ReadyNas Duo v1 RAID-X Question

What version of RAIDiator?

If you download your logs (Status > Logs > Download all Logs) and extract the zip contents what are the contents of partition.log?

Radiator 4.1.8

mdgm is wanting to check (a) that your firmware supports 2 TB drives (4.1.8 does), and (b) if your current RAID array has 4K alignment (unknown, which is why he asked to see partition.log).

While you can simply replace the drives one at a time, to get the best performance with 2 TB you need 4K alignment. If you don't have that already, you would need to do a factory reset to get it, and restore from backup.

Maybe you can post the partition.log info.

Contents of partition.log (failed disk has been removed from system)

Disk /dev/hde doesn't contain a valid partition table

WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/hde: 999.9 GB, 999991611392 bytes
255 heads, 63 sectors/track, 121575 cylinders, total 1953108616 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x00000000


Disk /dev/hdc: 999.9 GB, 999991611392 bytes
255 heads, 63 sectors/track, 121575 cylinders, total 1953108616 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x62207372

Device Boot Start End Blocks Id System
/dev/hdc1 2 4096001 2048000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/hdc2 4096002 4608001 256000 82 Linux swap / Solaris
Partition 2 does not end on cylinder boundary.
/dev/hdc3 4608002 1953092233 974242116 5 Extended
/dev/hdc5 4608003 1953092233 974242115+ 8e Linux LVM

Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sda1 1 1953520064 976760032 c W95 FAT32 (LBA)

Thanks for all the replies so far.

So I assume from my partition.log my array is not 4K aligned?

I've just ordered a 2TB WD Red, so I can just slap it in when I receive it, and he array will be rebuilt as a 1TB Mirror. Then in the future when the remaining 1TB Seagate fails I can replace it with another 2TB drive and do a factory reset to rebuild the array as a 2TB 4K aligned mirrored array?

I've got my NAS backed up to an external USB drive, does the ReadyNAS have a simple utility to restore from USB once the factory reset has been carried out and the 4K aligned 2TB array has been created?

Yes a factory reset would be needed for 4k sector partition alignment. You could use Frontview backup jobs to restore your data from backup.

Thanks