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Comment on If you were to suddenly come into possession of 12+ enterprise-grade SAS hard drives, how would you go about incorporating them into your homelab?

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archomrade@midwest.social ⁨11⁩ ⁨months⁩ ago

This is a great observation, and it made me do some math:

If my point of comparison is something like a seagate ironwolf 4T vs a WD Ultrastar 4T:

Seagate Ironwolf: 
- 3.7W*24 Hours/day*635 days/year = 32kWh per year * $0.18/kWh = $5.84 per year in power usage * 12 disks in an array = $70.02 per year

WD Ultrastar:
- 7W*24 Hours/day*635 days/year = 61kWh per year * $0.18/kWh = $11.05 per year in power usage * 12 disks in an array = $132.6 per year

Seems like i’d save maybe $70 per year. I feel like that difference might even be justifiable if the enterprise drives are half as likely to fail (seagate ironwolf has an AFR of 0.87%, WD Ultrastar is 0.44%).

Something to think about, at least

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acockworkorange@mander.xyz ⁨11⁩ ⁨months⁩ ago
635 days is a fucking long year.

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- archomrade@midwest.social ⁨11⁩ ⁨months⁩ ago
  Lol, thanks
  
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- jkrtn@lemmy.ml ⁨11⁩ ⁨months⁩ ago
  2020 mood math.
  
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- CazRaX@lemmy.world ⁨11⁩ ⁨months⁩ ago
  Sometimes a day just FEELS like it’s 48 hours long.
  
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TheInsane42@lemmy.world ⁨11⁩ ⁨months⁩ ago
In defence, the power prizing here is a tad different, €0.45/KWh was the prize here. Also, when those disks are given away, they are usually smaller then the current standard and less efficient. On the other hand, those enterprise grade disks generate some heat, saving on the heating bill.

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- archomrade@midwest.social ⁨11⁩ ⁨months⁩ ago
  that’s all true. I’m anxious to get them open and see what they test at; it really seems like some of them are unused, but that could just be because they were refurbished and re-packaged. I’m really curious what the spin times are.
  
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