Raid 1+ 0:
I hope that I'm not in the wrong place, but I didn't see a 1+0 forum.
I've been using Thunderbays from OWC for various things including backup from my dedicated fast external hardware RAID. I was thinking that using a full 4 drive bay for a RAID 1+0 backup might be preferable with 4 8TB drives, to using larger drives for mirrors. Especially when on a beta version of SoftRAID instead of my non-functional licensed version, I was wondering:
Is this a good use for a RAID 1+0?
Is it safe enough for backup?
Is it really almost as fast as a RAID 5?
Is it relatively easy to restore?
It is 2 drive redundancy, right? Frankly, I haven't had to think about this in a while. Just need a little help and reassurance. Thanks.
Lets go through your questions.
RAID 1+0 is good for a few reasons. It handles a disk failure well. 50% of the time, it can also handle 2 disks failures. RAID 1+0 is a very "safe" RAID type. However, it is not as fast as a RAID 5.
the beta status of SoftRAID is not material. the driver is solid regardless of RAID levels.
RAID is not the same as backup, RAID is for "High Availability". meaning a disk can fail and you keep running. You still need a independent media with your data on it, preferably a second copy off site, or on the cloud. Data is fungible.
Not sure what you mean by "restore", but RAID 1+0 is easier to "recover" from in the event of a disaster.
Hope this helps!
Thank you, that does help. I did mean "recover".
So, for backup, a three drive RAID 1, with 2nd and 3rd drives rotated off site wouldn't be bad. That will just require some larger individual drives. So, if my primary working drive were SoftRAID 6 or six, I should probably need a 6 bay drive for good performance?
Off site backup would be good. I'm still figuring out which service is better for me.
Multiple backups (secondary disks) with a Mirror is always a good option. We have had Printers who remove a disk monthly for an off line secondary disk, to archive that month's jobs. All you need to do is connect the off site disk and it will rebuild.
For off site, you have lots of choices:
1. Carbon Copy Cloner for local off line.
2. Backblaze for easy backup to the cloud
3. Acronis for a more comprehensive backup package, with proactive protection against cyber intrusion (hackers/ransomware)
Thanks again. Pre Big Sur, I was fine with Chronosync, but it's been a little weird since. I'll look into your cloud suggestions. Your support seems always to go above and beyond.