We've used chdsk /f /r on any variety of hardware RAID systems. We have a system with a 1.2TB LUN tat frys occasionally and they run it at least every month or two. It takes 4-6 hours but it does work just fine.
On Fri, May 7, 2010 at 8:11 PM, Andrew Levicki <[email protected]> wrote: > Hi John, > Do you have any feedback for us on how this went, please? > I've been puzzling over the issue of running chkdsk on RAID arrays and have > done a little research but I cannot find anything from Microsoft about it > and opinion is divided. > My concern is this: how can the chkdsk software repair a physical disk > subsystem? For example, I have a RAID-5 array and one of the disks in that > array has a bad sector, how does chkdsk mark that bad sector without > affecting the parity information across the rest of the array? Or lets say I > have a RAID-1 mirror and one of the disks has a bad sector. Does it also > mark a sector on my good disk as being bad? > I would think if you are running hardware RAID, the hardware vendor would > include a diagnostic utility which would be better to run than chkdsk. (e.g. > hp Array diagnostics utility). > Sorry to reopen the case, but I'm not so sure that it was so wise to let it > rip... > Kind regards, > andrew > > On 6 May 2010 00:56, John Hornbuckle <[email protected]> > wrote: >> >> Yeah, we have reliable backups--so we're prepared for the worst. >> >> I'm going to run it tonight after my users have gone home and I can >> dismount the volume without disruption. I'm hoping that chkdsk fixes the >> problem (four files are inaccessible), or at least has no effect. But I'm >> prepared for the possibility that it will make things worse. >> >> >> >> John >> >> -----Original Message----- >> From: Ben Scott [mailto:[email protected]] >> Sent: Wednesday, May 05, 2010 11:08 AM >> To: NT System Admin Issues >> Subject: Re: Chkdsk on RAID 5 >> >> On Wed, May 5, 2010 at 8:41 AM, John Hornbuckle >> <[email protected]> wrote: >> > Is it safe to run chkdsk /f on a RAID 5 array? >> >> It's no more or less safe than running it on a single disk. >> >> (Which is to say: The filesystem is already damaged. You've probabbly >> already lost data. CHKDSK will almost certainly fix the errors on the >> filesystem. It's theoretically possible for CHKDSK to make things worse, >> although in practice that is exceedingly rare. >> Backups are always a good idea. This product is sold by weight, not be >> volume. Void where prohibited. Be kind to animals. Brush after every >> meal.) >> >> -- Ben >> >> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ >> <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ >> >> >> NOTICE: Florida has a broad public records law. Most written >> communications to or from this entity are public records that will be >> disclosed to the public and the media upon request. E-mail communications >> may be subject to public disclosure. >> >> >> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ >> ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ >> > > > > -- > Kind regards, > > Andrew Levicki > MCITP:EDST7/EMA/EA,MCSE,MCSA,MCP,CCNA,ITIL > > > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
