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Joined 3 years ago
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Cake day: June 24th, 2023

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  • Both WD Blues and Seagate Barracudas are (often) CMR.

    I don’t know about WD Blue but modern Barracudas (not Pro!) use SMR.

    But anyway, I wanted to add a thought regarding SMR vs. CMR: It’s true that SMR has inferior write speed compared to CMR and that you can experience the effect even after writing a few gigabytes. I don’t know if I would call it unbelievably slow though: When writing to SMR drives, I experienced write speeds around 30 MiB/sec which is slow but considering you may be writing to a NAS that is only connected to a 1 Gbps network it is only around 30 % of the write speed you may reach with proper drives. It’s slow but it gets the job done when you’re not in a hurry and have a tight budget.

    Also there are other possible bottlenecks you may encounter: I for example built my homeserver with used enterprise drives in mind and therefore opted for software RAID 6 for double the fail-safety. Turns out that writing to that array is so heavy on my servers CPU that it throttles writing to almost the same point as SMR drives which defeats the whole point of using enterprise drives. 🤣 This may not be a problem for OP because they wrote about buying 2 or 3 drives but everyone should always consider the whole system and not single components.