Questions tagged [data-integrity]

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196 votes
6 answers
85k views

LVM dangers and caveats

I have recently started using LVM on some servers for hard drives larger than 1 TB. They're useful, expandable and quite easy to install. However, I could not find any data about the dangers and ...
Adam Matan's user avatar
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15 votes
6 answers
13k views

SATA Disks that handle write caching properly?

It's pretty common to see advice to disable the write cache on individual disks used for databases because otherwise some disks will acknowledge writes that haven't yet made it to the disk surface. ...
eas's user avatar
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7 votes
2 answers
8k views

It is XFS reliable? In case of a power gone off is xfs riskier that ext3 in data corruption/safey?

I have been having some electrical issues,mostly power going out suddenly for a few months,and although ups solve the thing mostly. But still i am worried about filesystem corruption,and data lost. ...
Abel Coto's user avatar
6 votes
3 answers
6k views

Making SATA disk write cache safe

Supposedly (see, e.g., a question about it here), with NCQ enabled drives, the drive write cache is supposed to be safe, as in it doesn't lie to the OS about data being committed to the platters when ...
derobert's user avatar
  • 1,318
4 votes
1 answer
1k views

Drawbacks of a single drive split into partitions and partitions joined into a ZFS raidz1, vs. single drive ZFS with data duplication?

I'm looking for a minimal ZFS setup to achieve self-healing on a single device. Since I back up my data, drive failures are no concern, but bit-rot is. So far, the only suggestions I've been able ...
bz9js's user avatar
  • 41
0 votes
3 answers
1k views

Which SSD to choose, when unexpected powerlosses are frequent?

I am working on a embedded system where there can be unexpected power losses. So far it has been using a Corsair F80 SSD with Windows Embedded Standard 7 (NTFS), and after a unexpected power loss ...
Walkingsteak's user avatar