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RN31600 and RAID1 with 5 disks
Hello all.
I just bought a RN31600 and need to use it with 5 disks in RAID1 mode. However, as long as i put more than 2 disks in, the option only allows to create raid5 or raid6 with my 5 drives.
I need RAID1 only, as i need to have one disk outside that gets swapped from time to time to rebuild itself and bring one outside of the office.
I know some of you will say it's not a good idea, but it's the way i want things.
So my question is : is there any way to force the readynas to create a raid1 array with my 5 disks?
thanks !
Creating a RAID1 on 5 HDDs is possible from SSH though.
Don't know if I should advise that, it depends on your experience in Linux systems.
I tried it on my unit and it worked:
## Switch to Flex-RAID from GUI ## Destroy the current volume from GUI (obviously, this wipes all data there is on it) # mdadm --create --verbose /dev/md127 --level=mirror --raid-devices=5 /dev/sd[a-e]3 [...] # cat /proc/mdstat Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] md127 : active raid1 sde3[4] sdd3[3] sdc3[2] sdb3[1] sda3[0] 483536832 blocks super 1.2 [5/5] [UUUUU] [>....................] resync = 1.4% (6895616/483536832) finish=114.8min speed=69136K/sec # mkfs.btrfs -L `hostid`:data /dev/md127 [...] # mount /dev/md127 /data mount: mount point /data is not a directory # ls -al /data lrwxrwxrwx 1 root root 9 Apr 18 03:50 /data -> /dev/null # rm /data # mkdir /data # mount /dev/md127 /data # mount | grep md127 [...] # df -h [...] ## Check that volume is seen from GUI ## Reboot gracefully from GUI to finalize procedure (so ReadyNAS OS mounts everything it needs,
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Hi,
As far as I know, RAID1 on 5 HDDs is not supported on ReadyNAS, even in Flex-RAID.
Maybe log a feature request?
If you're idea is to swap a HDD from time to time, RAID6 would allow you to do just that no? And you would have much bigger volume than a RAID1 (RAID1 on 5 HDDs will give you capacity of one HDD, RAID6 on 5 HDDs will give you capacity of 3 HDDs).
I do think it's not a good idea to do it this way, but RAID6 would do what you need.
Raid 1 does not function that way , Raid 1 with 5 Drives is not possible .Raid 1 or Raid 1+0 (Raid10) needs multiples of 2 Drives . Each HDD has a Mirror copy .
Best you can do is Raid 10 with 4 Drives and use one drive as hot spare or use 6 Drives on Raid10
Agreed. Mirroring with RAID1 is perfect for me on 5 disks, and lower range ReadyNAS allow this ! (i already have a 314 which allows this on 3 disks inside + 1 disk outside.)
With RAID5 or RAID6, am I able to swap whatever drive i want from time to time .?
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