https://www.amazon.in/dp/B07VTWX8MN?ref_=cm_sw_r_cp_ud_dp_4TNGGFZ1M1PA9426BD5V
Never buy external hard drives. They put anything they have laying around in them. With internal HDDs at least you've got a spec sheet telling you what you're buying. You can then put it in a case with a USB adapter and have external drive. Also make sure you aren't buying an SMR drive if you intend to use it in an array.
Too lazy to Google on a phone - why avoid smr in arrays?
so you saying external harddisk doesnt have the spec the say in the specsheet
He's saying there's no sheet.
i dont get it 🤔🤔
Much slower I/O causes problems for ZFS, especially when rebuilding RAID arrays. The controversy began when WD started selling SMR drives without disclosing them as SMR as part of there Red line intended for NAS systems. They eventually got a class action filed against them for this.
For internal HDDs you can find a PDF on manufacturer's website describing various properties of the drive. For external HDDs though, there is no such document. It's a lottery - you don't know what you get until you pay for it.
What other specs matter other than rpm and capacity?
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