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ST8000DM004 is SMR, not CMR. Seagate did NOT disclose.
While I love the capacity of the drive, the fact that Seagate did not disclose that this drive was SMR technology has rendered it useless for my purposes, which was for a RAID 1 XBOX external hard drive. For those unaware, SMR is Shingled Magnetic Recording versus the Conventional Magnetic Recording. The way shingled works is much like your roofing shingles, where bits are laid down in order. The issue is that when a single bit needs to be rewritten, the ENTIRE shingle sector must be written (yes, I'm simplifying the tech a little intentionally). Not a problem UNLESS you rewrite portions of the drive regularly... Like in a RAID configuration. This was not disclosed and as such, entirely NEW drives and a NEW enclosure must be purchased to replace this unit which is ALREADY IN SERVICE. As such, AVOID THESE DRIVES except for offsite backup purposes as otherwise you will have HORRIBLE issues with them. Seagate should be ashamed that they intentionally mislead the consumer and then when the new became public, blamed the consumer for choosing to not buy more expensive corporate drives. At this point, I've heard that Toshiba drives are not being misrepresented, so they will be my future purchases from here on out, as Seagate has lost my trust forever from this. The drive I had was the 8TB model: ST8000DM004.
April 2020 · Electronics · verified purchase
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