RAID-1 and bad sectors?
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From: Rod Speed on 31 Dec 2005 01:46 void(a)no.spam.com wrote > Rod Speed <rod_speed(a)yahoo.com> wrote >> void(a)no.spam.com wrote >>> OK, I just ran HUTIL and got some errors (see below). >>> Is there any way to tell if those bad sectors have data >>> on them or if they're not being used? >> Hitachi's DFT does tell you what files particular bads are in >> from memory. Dont currently have a drive with bads to check. >> Why do you care ? You said you have the data fully backed up. > If I can determine that those bad sectors are in unused areas, then > I can "ghost" the drive to my new SP1213N, which I also ran HUTIL > on and it has no problems. That's much easier than spending time to > re-install the OS and re-install and re-configure a ton of applications. OK. > I also need to determine how BootItNG deals with writing data to bad sectors, The hard drive should handle that behind BootItNG's back. > and how Windows deals with reading and writing data from bad sectors. The hard drive should handle the writing behind Win's back. > That will help me determine if my data still has integrity or not. >> It would be worth checking the drive with some other diag like >> DFT, those numbers look suspicious, all at the extreme range >> of the cylinders, all on one head, with increasing sector numbers. >> I'd personally get the SMART data somehow, by using >> smartctl when using the knoppix CD and decide whether >> to RMA the drive if its clearly failing, like it looks like it is. > What will the SMART data tell me? Basically confirm that the drive is dying. >> If the data is fully backed up, I'd personally write zeros thru >> the drive and see if that will get the drive to reallocate the bads, >> but thats too many bads for my taste, it looks like its dying. > The reviews on newegg.com for these Samsung drives aren't great. I've never believed those reviews myself. > I have no confidence that my new SP1213N > won't develop the same problems. None of mine have. And the storagereview reliablity database shows that plenty dont have any problems with their drives too. And the result with many of their competitors drives are much worse, particularly the maxtor drives of the same size. The seagate 7200.7s do better, but the 7200.8s are obscenely bad.
From: dannysdailys on 31 Dec 2005 06:30 > Rod Speedwrote: void(a)no.spam.com wrote > > And the result with many of their competitors drives are > much worse, particularly the maxtor drives of the same size. > > The seagate 7200.7s do better, but the 7200.8s are obscenely bad. I'm curious, where did you read that about the Maxtors? Please post the link.
From: void on 2 Jan 2006 02:05 On Sat, 31 Dec 2005 17:46:49 +1100, "Rod Speed" <rod_speed(a)yahoo.com> wrote: >> I also need to determine how BootItNG deals with writing data to bad sectors, > >The hard drive should handle that behind BootItNG's back. > >> and how Windows deals with reading and writing data from bad sectors. > >The hard drive should handle the writing behind Win's back. So the hard drive will detect a bad sector and then find a good sector to which to write the data? Based on what Chuck F. said, the hard drive will just write the data to whichever sector, even if its bad. >> What will the SMART data tell me? > >Basically confirm that the drive is dying. Seems like a safe assumption. >> I have no confidence that my new SP1213N >> won't develop the same problems. > >None of mine have. And the storagereview reliablity database >shows that plenty dont have any problems with their drives too. > >And the result with many of their competitors drives are >much worse, particularly the maxtor drives of the same size. > >The seagate 7200.7s do better, but the 7200.8s are obscenely bad. Thanks for pointing out storagereview.com. Looks like the Samsungs are near the bottom third. The Seagate 7200.7s are near the top. Maybe I'll get a couple of those.
From: void on 2 Jan 2006 03:04 Thanks for the informative post, Arno.
From: Rod Speed on 2 Jan 2006 04:10
void(a)no.spam.com wrote > Rod Speed <rod_speed(a)yahoo.com> wrote >>> I also need to determine how BootItNG >>> deals with writing data to bad sectors, >> The hard drive should handle that behind BootItNG's back. >>> and how Windows deals with reading and writing data from bad sectors. >> The hard drive should handle the writing behind Win's back. > So the hard drive will detect a bad sector and then > find a good sector to which to write the data? Yes. > Based on what Chuck F. said, the hard drive will just > write the data to whichever sector, even if its bad. Its more complicated than that. >>> What will the SMART data tell me? >> Basically confirm that the drive is dying. > Seems like a safe assumption. It aint about assumptions. You can get what appear to be bad sectors for other reasons. >>> I have no confidence that my new SP1213N >>> won't develop the same problems. >> None of mine have. And the storagereview reliablity database >> shows that plenty dont have any problems with their drives too. >> And the result with many of their competitors drives are >> much worse, particularly the maxtor drives of the same size. >> The seagate 7200.7s do better, but the 7200.8s are obscenely bad. > Thanks for pointing out storagereview.com. > Looks like the Samsungs are near the bottom third. There's plenty in the bottom 10% > The Seagate 7200.7s are near the top. Maybe I'll get a couple of those. |