On 11/1/20 6:47 PM, Aaron Burt wrote:
On 2020-11-01 13:34, Keith Lofstrom wrote:
Who makes, and who sells, reliable "CMR" hard drives
with a decent (3 to 5 year) full replacement warranty?
Great topic, inspired some fun reading. After they were caught
selling SMR drives without labeling them as such, WD and Seagate
released articles talking about which models are SMR vs. PMR/CMR:
https://blog.westerndigital.com/wd-red-nas-drives/
https://www.seagate.com/internal-hard-drives/cmr-smr-list/
I think all of these have 3 year warranties.
Something else worth looking at is HAMR. Seagate was planning to launch
20TB drives in 2020, but I assume the whole pandemic situation pushed
back their schedule.
Those were going to be the last CRM/SMR drives. Going forward to 20+ TB
capacities it looks like the new thing is HAMR (Heat Assisted Magnetic
Recording). Not ready yet, but supposedly it's a thing.
https://www.anandtech.com/show/15064/seagate-18-tb-hdd-due-in-first-half-2020-20-tb-drive-to-ship-in-late-2020
IMO the SMR idea was a cheap hack to workaround a physics limitation.
HAMR is supposed to solve the speed problem while increasing capacity
far beyond CMR/SMR.
-Ben
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