How to add a new HDD to a RAID group and its parent storage pool

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FireMeUp84Q
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How to add a new HDD to a RAID group and its parent storage pool

Post by FireMeUp84Q »

Pardon my ignorance. I'm running QNAP QTS 5.1.0.2348. I just inserted a new Seagate 20TB HDD (already formatted in Windows 10) into the QNAP. I wish to make the HDD's storage available in an existing RAID 0 group.

1) I select Storage & Snapshots, and there's single storage pool, which is highlighted. I click on Manage: Storage Pool 1 Management opens up.
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2) I click on Action/Expand Pool. Only Create and add a new RAID group is available. Add new disk(s) to an existing RAID group is greyed out. Why is the latter option not available?

3) With Create available, I click on Next. The new HDD shows up, with RAID type Single (other options are greyed out in the dropdown).

4) I click on Next. I'm informed a different type of RAID group could cause performance degredation.
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Not good. What's wrong?
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FSC830
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Re: How to add a new HDD to a RAID group and its parent storage pool

Post by FSC830 »

Referring to manual, a raid0 can not be expanded.
Raid-groups/pools capable for expansion referring to manual: RAID 1, RAID 5, RAID 6, RAID 50 or RAID 60.

Regards

BTW: Why is new disk formatted in Windows? No need for that as NAS uses its own filesystem.
FireMeUp84Q
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Re: How to add a new HDD to a RAID group and its parent storage pool

Post by FireMeUp84Q »

OK, I didn't know RAID0 groups cannot be expanded. But what about the message that there might be a performance degradation?

About formatting in Windows: I chose to do this because I want a full format of the HDD, not a quick format. Probably it's possible to achieve this in QTS, but I didn't take the trouble to research how.
FSC830
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Re: How to add a new HDD to a RAID group and its parent storage pool

Post by FSC830 »

Adding a disk to a raidgroup/pool requires that data is restructered (distributed across all disks).
This usually decreases response times for host access. The priority for a rebuild can be set to low, medium, high, default is medium.

Regards
FireMeUp84Q
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Re: How to add a new HDD to a RAID group and its parent storage pool

Post by FireMeUp84Q »

Let me state what I really want.

I have a storage pool, which comprises 3 HDDs and 1 RAID0 group; the pool has 2 (thick) data volumes. One of the volumes is about 94% used. Hence I want to give that volume more capacity, in the form of the 20TB HDD I've mentioned. How shall I use the HDD to increase the size of the volume?
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dolbyman
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Re: How to add a new HDD to a RAID group and its parent storage pool

Post by dolbyman »

you can add a single disk to a pool, as you already rock a RAID0 (that explodes upon single failure) you not adding much more of a full failure risk anyways (so you backup game is surely superb .. right?)

https://docs.qnap.com/operating-system/ ... 3B59D.html

in your case the 'RAID group' would just be a single disk
FireMeUp84Q
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Re: How to add a new HDD to a RAID group and its parent storage pool

Post by FireMeUp84Q »

Thanks. That worked.

As for backup, the QNAP is a backup for data that are on a Windows system.
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dolbyman
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Re: How to add a new HDD to a RAID group and its parent storage pool

Post by dolbyman »

Ok..so you can always restore the data from these systems (if not..then the NAS is NOT a backup)
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