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Forum Discussion
fondy
Jan 10, 2018Tutor
Disc to Readynas 524
Hi all I have a Readynas Ultra 4 and four Seagate st2000dl003-9vt166 2TB discs and I am using it at home for backing up my photos and other thing. The Ultra and Seagate discs are almost 10 years...
- Jan 11, 2018
fondy wrote:
Hi StephenB Thank you for your reply. Maybe I should go for 2 WD80EFZX discs and leaving 2 slots open. ... And in future when 10GB+ discs become more affordable I can use these in slot 3 and 4. Regards PaalThat's a reasonable approach.
fondy wrote:
I have to use Raid-1 I guess?Just use the default XRAID. That maintains single redundancy, and can handle mixed sizes (as long as the new disks are bigger than the existing disks).
Under the covers, XRAID will use RAID-1 with two disks. If you go to 2x8TB + 2x12TB, it will convert that to a 4x8TB RAID-5 group and add a 2x4TB RAID-1 group (to use the extra space on the 12 TB disks). These are merged into one volume/file system, so all you'd see is a 28TB volume.
fondy
Jan 11, 2018Tutor
Hi StephenB Thank you for your reply. Maybe I should go for 2 WD80EFZX discs and leaving 2 slots open. I have to use Raid-1 I guess? And in future when 10GB+ discs become more affordable I can use these in slot 3 and 4. Regards Paal
StephenB
Jan 11, 2018Guru - Experienced User
fondy wrote:
Hi StephenB Thank you for your reply. Maybe I should go for 2 WD80EFZX discs and leaving 2 slots open. ... And in future when 10GB+ discs become more affordable I can use these in slot 3 and 4. Regards Paal
That's a reasonable approach.
fondy wrote:
I have to use Raid-1 I guess?
Just use the default XRAID. That maintains single redundancy, and can handle mixed sizes (as long as the new disks are bigger than the existing disks).
Under the covers, XRAID will use RAID-1 with two disks. If you go to 2x8TB + 2x12TB, it will convert that to a 4x8TB RAID-5 group and add a 2x4TB RAID-1 group (to use the extra space on the 12 TB disks). These are merged into one volume/file system, so all you'd see is a 28TB volume.
- fondyJan 11, 2018TutorThanks a lot :)
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