this post was submitted on 28 Nov 2023
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We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.

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Do MAMR drives carry an early adopter risk relative to CMR drives? (alien.top)
submitted 11 months ago by [email protected] to c/[email protected]
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I have a choice between two Toshiba HDDs: MG09ACA18TE and MG07ACA14TE. According to this datasheet, the first one is a 18TB Helium MAMR drive and the second is a 14TB Helium CMR drive.

The 18TB translates to a better $/TB where I live, which is the main reason why I was leaning towards it. Also, Toshiba claims that MAMR technology "has been tried and tested for many years".

Do you have any knowledge of or experience with MAMR? Is MAMR technology likely to be as reliable as CMR? Or should I get the CMR drive instead?

Thanks

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[–] [email protected] 1 points 11 months ago

There is no need to use MAMR for anything up to 24TB, because CMR is possible for those sizes. For 18TB, I would use and have used CMR for years, I have tons of 18TB CMR drives in use.

There are 24TB drives incoming ( https://www.seagate.com/content/dam/seagate/en/content-fragments/products/datasheets/exos-x24/exos-x24-DS2080-2307US-en_US.pdf ), everything below that is available. Only above 24TB MAMR or HAMR will probably be necessary, with 28 TB SMR drives on the horizon.