Bad Block Scan completed and reports 15 bad blocks found. Is there a tool that can repair them? How worried should I be? 1 of 3 6tb WD red drives in bays 1-3 of a TVS-471. Thanks!
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Bad Blocks
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FlaParrotHead
- Getting the hang of things
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Bad Blocks
TVS-471
QTS 5.1.1.2491
QTS 5.1.1.2491
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dolbyman
- Guru
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- Joined: Sat Feb 12, 2011 2:11 am
- Location: Vancouver BC , Canada
Re: Bad Blocks
RAID scrubbing would repair them, but do you really want to trust any HDD with bad blocks ? .. what if another drive fails ? (rebuild from defective blocks will not work)
I'd replace it sooner rather than later
I'd replace it sooner rather than later
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FlaParrotHead
- Getting the hang of things
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- Joined: Fri Mar 04, 2016 5:01 am
Re: Bad Blocks
Thanks... I’ll scrub for now and see about getting some new drives. I am out of the US and getting drives is a long slow process. I currently have slots 1-3 configured as RAID5 using 3 WD 6tb drives. Slot 4 is a separate stand alone drive. Is there a good doc or simple instructions as to how to swap old for new drives without loosing data/configurations. I have only done the initial build, several years ago, and never upgraded or needed to swap drives. Thanks!dolbyman wrote:RAID scrubbing would repair them, but do you really want to trust any HDD with bad blocks ? .. what if another drive fails ? (rebuild from defective blocks will not work)
I'd replace it sooner rather than later
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TVS-471
QTS 5.1.1.2491
QTS 5.1.1.2491
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dolbyman
- Guru
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- Joined: Sat Feb 12, 2011 2:11 am
- Location: Vancouver BC , Canada
Re: Bad Blocks
the online manual explains it pretty well
TL:DR hotswap a new drive (of equal or larger size) and rebuild will start automatically
TL:DR hotswap a new drive (of equal or larger size) and rebuild will start automatically
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jsteng
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Re: Bad Blocks
From what I know HDs have several reserved tracks for Bad Blocks.
Does SMART 197, 198 errors mean "no more reserved tracks" to substitute bad blocks?
How frequent should we do Scrubbing? From my understanding, we should at least do this once a week, and immediately upon Bad Block discovery. But what is the best practice?
And lastly, what exactly does QNAP do during RAID Scrubbing? And how does it recover errors?
Thanks.
Does SMART 197, 198 errors mean "no more reserved tracks" to substitute bad blocks?
How frequent should we do Scrubbing? From my understanding, we should at least do this once a week, and immediately upon Bad Block discovery. But what is the best practice?
And lastly, what exactly does QNAP do during RAID Scrubbing? And how does it recover errors?
Thanks.
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MrVideo
- Experience counts
- Posts: 4742
- Joined: Fri May 03, 2013 2:26 pm
Re: Bad Blocks
If the HDD hits a bad sector during a read and it can't recover from it via the CRCC, then there is no getting that data back, period. The unrecoverable error should be logged by the NAS. That HDD needs to be replaced immediately. Recoverable errors are a bad sign, indicating that the HDD is going to end up failing. Get it replaced immediately.
QTS MANUALS
Submit QNAP Support Ticket - QNAP Tutorials, FAQs, Downloads, Wiki - Product Support Status - Moogle's QNAP FAQ help V2
Asking a question, include the following (Thanks to Toxic17)
QNAP md_checker nasreport (release 20210309)
===============================
Model: TS-869L -- RAM: 3G -- FW: QTS 4.1.4 Build 20150522 (used for data storage)
WD60EFRX-68L0BN1(x1)/68MYMN1(x7) Red HDDs -- RAID6: 8x6TB -- Cold spare: 1x6TB
Entware
===============================
Model: TS-451A -- RAM: 2G -- FW: QTS 4.5.2 Build 20210202 (used as a video server)
WL3000GSA6472(x3) White label NAS HDDs -- RAID5: 3x3TB
Entware -- MyKodi 17.3 (default is Kodi 16)
===============================
My 2017 Total Solar Eclipse Photos | My 2019 N. Ireland Game of Thrones tour
Submit QNAP Support Ticket - QNAP Tutorials, FAQs, Downloads, Wiki - Product Support Status - Moogle's QNAP FAQ help V2
Asking a question, include the following (Thanks to Toxic17)
QNAP md_checker nasreport (release 20210309)
===============================
Model: TS-869L -- RAM: 3G -- FW: QTS 4.1.4 Build 20150522 (used for data storage)
WD60EFRX-68L0BN1(x1)/68MYMN1(x7) Red HDDs -- RAID6: 8x6TB -- Cold spare: 1x6TB
Entware
===============================
Model: TS-451A -- RAM: 2G -- FW: QTS 4.5.2 Build 20210202 (used as a video server)
WL3000GSA6472(x3) White label NAS HDDs -- RAID5: 3x3TB
Entware -- MyKodi 17.3 (default is Kodi 16)
===============================
My 2017 Total Solar Eclipse Photos | My 2019 N. Ireland Game of Thrones tour
-
FlaParrotHead
- Getting the hang of things
- Posts: 51
- Joined: Fri Mar 04, 2016 5:01 am
Re: Bad Blocks
Just takes time, effort, and additional cost when living outside of the world of Amazon, tech stores, and easy access to things...
Sent from my iPad using Tapatalk
Sent from my iPad using Tapatalk
TVS-471
QTS 5.1.1.2491
QTS 5.1.1.2491