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Comment Re:Preventable Catastrophe (Score 1) 117

So what about the asteroid that was kicked out by some event in a solar system far far away, got accelerated around a Jupiter sized plant and flung out at speed. Now I accept not very likely, and we'd be unlucky to be on the receiving end. but that could come in quick enough that we would not spot it until late in the day?

Comment One of the reasons its so lethal, is that its not. (Score 1) 165

One of the reasons its so lethal, is that its not so lethal, SARS was so lethal it killed people before they had chance to infect may others. Isolate and wait = problem gone. Covid much less so, so spreads everywhere, then it bites many more people...

Comment Re:Not interesting without instruments (Score 1) 155

Its one things accelerating to a close to the speed of light, but when it gets their it'll be travelling so fast that it'll flash by with little time for any measurements. Alternatively you could try a breaking maneuver, but the stresses on something so light would I'm sure render it useless. So instead slow down in down earlier - but any reasonable time frame for this would greatly extend the transit time (this is not linear , so starting breaking half way their would greatly more than double the time), or perhaps we should just burn it up in the atmosphere, and any (potentially) intelligent observer would probably just think it a meteor?

Comment Re:CMR & SMR? (Score 1) 221

I believe the CMR (Conventional Magnetic Recording) used by Seagate(?) is just another name for PMR (Perpendicular Magnetic Recording) - which is the standard way (think like concentric rings) SMR is a way of packing more in by allowing the overwrite of the next tracks (so more can be packed in), see https://en.wikipedia.org/wiki/.... But if track next door contains data, that data needs to be re-written - therefore the drive has a lot more work to do in SMR when writing. When the drive is sparsely populated or only written to occasionally then the caching hides this additional effort, but when the cache runs out (quickly) then this will impact write speeds (massively in my experience) - thus under busy workloads this drives take a long time to write data, slowing everything down. Reliability is also in question given more work.... The argument goes if you just want a very large cheap drive, that your just going to write to and leave (for archive) - (SMR has higher density, therefore cheaper, and allows squeesing more from existing design, i.e. number of platters)- then SMR fine, just dont try to use in an everyday scenario (where may be heavily used).... IMHO - everyone is looking for the cheapest therefore as consumers we are driving the market, but it should be made clear (I dont want one in my NAS) - thus the point of the initial post.

Comment Seagate are little better (Score 1) 221

Very timely - Following the installation of standard Baracuda drive 3 weeks ago, I noticed latency write time very quickly reached ridiculous levels > 220ms. Some googling revealed that the cheaper end are now SMR drives (this was 8Tb). It was returned for a refund and replaced with an IronWolf version, now under same workload write times 10ms. It is ridiculous that this change is far from clear, although I eventually found something buried in a spec sheet, that with more research brought me to the SMR conclusion, this was found only after a lot of digging. It is deceitful that this is not clear upfront. But lots of people dont want these drives (most tech heads) and so the manufacturers ARE hiding it (in different ways). This if false advertising, I would not expect to buy a Mustang and then find Ford swapped the engine for a tiny power plant inside with the excuse of "oh, you didn't notice the small print buried in the middle of the brochure"
Data Storage

Storage Vendors Are Quietly Slipping SMR Disks Into Consumer Hard Drives (arstechnica.com) 221

"Storage vendors, including but reportedly not limited to Western Digital, have quietly begun shipping SMR (Shingled Magnetic Recording) disks in place of earlier CMR (Conventional Magnetic Recording) disks..." writes Ars Technica.

"In addition to higher capacities, SMR is associated with much lower random I/O performance than CMR disks offer."

Long-time Slashdot reader castrox shares their detailed report: Shingled Magnetic Recording is a technology that allows vendors to eke out higher storage densities, netting more TB capacity on the same number of platters — or fewer platters, for the same amount of TB. Until recently, the technology has only been seen in very large disks, which were typically clearly marked as "archival"...

Storage vendors appear to be getting much bolder about deploying the new technology into ever-smaller formats, presumably to save a bit on manufacturing costs... [S]everal users have reported that these disks cannot be successfully used in their NAS systems — despite the fact that the name of the actual product is WD Red NAS Hard Drive.

Citing a statement from Western Digital, the article concludes that "The writing on the wall here seems clear. Yes, Western Digital slid SMR drives into traditional, non-enterprise channels — and no, the company doesn't feel bad about it, and you shouldn't expect it to stop...

"Western Digital doesn't appear to be the only hard drive manufacturer doing this," they write, noting that the storage-news web site Blocksandfiles.com "has confirmed quiet, undocumented use of SMR in small retail drives from Seagate and Toshiba as well."

Comment Re:You can't recreate it on earth (Score 1) 70

Given that there is a school of thought suggesting that traumatic/stressful events strengthen and focus the impact of the recall.... How much did the risks and stressful events of the mission (especially following 13!), strengthen Edgar's view....? Now I'm not saying that it must be amazing... I remember seeing the "Dream is alive" at an IMAX, in the late 80's (a rare cinema experience at the time), all about the space shuttle with loads of shots of the earth below.... this has had a long lasting effect on me....

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