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Hi all,

I want to use all disks in my Lacie as a single volume. JBOD is mentioned a few times, but I can't find any guide for it.
I don't need redundancy, but I want to use all available space on my NAS. It should show up as 1 big single volume, instead of 3 smaller volumes.

If this is possible: how? :)

Thank you!

-again, great project, this Lacie has had a serious upgrade with this firmware!-

Hi,

I think you confuse RAID0 and JBOD

JBOD is not a raid and the main difference is that if you have a disk failure on a jbod member you do not lose your data from the other disks whereas with a raid0 you lose all data !

Terror Factor wrote:JBOD is mentioned a few times, but I can't find any guide for it.

Indeed but it is the raid0 support and not JBOD feature. On the next firmware version, there is only a full support for single volume; raid0-raid1 and raid5 volume. This version should be released in few weeks...

To implement JBOD support we need to add some additional tools (as LVM) to be able to build a single logical volume. A feature we need to deepen for another version.

So currently with the firmware, you can have either 5 physical single data volume or a raid0

Thank you again, Jocko!
I didn't confuse them, but I thought it was already possible in the current firmware.
Is there a guide for raid 0 somewhere? I found the guides for 1 and 5, but not for 0. Might use that in the meantime.

No there is not a raid 0 tutorial.

So use the raid5 tutorial and on the create mdadm command declares 0 as level instead of 5.
Note: I assume you do not have yet data on disks, no need to build the raid in two steps ;)

I deepen more JBOD support with linux.
Use JBOD instead of a linear raid or a raid 0 is for its disk faulty capacity: you lost only data on the faulty disk.
But with our platform where there is no raid controler, we must use a software solution like LVM.
Then the issue is LVM builds a logical device to do it.

So if we have a disk failure, you got the same result as a raid 0: you lose all data :pound
=> for 5big2, we can not get a real JBOD device but only a fake one like raid 0 or linear (which is also abusively called JBOD)

I did not plan to add support for raid linear but if you have different disk sizes, it is better to use this raid type instead of raid 0
As currently I am writing the related menu to create a raid volume, there is no issue to add this raid type.

So in next version, the firmware will support linear, raid0, raid1, raid5 volume

Great, thanks!

Being able to use different disk sizes might still be an advantage. Too bad it doesn't make a difference for losing data compared to raid 0.

I went with 5 for now :)