Advice on setting u...
 
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Advice on setting up RAID volumes

(@wisehaus)
Active Member Customer

Hi folks,

I have just recently purchased a ThunderBay 8 enclosure and was hoping I could get some advice on how best to it setup and arrange the volumes. I plan to eventually populate the enclosure with 8 identical drives and was considering several options for how to define the volumes:

1) Create two separate RAID5 volumes of 4 disks each

This option is appealing because I could populate the enclosure in stages as my need for storage growths. I would get 4 disks initially to create the first RAID5 volume, and then add a second RAID5 volume later when needed.

2) Create a single RAID5 volume using all 8 disks

I believe this option would give me the most net storage space, but would mean getting all the disks at once since there is no option to expand an existing RAID5 volume after the fact. Is this assumption true?

3) Create a single RAID6 volume using all 8 disks

I believe this option would give me greater resilience to disk failures, but I would need to wait for the new version of SoftRAID which supports RAID6 volumes. My question is, can I create a 7 disk RAID5 volume now, and then upgrade it to a RAID6 volume later by adding an additional disk when the new version of SoftRAID becomes available?

If you have any advice on these various options, I'd be grateful.

Quote
Topic starter Posted : 11/05/2020 11:19 am
(@softraid-support)
Member Admin

Its hard to tell you which (1 volume or 2), is better, as it depends on your needs. The idea of two volumes is nice, one can back up the other.

We do intend to be able to upgrade RAID 5 to RAID 6. We do not have this working yet, and it is always possible it gets left on the cutting room floor if we need to ship.

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Posted : 11/05/2020 11:54 am
(@wisehaus)
Active Member Customer

Its hard to tell you which (1 volume or 2), is better, as it depends on your needs. The idea of two volumes is nice, one can back up the other.

We do intend to be able to upgrade RAID 5 to RAID 6. We do not have this working yet, and it is always possible it gets left on the cutting room floor if we need to ship.

Thanks as always for the response. If I may elaborate a bit:

Assuming I create a 4 disk RAID5 array in the ThunderBay 8 now and then add a second 4-disk RAID5 array later, is there any particular optimal arrangement for the disks? In other words, can I just use slots (A,B,C,D) now and then(E,F,G,H) later? Or should I use (A,C,E,G) first, and then (B,D,F,H) later?

Finally, I don't suppose there is any update on a possible release date for SoftRAID 6? I had to ask. :)

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Topic starter Posted : 12/05/2020 2:23 am
(@softraid-support)
Member Admin

Disk order is irrelevant to SoftRAID. You can move them around any time, also.

We do not know a release date, yet.

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Posted : 12/05/2020 11:20 am
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