Seagate hdd: Doble speed at halv price......

[frodr]

The heading is actually true. I guess "Recertified" is a nicer word for used. I purchased 6 units, set up a ZFS pool (4:2).

 

https://serverpartdeals.com/collections/hard-drives/products/seagate-exos-2x18-st18000nm0092-18tb-7-2k-rpm-sata-6gb-s-512e-dual-actuator-3-5-recertified-hard-drive

 

 

[Lolight]

11 hours ago, frodr said:

The heading is actually true.

I don't think you will see any increased speeds over regular HDDs.

My understanding is that these dual actuator drives require specialized interface componentry and software in order to be able to realize advertised speed increases.

They will present themselves to Unraid as two regular speed, 9TB logical units.

[JorgeB]

The original 2x7TB model was like that, and SAS only, it appeared as two LUNs, the new 16 and 18TB SATA models should appear as a single device.

[Lolight]

27 minutes ago, JorgeB said:

The original 2x7TB model was like that, and SAS only, it appeared as two LUNs, the new 16 and 18TB SATA models should appear as a single device.

Thank you for the correction.

I was looking at the SAS version of the drive.

[frodr]

5 hours ago, Lolight said:

I don't think you will see any increased speeds over regular HDDs.

My understanding is that these dual actuator drives require specialized interface componentry and software in order to be able to realize advertised speed increases.

They will present themselves to Unraid as two regular speed, 9TB logical units.

 

I did a short test copying from a nvme ssd one one server to the other server with 6 x 2x18 sata in raidz2. I say steady 400MB/s. Whether is was the pools performance or the drive I'm not sure.