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#51
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A simple way to transfer photos from your phone to Windows without installing anything on either
In article , Ken Blake
wrote: I've bought a new terabyte disk, and now have two terabyte disks side by side (which I might RAID once I clean them out - but I never did RAID before and googling finds that there are a LOT of up-front decisions to make). If you mean RAID 0 (striping), although it sounds like it should speed up disk access, my experience is that it doesn't. then you did something wrong, perhaps using a ****ty raid controller or it was bottlenecked with a slow link, such as usb 2. raid 0 definitely speeds things up, but doubles the risk of failure. If you mean RAID 1 (mirroring), be aware that it is *not* a backup solution. RAID 1 uses two or more drives, each a duplicate of the others, to provide redundancy, not backup. It's used in situations (almost always within corporations, not in homes) where any downtown can't be tolerated, because the way it works is that if one drive fails the other takes over seamlessly. correct, although it's sometimes used in homes too. the other issue is that the reliability of modern drives virtually guarantees a failure on rebuild, particularly with raid 5. |
#52
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A simple way to transfer photos from your phone to Windows without installing anything on either
Ken Blake wrote:
"Why RAID is (usually) a Terrible Idea" http://www.pugetsystems.com/articles?&id=29 Yikes. I only googled and saw that there were a bunch of decisions to be made. May I presume to ask if "any" RAID method is useful in the home environment, where all you really care about is safety of your data? In my case, I don't even need one Terabyte disk, but now I have two. My other option is to make one disk a Linux disk and the other a Windows disk, where I can skip the whole GRUB mess since the HP Pavilion will boot off of any disk you tell it to at startup. |
#53
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A simple way to transfer photos from your phone to Windows without installing anything on either
In article , ultred ragnusen
wrote: "Why RAID is (usually) a Terrible Idea" http://www.pugetsystems.com/articles?&id=29 Yikes. I only googled and saw that there were a bunch of decisions to be made. that's an *extremely* outdated article that doesn't really say much, and there aren't very many decisions to make, other than the variant of raid to use, which depends on what you want out of it. May I presume to ask if "any" RAID method is useful in the home environment, where all you really care about is safety of your data? very much so, except that it's *not* a backup. |
#54
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A simple way to transfer photos from your phone to Windows withoutinstalling anything on either
nospam wrote:
In article , Ken Blake wrote: I've bought a new terabyte disk, and now have two terabyte disks side by side (which I might RAID once I clean them out - but I never did RAID before and googling finds that there are a LOT of up-front decisions to make). If you mean RAID 0 (striping), although it sounds like it should speed up disk access, my experience is that it doesn't. then you did something wrong, perhaps using a ****ty raid controller or it was bottlenecked with a slow link, such as usb 2. raid 0 definitely speeds things up, but doubles the risk of failure. With an Areca card and multiple HDD disks in Raid0, you can hit 2GB/sec sustained. The limitation on cards like that, was the onboard processor. The clock rate on the processor was rising with time. (At one time, the RAID0 was only 800MB/sec or so.) The cards handle RAID5 (which needs XOR) as well as RAID0 (which doesn't need XOR), and the processor on the card probably isn't adding a lot of value when running RAID0. But Areca is pretty happy to have you buy the card anyway, and the card supports RAID0 for the "racing crowd". The largest card might have had 24 SATA connectors on it. Even a single NVMe Flash storage product today can hit I/O rates like that, and with a much cheaper infrastructure cost. The Areca cards, the really big ones, were $1000 each. Whereas regular people can afford to buy NVMe products (suitable for scratch disks say). The NVMe wouldn't be a particularly good format for archival storage (your finished product), but might be good to make your movie editor go fast. I still haven't figured out what technical endeavor NVMe was invented for, and the speed isn't always well matched by the rest of the computer. (Lots of stuff you do, won't be saturating your NVMe. For example, the CRC32 hash program I use as a speed benchmark, only hits 1.3-1.5GB/sec, when an NVMe can do 2.5GB/sec. And I can't think of too many other programs that work that fast. Many other programs are happy to putter along at 300MB/sec. If you're not a very good programmer, you should be able to hit 300MB/sec. Hitting the higher rates takes work.) Paul |
#55
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A simple way to transfer photos from your phone to Windows withoutinstalling anything on either
ultred ragnusen wrote:
Ken Blake wrote: "Why RAID is (usually) a Terrible Idea" http://www.pugetsystems.com/articles?&id=29 Yikes. I only googled and saw that there were a bunch of decisions to be made. May I presume to ask if "any" RAID method is useful in the home environment, where all you really care about is safety of your data? In my case, I don't even need one Terabyte disk, but now I have two. My other option is to make one disk a Linux disk and the other a Windows disk, where I can skip the whole GRUB mess since the HP Pavilion will boot off of any disk you tell it to at startup. This is like asking whether it's a good idea to keep alligators in an aquarium tank. No, it's not a good idea. Yes, with planning, and practice in terms of what to do if things go wrong, you could do it. People keep snakes at home. At least, until in one case, a rather large snake got loose and suffocated two kids by strangulation in an adjacent apartment. If you're going to use RAID, you practice on an empty array, you practice "fire drills". What to do if it says "degraded". What to do if it says "failed", because the SATA connectors fell off. (In some cases, you can recover from that.) Most people who use RAID without reading the manual, they usually get a "scary shock" some day, and the people out there who panic easily, they're not candidates for RAID. You should back up your RAID, to an external disk. Just like you would with a single drive. Now, how much benefit does RAID provide, if you still have to make backups ? Some people have the funny idea that a RAID1 mirror is a backup. When it isn't. As long as you understand *why* you've selected a particular RAID config, you're going to be fine. If you want to construct a huge RAID0 scratch array, for some weird "raw" video format, that's perfectly fine. Since you know it's a scratch disk, if it dies, you only lose todays edits. Your archival movie content is on another, larger backup drive. There are also people, who run 16TB arrays full of ripped movie content, and with *no backups*. They can't afford backup drives. They could only afford the drives for the array. And that's their decision. They realize if the array fails, they're going to have to rip from source DVDs all over again, which could involve a lot of hours of work. As long as they know this will (eventually) happen, why not let them use RAID ? All it would take, is one power supply failure (overvolting) to burn the entire array. You can explain it to them, and they absorb the info and accept the risk. Paul |
#56
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A simple way to transfer photos from your phone to Windows without installing anything on either
In article , Paul
wrote: With an Areca card and multiple HDD disks in Raid0, you can hit 2GB/sec sustained. that's not particularly good, particularly since single ssds are faster. The cards handle RAID5 (which needs XOR) as well as RAID0 raid 5 is dangerous with high capacity drives. do not use. I still haven't figured out what technical endeavor NVMe was invented for, because it isn't bottlenecked by sata. and the speed isn't always well matched by the rest of the computer. then the rest of the computer isn't very good. |
#57
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A simple way to transfer photos from your phone to Windowswithout installing anything on either
On 2/26/2018 10:46 PM, ultred ragnusen wrote:
Mike S wrote: Apologies, I didn't read that you'd gone through all of that. Good luck. No problem. I appreciate the help, and the tribal record will show others how to recover from a bricked MS Windows 10 Pro update. Basically, you must first try all the viable options in the Windows recovery console using the original HDD. http://wetakepic.com/images/2018/02/...tore_gui_1.jpg Then you do all that again, using the absolute latest DVD ISO you can find, and, if you can find the same DVD ISO as the OS that was bricked, you do it a third time. http://wetakepic.com/images/2018/02/...dvd_repair.jpg That's all that the Microsoft Technical Support people will do, so then you bring it down to the local Microsoft Retail Store for them to try to fix. http://wetakepic.com/images/2018/02/...il_store_6.jpg You leave it with them for a few days, where they will try to recover the OS but if they can't they'll be glad to recover your data (which I didn't have them do because I backed it up with Knoppix ahead of time). http://wetakepic.com/images/2018/02/...il_store_7.jpg They will back up your data to their servers or to any drive you give them, if you want them to, but I can't imagine that they could /find/ your data, so I'm sure if you trust them, you'll lose a lot. http://wetakepic.com/images/2018/02/...il_store_1.jpg Anyway, they will fail but when I asked them what they did, they told me they first ran diagnostics, then they tried the recovery console of the boot drive, then the recovery console of the latest Windows Creator edition, and then the recovery console of an older version of Windows 10 and then they ran bcdedit to try to fix the boot record. It all failed but they said there's nothing wrong with the HDD or RAM or motherboard so I picked up my desktop today and am using it now after stopping off at Fryes to buy an SATA III cable and a molex-to-SATA adapter for the power. http://wetakepic.com/images/2018/02/...a_cables_1.jpg I had to simply move the SATA position 1 on the motherboard to the boot drive, leaving SATA 2 on the motherboard connected to the DVD disc drive, and then put the new SATAIII cable on SATA position 3 on the motherboard to mount the old HDD, and everything booted up fine. http://wetakepic.com/images/2018/02/...e_system_2.jpg I can "see" the old HDD, plus some debugging files the Microsoft store geniuses left behind. http://wetakepic.com/images/2018/02/...ystem8f091.jpg Where the issue is really closed except for me to try to write up the saga so that the Windows tribal knowledge is updated with the lessons learned. Basically, some of the lessons learned is: 1. Windows 10 Update bricks a lot of systems (at least one a day is handled by the Microsoft retail store) 2. The solution first is to try every viable option in the recovery console, and then try it with a new Windows 10 ISO and then with an old Windows 10 ISO. 3. If that fails, then try to recover the boot records with bcdedit. When/if that fails, you simply start over after backing up your data, where you "should" be able to mount the HDD (I was able to) to save your data with testdisk or knoppix or ddrescue or PhotoRec or Recuva, etc. http://wetakepic.com/images/2018/02/...t_device_1.jpg In my case, it mounted just fine - although Knoppix gave some weird errors but I'm not too worried because after buying SATA and power cables, I now have two terabyte HDDs in my laptop. http://wetakepic.com/images/2018/02/...t_device_2.jpg Your information is good. Years ago I learned the hard way to keep all my data on a portable HDD, and back up regularly. To change the topic slightly: It seems to me that the quality of service at the Windows store is a few notches below what it was abut a year ago. Is it only my local stores, or have others noticed th4e same thing. I am talking about the the stores in Roosevelt Field, and Walt Whitman. Last week I had an issue, with the machine running slow. The store wanted me to leave the machine so they could run tests. I took it to a local guy, the issue was a virus, that my AV didn't pick up. It now works fine. -- PeterN |
#58
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A simple way to transfer photos from your phone to Windows without installing anything on either
On Tue, 27 Feb 2018 16:27:28 -0800, ultred ragnusen
wrote: Ken Blake wrote: "Why RAID is (usually) a Terrible Idea" http://www.pugetsystems.com/articles?&id=29 Yikes. I only googled and saw that there were a bunch of decisions to be made. May I presume to ask if "any" RAID method is useful in the home environment, where all you really care about is safety of your data? Not as far as I'm concerned. You get safety through backup.\ |
#59
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A simple way to transfer photos from your phone to Windows without installing anything on either
Paul wrote:
how much benefit does RAID provide, if you still have to make backups ? Some people have the funny idea that a RAID1 mirror is a backup. When it isn't. Oh... sheepish look on my face ... yeah ... who would have a funny idea that RAID is for backups ... not me (anymore anyway). OK. So I won't bother with RAID. I will just make the new disk a Linux disk, and dispense with grub to use this plan of action (after I back up the data on the old disk). 1. I'll keep Windows on one HDD and put Linux on the other HDD. 2. I'll connect one of those HDDs to SATA port #1 on the motherboard. 3. Whatever HDD is connected to that port will always be the boot drive. --- A. If I press escape during startup, I can select the other boot drive. B. If I find myself doing that a lot, I'll swap SATA cables on the MB. That's the simplest I think, and it doesn't require grub. |
#60
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A simple way to transfer photos from your phone to Windows without installing anything on either
Ken Blake wrote:
May I presume to ask if "any" RAID method is useful in the home environment, where all you really care about is safety of your data? Not as far as I'm concerned. You get safety through backup.\ I see that now, thanks. The biggest problem with backup is that I have been burned by backing up to HDD, which are sort of like having a battery backup to a battery, where both suffer the same failings under the same conditions. So I like to backup to DVD, which has the main problem of data being larger than 4.7 GB in toto. So the way I'll get around that will be to create a bunch of 4,482,269 kilobyte size-limited NTFS folders (using Veracrypt). Once any of those folders gets filled with data, I'll burn it and move on to the next folder (which keeps the data from growing too large for backup). That's a KISS system that is as simple as possible given that I have no desire for HDD backup because external HDDs suffer from even more problems than do the internal HDDs. I guess when SSDs are cheaper than DVD storage, they might be the next way though, as long as they don't have proprietary power supplies because I have some old HDDs that use proprietary cables which means they're useless now, ten years later, when the power supply cable is lost or broken. |
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