topic Re: Positions of SSD/HDD disks in FAS 2720 controller in ONTAP Hardware

Positions of SSD/HDD disks in FAS 2720 controller

bnies — Wed, 04 Jun 2025 09:49:36 GMT

Hello,

We just got our FAS 2720 and it came with 960 GB SSD and 10 TB HDD in the controller plus five shelves with 10 TB HDDs. The SSD drives seem to be positioned randomly in the head shelf. Is there a reason for this? Does the position of the SSD matter? In the past I placed the SSD of our FAS systems all to the first drive bays.

Best regards,

Bernd

Re: Positions of SSD/HDD disks in FAS 2720 controller

SpindleNinja — Wed, 03 May 2023 13:04:31 GMT

They should be in the chassis with that config. can you clarify which slots you mean by randomly?

Re: Positions of SSD/HDD disks in FAS 2720 controller

bnies — Wed, 03 May 2023 13:23:05 GMT

The setup was this. Shelf ID 0 = controller.

00.0 : NETAPP X374_S164A960ATE NA53 915.4GB 520B/sect (S5JENA0W204306)
00.1 : NETAPP X374_S164A960ATE NA53 915.4GB 520B/sect (S5JENA0W204304)
00.2 : NETAPP X380_WVAXE10TA07 NA01 9324.2GB 520B/sect (VHGUPZXM)
00.3 : NETAPP X380_WVAXE10TA07 NA01 9324.2GB 520B/sect (VHGUTETM)
00.4 : NETAPP X380_WVAXE10TA07 NA01 9324.2GB 520B/sect (VHGT5E1M)
00.5 : NETAPP X380_WVAXE10TA07 NA01 9324.2GB 520B/sect (VHGUMTEM)
00.6 : NETAPP X380_WVAXE10TA07 NA01 9324.2GB 520B/sect (VHGTMTVM)
00.7 : NETAPP X380_WVAXE10TA07 NA01 9324.2GB 520B/sect (VHGUBEJM)
00.8 : NETAPP X380_WVAXE10TA07 NA01 9324.2GB 520B/sect (VHGUBE2M)
00.9 : NETAPP X380_WVAXE10TA07 NA01 9324.2GB 520B/sect (VHGUHLMM)
00.10: NETAPP X374_S164A960ATE NA53 915.4GB 520B/sect (S5JENA0W204307)
00.11: NETAPP X374_S164A960ATE NA53 915.4GB 520B/sect (S5JENA0W204305)

Re: Positions of SSD/HDD disks in FAS 2720 controller

SpindleNinja — Wed, 03 May 2023 13:38:03 GMT

That looks right, on the "ends" there.

Re: Positions of SSD/HDD disks in FAS 2720 controller

andris — Wed, 03 May 2023 14:18:18 GMT

That is correct positioning. Disks are populated from the "outside -> in" from both ends.

"Add disks" documentation mentions this.

https://docs.netapp.com/us-en/ontap/disks-aggregates/add-disks-node-task.html

Re: Positions of SSD/HDD disks in FAS 2720 controller

bnies — Thu, 04 May 2023 04:43:07 GMT

Thanks. That must be something new. I don't remember this when I had to setup a Netapp some years ago.