10, 2008 Report Share Posted December 10, 2008 thanks for the info. Quote Link to comment Share on other sites More sharing options...
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