Seagate Seagate Exos X series HDDs and NAS explained

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Seagate Seagate Exos X series HDDs and NAS explained

jeyare

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Here you can see current status of Seagate Exos series, follow my research (May 7th 2020) from official sources - Seagate product list, Seagate website, Synology compatibility list.
I found some misinterpretation in source from blocksandfiles.com:
"Seagate documentation for the Exos and Archive HDDs explicitly spells out that they use SMR."
What is not true as you can see below. Better is read such information from precise sources, as we do.
If you haven't read my blog yet, it's time.

Basic split of the Exos line:
- Exos E (2.5" & 3.5" form factor), 3.5" FF is a successor of well known Seagate Constellation/Enterprise Capacity and Archive series, 2.5" FF is a successor of Enterprise Performance series
- Exos X (3.5" form factor only), successor of well known Seagate Constellation CS

Exos X series - Detailed description (SATA range) of most important parameters, from NAS point of view:

1. Exos X10 - 3.5" FF - Helium filled
Capacity: 8/10 TB
Support workloads: 550TB/y, found in official product manual (no mention in official product list)
Max. Sustained Transfer Rate: 249MB/s for both sector size format in bytes (4k/512e)
Cache: 256MB
Spindle Speed: 7200 rpm
Average Latency: 4.16ms (same as for WD Ultrastar)
No defined as CMR/SMR in official Product sheet

2. Exos X12 - 3.5" FF - Helium filled
Capacity: 12 TB
Support workloads: 550TB/y, found in official product manual (no mention in official product list)
Max. Sustained Transfer Rate: 261/249MB/s up to sector size format in bytes (4k/512e)
Cache: 256MB
Spindle Speed: 7200 rpm
Average Latency: 4.16ms (same as for WD Ultrastar)
No defined as CMR/SMR in official Product sheet

3. Exos X14 - 3.5" FF - Helium filled
Capacity: 10/12/14 TB
Support workloads: 550TB/y, found in official product manual (no mention in official product list)
Max. Sustained Transfer Rate: 261-233MB/s up to sector size format in bytes (4k/512e)
Cache: 256MB
Spindle Speed: 7200 rpm
Average Latency: 4.16ms (same as for WD Ultrastar)
No defined as CMR/SMR in official Product sheet

4. Exos X16 - 3.5" FF - Helium filled
Capacity: 10/12/14/16 TB
Support workloads: 550TB/y, found in official product manual (no mention in official product list)
Max. Sustained Transfer Rate: 261-233MB/s up to sector size format in bytes (4k/512e)
Cache: 256MB
Spindle Speed: 7200 rpm
Average Latency: 4.16ms (same as for WD Ultrastar)
No defined as CMR/SMR in official Product sheet

Because I can't find mentioning about Disk/Host managed description - all the Exos X line must be based on CMR. Also the workload support up to 550TB/y is more suitable for CMR technology.

Synology compatibility list:
- Exos Xxx - passed all the models
 

jeyare

Subscriber
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833
NAS
Synology, TrueNAS
Operating system
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  2. Windows
attached you can find EOL and LTS info for Exos series
 

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  • Seagate Exos EOL.pdf
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