Remove RAID GROUP from Storage POOL

Questions about SNMP, Power, System, Logs, disk, & RAID.
Post Reply
TheMiloNet
New here
Posts: 2
Joined: Tue Jun 22, 2021 6:04 pm

Remove RAID GROUP from Storage POOL

Post by TheMiloNet »

Hi all,
it's possible remove a Raid Group of Storage Pool?

I mistakenly added a new raid 1 instead of adding two discs to the current raid 10. The storage pool has not yet been extended at the space level. Is it possible to remove the newly added raid1 and enlarge raid 10?

All discs are same sizes

See attachments

Thanks
You do not have the required permissions to view the files attached to this post.
P3R
Guru
Posts: 13190
Joined: Sat Dec 29, 2007 1:39 am
Location: Stockholm, Sweden (UTC+01:00)

Re: Remove RAID GROUP from Storage POOL

Post by P3R »

TheMiloNet wrote: Tue Jun 22, 2021 6:11 pm Is it possible to remove the newly added raid1...
No
...and enlarge raid 10?
No that's also not possible.

A RAID 10 can only be expanded by replacing disks with larger, not by adding disks. If using a RAID 10 and wanting to add disks to a pool, you need to add them as separate RAID groups like you have done now. The only way to get a RAID 10 containing all your disks disks would be to backup all data and to reinitialize the storage from scratch.

RAID 5 and RAID 6 can be expanded by adding disks as well as replacing them with larger.
RAID have never ever been a replacement for backups. Without backups on a different system (preferably placed at another site), you will eventually lose data!

A non-RAID configuration (including RAID 0, which isn't really RAID) with a backup on a separate media protects your data far better than any RAID-volume without backup.

All data storage consists of both the primary storage and the backups. It's your money and your data, spend the storage budget wisely or pay with your data!
TheMiloNet
New here
Posts: 2
Joined: Tue Jun 22, 2021 6:04 pm

Re: Remove RAID GROUP from Storage POOL

Post by TheMiloNet »

Bad news but... thanks :(
Post Reply

Return to “System & Disk Volume Management”