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Seagate offers low-cost 8TB hard drives
Seagate offers low-cost 8TB hard drives | ZDNet
http://www.zdnet.com/article/seagate...b-hard-drives/ "Sold by Seagate under the "Archive Label" brand and aimed at those looking for a cost-effective storage solution, the drive retails for around $270, which is far more palatable than the $1,000 or so that 8TB drive from HGST are currently going for. That works out at around $0.033 per gigabyte." |
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Seagate offers low-cost 8TB hard drives
On Monday, December 15, 2014 9:31:40 PM UTC+8, Yousuf Khan wrote:
Seagate offers low-cost 8TB hard drives | ZDNet http://www.zdnet.com/article/seagate...b-hard-drives/ "Sold by Seagate under the "Archive Label" brand and aimed at those looking for a cost-effective storage solution, the drive retails for around $270, which is far more palatable than the $1,000 or so that 8TB drive from HGST are currently going for. That works out at around $0.033 per gigabyte." So I guess these are "consumer" grade like WD Blue crap. I don't want to run a scandisk on 8 TB - would take about a day.... |
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Seagate offers low-cost 8TB hard drives
On 16/12/2014 6:26 PM, Mark F wrote:
The drives as "shingled", so you can't write random blocks without having to rewrite a bunch of partially overlayed nearby stuff. ( "Seagate SMR (Shingled Magnetic Recording)" is what Seagate calls the shingling technique.) https://www.seagate.com/files/www-co...4-3-1411us.pdf "Workload Rate Limit" (TB/year) 180 data rate, sequential is 150 MB/second. 180 TB/(150 MB/second) = 1.2 * 1 million seconds /year Doesn't seem like acceptable for use in full time sequential recording, also could keep up with 1 compressed HD camera full time without getting close to the limit So I wonder if they do something similar to what they do in SSD's where every write gets done to a completely new block, and the block gets remapped dynamically and invisibly by the drive to appear like the old block to the OS? Yousuf Khan |
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Seagate offers low-cost 8TB hard drives
Yousuf Khan wrote:
On 16/12/2014 6:26 PM, Mark F wrote: The drives as "shingled", so you can't write random blocks without having to rewrite a bunch of partially overlayed nearby stuff. ( "Seagate SMR (Shingled Magnetic Recording)" is what Seagate calls the shingling technique.) https://www.seagate.com/files/www-co...4-3-1411us.pdf "Workload Rate Limit" (TB/year) 180 data rate, sequential is 150 MB/second. 180 TB/(150 MB/second) = 1.2 * 1 million seconds /year Doesn't seem like acceptable for use in full time sequential recording, also could keep up with 1 compressed HD camera full time without getting close to the limit So I wonder if they do something similar to what they do in SSD's where every write gets done to a completely new block, and the block gets remapped dynamically and invisibly by the drive to appear like the old block to the OS? Yousuf Khan Probably. And unlike SSDs, this is going to get dog-slow with too many random small writes. This thing is more like tape than a hdd and should primarily be regarded as tape relacement (there is a significant market for that) or as read-mostly storage (also a significant market). This is not general-purpose HDD storage. Arno |
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Seagate offers low-cost 8TB hard drives
On 24/12/2014 8:55 PM, Arno wrote:
Probably. And unlike SSDs, this is going to get dog-slow with too many random small writes. This thing is more like tape than a hdd and should primarily be regarded as tape relacement (there is a significant market for that) or as read-mostly storage (also a significant market). This is not general-purpose HDD storage. Good point! It's more of a serial storage mechanism rather than a random-access storage. Yousuf Khan |
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