topic Re: FAS2220 Cannot add specified disks to the aggregate in ONTAP Discussions

FAS2220 Cannot add specified disks to the aggregate

StevenFoo — Wed, 04 Jun 2025 10:03:05 GMT

We encounter the error when trying to add disk to aggregate:

aggr add aggr0 -g rg0 -d 0a.01.14
aggr add: Cannot add specified disks to the aggregate because the aggregate size limit for this system type would be exceeded.

We increase raidsize from 21 to 28 also we could not fix the error.

What is the limit here?
Any one have any ideas. We would like to assigned all the spare disk to the respective raidgroup.

Our current setup:

aggr status -s

RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks)
--------- ------ ------------- ---- ---- ---- ----- -------------- --------------
Spare disks for block checksum
spare 0a.01.14 0a 1 14 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
spare 0a.01.16 0a 1 16 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
spare 0a.01.18 0a 1 18 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
spare 0b.01.15 0b 1 15 SA:B 0 BSAS 7200 1695466/3472315904 1695759/3472914816
spare 0b.01.17 0b 1 17 SA:B 0 BSAS 7200 1695466/3472315904 1695759/3472914816
spare 0b.02.0 0b 2 0 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
spare 0b.02.1 0b 2 1 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
spare 0b.02.2 0b 2 2 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
spare 0b.02.13 0b 2 13 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
spare 0b.02.14 0b 2 14 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
spare 0b.02.15 0b 2 15 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
spare 0b.02.16 0b 2 16 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
spare 0b.02.17 0b 2 17 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
spare 0b.02.18 0b 2 18 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
spare 0b.02.19 0b 2 19 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
spare 0b.02.20 0b 2 20 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
spare 0b.02.21 0b 2 21 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
spare 0b.02.22 0b 2 22 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
spare 0b.02.23 0b 2 23 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168

aggr status -v
Aggr State Status Options
aggr0 online raid_dp, aggr root, diskroot, nosnap=off, raidtype=raid_dp,
64-bit raidsize=28, ignore_inconsistent=off,
snapmirrored=off, resyncsnaptime=60,
fs_size_fixed=off, snapshot_autodelete=on,
lost_write_protect=on, ha_policy=cfo,
hybrid_enabled=off, percent_snapshot_space=0%,
free_space_realloc=off

Volumes:....

Plex /aggr0/plex0: online, normal, active
RAID group /aggr0/plex0/rg0: normal, block checksums
RAID group /aggr0/plex0/rg1: normal, block checksums

aggr status -r aggr0
Aggregate aggr0 (online, raid_dp) (block checksums)
Plex /aggr0/plex0 (online, normal, active, pool0)
RAID group /aggr0/plex0/rg0 (normal, block checksums)

RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks)
--------- ------ ------------- ---- ---- ---- ----- -------------- --------------
dparity 0a.00.11 0a 0 11 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
parity 0a.00.2 0a 0 2 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0a.00.4 0a 0 4 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0a.00.9 0a 0 9 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0a.00.7 0a 0 7 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0a.00.8 0a 0 8 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0a.00.6 0a 0 6 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0a.00.10 0a 0 10 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0a.01.0 0a 1 0 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0a.00.0 0a 0 0 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0b.01.1 0b 1 1 SA:B 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0a.01.2 0a 1 2 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0b.01.3 0b 1 3 SA:B 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0a.01.4 0a 1 4 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0a.01.10 0a 1 10 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0b.01.11 0b 1 11 SA:B 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0b.01.5 0b 1 5 SA:B 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0a.01.6 0a 1 6 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0b.01.7 0b 1 7 SA:B 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0a.01.8 0a 1 8 SA:A 0 BSAS 7200 1695466/3472315904 1695759/3472914816
data 0b.01.9 0b 1 9 SA:B 0 BSAS 7200 1695466/3472315904 1695759/3472914816

RAID group /aggr0/plex0/rg1 (normal, block checksums)

RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks)
--------- ------ ------------- ---- ---- ---- ----- -------------- --------------
dparity 0b.02.3 0b 2 3 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
parity 0b.02.4 0b 2 4 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.5 0b 2 5 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.6 0b 2 6 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.7 0b 2 7 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.8 0b 2 8 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.9 0b 2 9 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.10 0b 2 10 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.11 0b 2 11 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168
data 0b.02.12 0b 2 12 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168

Re: FAS2220 Cannot add specified disks to the aggregate

Ontapforrum — Mon, 21 Mar 2022 19:11:33 GMT

It could be that the max supported raidgroup size for the particular disk type has exceeded.

Please refer to HWU for the limits.

Also, I see that you are trying to add disk to - rg0

Instead, can you try adding it to - rg1

Also, let us know:

1) Data ontap version?

2) Current aggregate aggr0 size?

Re: FAS2220 Cannot add specified disks to the aggregate

cruxrealm — Mon, 21 Mar 2022 20:38:42 GMT

Different system models have aggregate limits. As Ontapforrum mentioned, check the system model and its aggregate limit on Netapp Hardware Universe. https://hwu.netapp.com/Home/Index

Re: FAS2220 Cannot add specified disks to the aggregate

TMACMD — Mon, 21 Mar 2022 21:14:56 GMT

The answer is in your post. The aggregate would be over it’s limit with the additional drive. Check the aggregate current size and compare to hardware universe. I suspect that will confirm

Re: FAS2220 Cannot add specified disks to the aggregate

StevenFoo — Tue, 22 Mar 2022 01:10:08 GMT

Tried rg1, still error:

aggr add aggr0 -g rg1 -d 0a.01.14
aggr add: Cannot add specified disks to the aggregate because the aggregate size limit for this system type would be exceeded.

1) Data ontap version? => NetApp Release 8.1.4P10 7-Mode:

2) Current aggregate aggr0 size?

Both raid group rg0 and rg1 also giving the same error message.

Aggr State Status Options
aggr0 online raid_dp, aggr root, diskroot, nosnap=off, raidtype=raid_dp,
64-bit raidsize=28, ignore_inconsistent=off,
snapmirrored=off, resyncsnaptime=60,
fs_size_fixed=off, snapshot_autodelete=on,
lost_write_protect=on, ha_policy=cfo,
hybrid_enabled=off, percent_snapshot_space=0%,
free_space_realloc=off

Volumes: vol0, DataLog_vol, TestProg_vol, Eng_vol, Eng_NFS_temp,
Eng_NFS_vol

Plex /aggr0/plex0: online, normal, active
RAID group /aggr0/plex0/rg0: normal, block checksums
RAID group /aggr0/plex0/rg1: normal, block checksums

Re: FAS2220 Cannot add specified disks to the aggregate

StevenFoo — Tue, 22 Mar 2022 00:29:47 GMT

I look at the document 8.1.4_7-Mode-FAS_EOA.pdf (netapp.com)

However there is no information on the aggregate limit.

It just mentioned N/A.

Re: FAS2220 Cannot add specified disks to the aggregate

StevenFoo — Tue, 22 Mar 2022 01:51:59 GMT

Unfortunately the hardware universe do not provide the limit for aggregate.
Also Storage limits (netapp.com) we could not see the aggregate limit.
How could you check?
Our total drive is within the limit.

The limit for RAID-DP group size is which we already set for the aggr

SATA/BSAS/FSAS/MSATA/ATA: 20

However in RAID-DP group rg1 we only have 10 disks assigned.
Why we can't add additional disks to make it to max. 20?

Re: FAS2220 Cannot add specified disks to the aggregate

cruxrealm — Tue, 22 Mar 2022 03:08:21 GMT

As I recall, max size aggregates are model and ontap version dependent. I believe for FAS2220 it was 120TB (maybe less) for RAID-DP. During those times, we do not create aggregates more than 100TB. The max cap limit for that model is 180TB I think.

Re: FAS2220 Cannot add specified disks to the aggregate

StevenFoo — Tue, 22 Mar 2022 03:22:37 GMT

The current data disk (minus parity and dparity) size is 60TB in both rg0 and rg1 combine.

This is base on total disk * the size in MB / 1024 /1024.

There is along way to go to reach 100TB.

We are still stuck where we are not allow to add even we are below the limit.

Re: FAS2220 Cannot add specified disks to the aggregate

cruxrealm — Tue, 22 Mar 2022 03:47:04 GMT

After looking further at your configuration, I think you are hitting the raid-dp disk count limit.
It looks like your rg0 has 21 drives that is over the limit (SATA/BSAS/FSAS/MSATA/ATA: 20). You might want to reconfigure your aggregate to stay within the limit.

Re: FAS2220 Cannot add specified disks to the aggregate

StevenFoo — Tue, 22 Mar 2022 03:52:49 GMT

Unfortunately we can't remove 1 disk out of it from the 21.

Anyway we found the following in one of the internet site.
For FAS 2200 series, there is limit of 60TB max. per aggregate.

I think that's the reason we can't go beyond that. Do you agree with it?

Re: FAS2220 Cannot add specified disks to the aggregate

cruxrealm — Tue, 22 Mar 2022 04:35:40 GMT

That can be true. Another thing you can do is to upgrade the Ontap version to 8.2.5P3 and see if that makes a difference. I believe the aggregate max size was adjusted on 8.2.x.

Re: FAS2220 Cannot add specified disks to the aggregate

StevenFoo — Tue, 22 Mar 2022 05:21:15 GMT

I tried to find the information for 8.2.5P3 in release notes and etc. Still could not find the information for aggregate limit size.

Anyway our FAS2220 8.1.4P10 is no longer support by NetApp as it is already EOS/EOA.

As such there is no way we could upgrade that. And 8.2 required new license key with 28 character if not mistaken. There is no way for us to generate new license key.