topic Re: Performance difference between X357A-R6 vs X356A-R6 disks in ONTAP Hardware

Performance difference between X357A-R6 vs X356A-R6 disks

Maurice-FreeOnes — Wed, 04 Jun 2025 10:55:59 GMT

Hello,

Can somebody explain to me the performance difference between X357A-R6 vs X356A-R6 disks?

thank you very much!

Regards, Maurice

Re: Performance difference between X357A-R6 vs X356A-R6 disks

SpindleNinja — Tue, 25 Aug 2020 14:09:20 GMT

hwu.netapp.com is your friend!

Part Number	Type	Marketing Capacity	Physical	Right-Sized	Encrypted	RPM	Checksum	Interface Speed	EOA	EOS
X356A-R6	SSD	3840 GB	3576 GiB	3576 GiB	no		BCS	12 Gbps, 3 Gbps, 6 Gbps	09-Dec-2019	31-Jan-2025

Part Number	Type	Marketing Capacity	Physical	Right-Sized	Encrypted	RPM	Checksum	Interface Speed	EOA	EOS
X357A	SSD	3840 GB	3576 GiB	3576 GiB	no		BCS	12 Gbps, 6 Gbps

Re: Performance difference between X357A-R6 vs X356A-R6 disks

paul_stejskal — Wed, 26 Aug 2020 20:55:42 GMT

I believe the 356 is older and it supports the older 3Gb/s SAS shelves according to HWU. It may have the 3.5" enclosure too or an adapter for it I'm not sure. But the 356 is listed to support the 3Gb shelves but the 357 is not. Probably exact same SSD otherwise.

If you're ordering a new one, 357 would probably be what you need.

Re: Performance difference between X357A-R6 vs X356A-R6 disks

SpindleNinja — Wed, 26 Aug 2020 21:43:07 GMT

the 356 is also EOA

Re: Performance difference between X357A-R6 vs X356A-R6 disks

Maurice-FreeOnes — Thu, 27 Aug 2020 06:22:24 GMT

Hi everybody,

Yes I know about HWU. Sorry for not asking it right.

When I look on Ebay there is a big difference is pricing of these 2 models. The new one is about 2-3 times more expensive.

That's what made me think there must be differences in speed between the 2 models. Since the X357A is a new one I tried to find test reports, but couldn't find anything thru Google.

Regards, Maurice