8TB HDD - Seagate ST8000AS0002

Well I think 8TB drives should work. Though we can't know for sure till they are tested.

As for whether this model is suitable for NAS use and compatible is another question.

Would love to hear if these things would work and would be suitable in a ReadyNAS. MMM, 24GB online in a 4 bay…

schalliol wrote:
Would love to hear if these things would work and would be suitable in a ReadyNAS. MMM, 24GB online in a 4 bay…

24 GB? :slap:

Though the trend is pretty amazing when you think about it. 10 years ago 500 GB hard drives were just being introduced (and we all thought they were huge!).

Totally! 32TB in physical space in just 3.5"x5.75"x4" for under $1000. I actually originally typed GB because this just doesn't make sense! It's a bit like the magic I felt when I first saw an ATTO Silicon Drive at MacWorld Expo Boston

From Seagate's PR

Outfitted with enterprise-class reliability and support for archive workloads, it features multi-drive RV tolerance for consistent enterprise-class performance in high density environments.

Engineered for 24×7 workloads of 180TB per year

and from the data sheet:

Load/Unload Cycles 300,000
Nonrecoverable Read Errors per Bits Read, Max 1 per 10E14
Workload Rate Limit (TB/year) 180
Power-On Hours 8760 (24×7)
Mean Time Between Failures (MTBF) (hours) 800K
Limited Warranty (years) 3

"Archive workloads"... Not sure if a typical NAS workload can always be described as simply an archive workload - but certainly some could. Either way, @ $266 a drive its a great price point. No discount for buying a 20 pack though -> http://www.amazon.com/Seagate-ST8000AS0002-20PK-ARCHIVE-128MB-3-5IN/dp/B00QPMRIFM/ref=sr_1_1?ie=UTF8&qid=1418416009&sr=8-1&keywords=ST8000AS0002&pebp=1418416012106 :(

I'm not too familiar with these specs, but 180TB/year workload rate limit sounds like it could work in many environments.

The 4TB Segate NAS Drives I just picked up compare like this:
Load/Unload Cycles 600,000 (2x the 8TB)
Nonrecoverable Read Errors per Bits Read, Max 1 per 10E14 (same as the 8TB)
Workload Rate Limit (TB/year) Could not find
Power-On Hours 8760 (24×7) (same as the 8TB)
Mean Time Between Failures (MTBF) (hours) 1MM (+200K)
Limited Warranty (years) 3

I agree that its spec'd like a NAS drive - not like an enterprise drive. Enterprise specs would have non-recoverable read errors of 1 in 10E15.

Works for me with a bunch of backup. Definitely interested in what an expected workload rate limit is, as I wouldn't think 180 TB on an 8TB is a huge amount for some applications. I've typically used enterprise drives, but the NAS drives these days just look so good for the money

Seagates Annualized Workload Rate formula:

Annualized Workload Rate = (Lifetime Writes + Lifetime Reads) * (8760 / Lifetime Power On Hours)

From this article -> http://knowledge.seagate.com/articles/en_US/FAQ/005902en?language=en_US

It's advertised as an "Archive HD" I believe the main application is "cold storage" that needs to be available, but isn't accessed often. There's a two-year old article on SMR here: http://www.zdnet.com/article/competitio ... mr-drives/

Early technology was quite sensitive to vibration, so it will be interesting to see how the Seagate stacks up in that regard.

The article ahpsi links in describes the 180TB workload as "light" and 550TB as "heavy".

Seagate enterprise drives state the workload is 550 TB/year here: http://www.seagate.com/www-content/prod ... 1404us.pdf

That datasheet also claims that 550 TB/year is 10x the workload of a desktop drive, but that spec is (not surprisingly) missing on both their desktop and NAS datasheets.