Edit - Super User

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

Rev

Thank you Hennes. I was planning to have and external HDD and backup the most critical files weakly to it. So, the best choice would be 4 disks in RAID 10 instead of RAID 6?
– CSeven
Commented Jun 15, 2013 at 14:30
RAID 5 and RAID 6 can suffer from a write hole. This is why most people only use them when you want some protection but can not afford to loose a lot of disk space. (e.g. it makes a lot of sense on a file server which automatically warns the network administrator that a disk has failed. That admin keeps the server up during the day to the people can do their work, and then at 5 PM he replaces the broken disk and rebuilds the array). It also is fine in a home environment where you just do a lot of reads but not many small writes. It is however not build for maximum safety.
– Hennes
Commented Jun 15, 2013 at 14:36
For maximum safety consider mirrors (E.g. RAID 1, loose half the disks), a striped mirror (RAID 10), or even two two-disk RAID 1's. The latter even has the advantage that you could dump all move on one array, the rest on the other array and keep one set of drives spun down until you need them. (e.g. use hdparm -S NUMBER to set standby mode on the drives after some time with no activity).
– Hennes
Commented Jun 15, 2013 at 14:40

Add a comment |

Correct minor typos or mistakes
Clarify meaning without changing it
Add related resources or links
Always respect the author’s intent
Don’t use edits to reply to the author

create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)
<https://example.com>
[example](https://example.com)
<a href="https://example.com">example</a>

formatting help »
answering help »