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Raid 1 on ReadyNAS 204 with 4 discs
I just got a ReadyNAS 204 with 4 8TB hard drives yesterday. It has 6.10.2 firmware. It came preconfigured with Raid 5, but I want Raid 1 with a 2-disc volume, mirrored to the other 2 discs. I h...
Maeve1956 wrote:
Can anyone advise on how to set up RAID 1 with 4 discs so that I have one data volume on 2 discs which is being mirrored to the other 2 discs?
The mode you are describing isn't called RAID-1. It's called RAID-10.
So try destroying the RAID-1 volume you created, and then create a RAID-10 volume after selecting all 4 disks.
Maeve1956 wrote:
Can anyone advise on how to set up RAID 1 with 4 discs so that I have one data volume on 2 discs which is being mirrored to the other 2 discs?
The mode you are describing isn't called RAID-1. It's called RAID-10.
So try destroying the RAID-1 volume you created, and then create a RAID-10 volume after selecting all 4 disks.
Thank you. I was just reading about RAID 10 last night, and I suspected that was the method I needed to use. I had not even heard of RAID 10 before - been using RAID 5 at work for years and that was the only one I was really familiar with. Learn something new every day, that's my motto. Thanks again!
P.S. It's going to take 49 hours to sync! Patience is a virtue.
RAID 10 is a RAID1 (mirror) of two RAID0 (concatenated) drives. That does sound like what you want, though you've not quite described it that way. I'm not quite sure why you'd want that over RAID5 or RAID6, though. The speed gain is not going to be realized in an RN204, and you still can lose the volume with a second drive failure.
Yes, on review RAID 10 is exactly what I want. I had not heard of RAID 10 before. Everywhere I worked we always used RAID 5, and I have configured RAID 5 many times, but never any other level.
I wanted RAID 1 because it is easier to recover from a single disc failure with RAID 1. Secondly, this NAS has 32TB, and with RAID 5 it gives me 21TB, which is a LOT more than I need or will ever need. I only need about 10TB max, so I'm willing to sacrifice space for ease of data recovery. Thirdly, by having a mirrored backup volume I can eliminate the external USB drive I have been using to mirror my older, 8TB NAS, with which I am not happy.
All I will be using the NAS for is to store mirrors of important data folders, such as My Documents, to store copies of full weekly and incremental daily backup files for 2 computers, and to store media files for Plex. I don't have thousands of DVDs and hundreds of CDs or buckets of downloaded media as so many people have, so I don't need the 21 TB of space. So why did I buy such a large NAS? Because it was being sold second-hand on eBay at a very good price.
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