Skip to content
View in the app

A better way to browse. Learn more.

Unraid

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Duel Parity, Why can't I replace a data disc with a larger one ??

Featured Replies

Hi All,

 Thanks for stopping by and reading ......

 

Ok here goes:-

 

Parity 2TB

Parity2 3TB

 

disk 1: 2TB

disk 2: 2TB

disk 3: 1TB

disk 4: 1TB

disk 5: 1 TB

disk 6: 2TB

 

"Picture is a thousand words"
myunraid6.thumb.jpg.244d0efba6f21d6493333a6f88067da5.jpg

 

I want to replace 'disk 4: 1TB' with a larger 3TB drive.

I know that any replaceable 'data disk' must as large or larger, as long as it's no larger than the parity disk.....

 

1) Stop the array.

2) Unassigned the drive I want to replace.

3) Remove the drive.

4) insert the larger disc.

5) start the array.

 

 

 

In the 'Array Operation' box I get this:-  Stopped. Disk in parity slot is not biggest.   If this is a new array, move the largest disk into the parity slot.
                                                                                                                                 If you are adding a new disk or replacing a disabled disk, try Parity-Swap.

 

When I do the 'Parity-Swap' procedure it does the same.....

 

Is the problem caused with one of the 'parity discs' being 2TB

Or

Do I have to replace the 2TB parity with the 3TB disc ....... So I Have 2 x 3TB Parity Discs

 

stumped again

Thank for reading ...

 

 

  • Community Expert

The size of the parity disk must be equal to or larger than the largest data drive, this is true for both parity disks.

  • Author

Hi johnnie.black

 

Thanks for getting back so quick (again)

 

Thanks for clarification, so I'll swap the 2TB parity and replace it with larger 3TB

Use the removed 2TB to goto Disk 4: in the array to get an extra 1TB more space ...

 

again many thanks .....

 

  • Community Expert

Seems like there should be a way to rebuild 2 disks at the same time here since you have dual parity, but since one of the rebuilds is the parity disk, and the replacement for disk4 is currently parity, I'm not sure you could get unRAID to let you do it.

 

I wonder if johnnie.black has ever tried it?:D

  • Community Expert

He can, but he would be unprotected in case of a disk failure.

  • Community Expert
2 minutes ago, johnnie.black said:

He can, but he would be unprotected in case of a disk failure.

I wouldn't recommend it either, just wondering if it could be done.

  • Community Expert
2 minutes ago, trurl said:

I wouldn't recommend it either, just wondering if it could be done.

 

It would be like this situation, in this case he had to do it since parity and another disk were disable:

 

  • Author

Hi Both

 

Just put the original drive back int slot 4 .... 'Parity-Sync/Data-Rebuild In Progress'

approx 1Hr.21Mins to go .....

 

Then I'm back where I started

After that I'll replace the 2TB parity with The new 3TB so I have 2 x 3TB parity drives

Cheers ........

 

Archived

This topic is now archived and is closed to further replies.

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.