“Shortcut” For Creating A Software RAID 60?
Hello all,
Testing stuff virtually over here before taking it to the physical servers.
I found a shortcut for creating a software RAID 10 (“–level”), device in CentOS 6.
Looking at the below, I don’t see anything about a shortcut for RAID 60. https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/htm l/Storage_Administration_Guide/s1-raid-levels.html
Is RAID 60 an uncommon RAID-configuration, as compared to RAID 10, and this might be why it’s missing?
Not too cumbersome to first create two RAID 6-arrays, then add them to a RAID 0, but it does take some extra time. Besides, I haven’t found any way to fail a member disk, as is possible to do when using RAID level 10.
Am I missing something here?
7 thoughts on - “Shortcut” For Creating A Software RAID 60?
That’s not really a shortcut, per se. RAID10 in Linux is not necessarily similar to RAID1+0. The default, “near” layout is the classic 1+0 layout, but other modes of operation are supported by the RAID10 driver.
Correct. There’s no such driver.
If you built a RAID0 array of RAID6 arrays, then you’d fail a disk by marking it failed and removing it from whichever RAID6 array it was a member of, in the same fashion as you’d remove it from any other array type.
device in
Thanks for the clarification. Close enough though, for my intended use!
You mention modes however. I don’t recall seeing any particular info on that.
Care to elaborate a bit on that, if it’s not too OT?
to do
Aha, thanks!
Never mind. Found this to start with.
http://www.ilsistemista.net/index.php/linux-a-unix/35-linux-software-raid-10
-layouts-performance-near-far-and-offset-benchmark-analysis.html?start=1
FWIW, what I’ve done in the past is build the raid 6’s with mdraid, then use LVM to stripe them into a volume group.
What’s the advantage doing it that way?
Ease of maintenance maybe?
Additionally, see the man page for “md”.
Gotcha’. Thanks.