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SoftRAID 6 (User wishlist)

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 Nubo
(@nubo)
Eminent Member Customer

We already support 6 drive RAID 1+0 volumes.

We just don't allow adding two drives to a 4 drive RAID 1+0

Maybe we will add this at some point, though.

Maybe I used the wrong terminology. What I mean is I would like to have not just a primary and secondary, but a "tertiary" mirror that could be swapped with an offsite copy and quickly rebuilt -- as is described in the best practices for triple-disk RAID1.

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Posted : 24/01/2020 7:43 pm
(@softraid-support)
Member Admin

We have supported that for 20 years.

Just add more disks to the mirror. We support up to 15 secondary disks. You can rotate secondary's also, so you have for example 3 on line and one off line at all times. Totally up to you.

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Posted : 25/01/2020 12:14 am
 Nubo
(@nubo)
Eminent Member Customer

We have supported that for 20 years.

Just add more disks to the mirror. We support up to 15 secondary disks. You can rotate secondary's also, so you have for example 3 on line and one off line at all times. Totally up to you.

Just to be sure, are you talking about Raid 1+0? If I try to add disks to my existing volumes, the option is grayed out. If I try to create a new Raid1+0 volume, Softraid insists half of the disks be assigned as primary. I don't see a way to create a 3-way Raid1+0.

Thanks!

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Posted : 25/01/2020 3:14 am
(@softraid-support)
Member Admin

Your volume might accidentally be a RAID 0 volume.

A RAID 1 volume will allow you to add unlimited secondary disks, but cannot be converted to a RAID 1+0.

So you need to backup/delete your volume and create a RAID 1 volume (mirror) and then you can have multiple secondary disks.

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Posted : 25/01/2020 1:02 pm
 Nubo
(@nubo)
Eminent Member Customer

Your volume might accidentally be a RAID 0 volume.

A RAID 1 volume will allow you to add unlimited secondary disks, but cannot be converted to a RAID 1+0.

So you need to backup/delete your volume and create a RAID 1 volume (mirror) and then you can have multiple secondary disks.

I'm talking about wanting RAID1+0 that has triple-redundancy instead of double-redundancy. I.e., extend your RAID1 3-mirror strategy, to RAID 1+0.

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Posted : 27/01/2020 6:24 pm
(@softraid-support)
Member Admin

You need to create that from scratch.

We support 6 drive RAID 1+0 volumes, but you cannot take an existing R1 or R1+0 volume and convert to that.

It could be done from a RAID 0 volume.

A RAID 1+0 is actually a stripe volume, with each disk mirrored. So it cannot be constructed out of a Mirror.

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Posted : 27/01/2020 6:30 pm
 Nubo
(@nubo)
Eminent Member Customer

You need to create that from scratch.

We support 6 drive RAID 1+0 volumes, but you cannot take an existing R1 or R1+0 volume and convert to that.

It could be done from a RAID 0 volume.

A RAID 1+0 is actually a stripe volume, with each disk mirrored. So it cannot be constructed out of a Mirror.

I think I haven't made myself clear. I am attaching the SoftRAID display of one of my current volumes, which is a RAID10 with 4 disks per mirror, and a representation of the 3-way RAID10 I propose. Hopefully this better illustrates what I mean by a 3-way RAID10. I don't see any way to arrive at my 2nd example with the current SoftRAID. If you do please let me know. Thanks again.

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Posted : 28/01/2020 2:55 am
(@softraid-support)
Member Admin

I think you want to have 2 "secondary disks" for every "primary" in A RAID 1+0?

There is no way to do this. I do not know any implementation of this.

Perhaps with a RAID 0+1 it is theoretically possible, but not with 1+0.

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Posted : 28/01/2020 11:03 am
 Nubo
(@nubo)
Eminent Member Customer

I think you want to have 2 "secondary disks" for every "primary" in A RAID 1+0?

There is no way to do this. I do not know any implementation of this.

Perhaps with a RAID 0+1 it is theoretically possible, but not with 1+0.

E.g.: Dell Compellent "RAID 10 Dual Mirror"

I understand if it seems like too small a niche, I was simply enamored with the example of the triple-mirror RAID 1 "best practice" SoftRAID describes and thought it would be quite useful for people who must use RAID10 instead of RAID 1.

Regards, John

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Posted : 28/01/2020 12:36 pm
(@softraid-support)
Member Admin

The downside to your plan, however, is data corruption. Imagine a hacker encrypting files on your volume, as a horror story. (as what has been happening globally with ransomware) This does not protect you.

Better is keeping a independent copy of your data, preferably off line, or as a "read only" volume.

We are working on this kind of technology for all SoftRAID volumes. It may take us a while to get there, but it would be a much stronger solution.

In the meantime, perhaps create a R0 volume clone of your volume. Then run a cloning app like SuperDuper/Chronosync/Carbon Copy Cloner to keep it up to date, then keep it off line. That gives you an independent backup. Resync it weekly or Monthly.

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Posted : 28/01/2020 1:08 pm
(@jdouglass)
Trusted Member Customer

I’ve been using spideroak as my cloud backup and it works great. Uses end to end encryption as well. Might be worth a look for you

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Posted : 28/01/2020 1:43 pm
(@softraid-support)
Member Admin

Looks interesting.

Cloud backup is a valuable way to keep protected.

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Posted : 28/01/2020 1:59 pm
(@donkadoo)
Active Member Customer

For a 6.x I would love to be able to add hardrives to an existing raid! :)

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Posted : 12/02/2020 7:52 am
(@softraid-support)
Member Admin

We are not planning on this in the near future, sorry.

Maybe someday.

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Posted : 12/02/2020 11:00 am
(@jdouglass)
Trusted Member Customer

We are not planning on this in the near future, sorry.

Maybe someday.

A man can dream though

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Posted : 12/02/2020 11:23 pm
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