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adriverhoef
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The Netherlands
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Re: Solid State Drives

If a usb thumb drive fails simply throw it away

Or — at least — try to recycle. The world would be a better place.
[Jan 25, 2017 11:34:01 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Former Member
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Re: Solid State Drives

Eliminate sandisk from that list. Go for either crucial/micron or samsung. I have reasons:

3 years ago this month I purchased a crucial m500 for my computer and have mainly been crunching cep2, until this hiatus, but I was able to go through 67% of my ssd's life with well over 100TB written to the drive. That's about 2% every month.

It was actually much worse than that makes it out to sound. I found out about crucial's momentum cache that caches most I/O work to ram about 10 months ago. Since I found it the drives life had only decreased a full 1%.

For samsung and crucial there is a tool that helps significantly, RAPID cache for samsung and Momentum cache for crucial/micron.

about 3 months ago I moved my m500 120gb to my 2009 linux laptop to continue FAH there and got an mx300 and a 750evo, both 500gb, for my desktop and new laptop, respectively. All are crunching currently and I enabled the rapid and momentum cache on both drives. Now a few months in and they are both under 1TB written and have 100% health remaining.

Linux can't make use of crucial momentum cache, not sure about samsung drives. So my m500 will be on its way out in the near-ish future. It should still have a couple years left since the laptop is 2 threads instead of 8 threads and won't be doing cep2 when they start rolling out again.

TL;DR

Only get an ssd for a crunching rig if you can enable some form of ram caching software. In my experience it does worlds of good for the health of your drive.
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Sgt.Joe
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Re: Solid State Drives

If a usb thumb drive fails simply throw it away

I have a system (Dell 2950) running Linux with 8 cores (Dual Intel(R) Xeon(R) CPU E5320 @ 1.86GHz) which has been running entirely on a 16gb Sandisk thumb drive - operating system and everything else since 5-19-2015. For many months it ran exclusively MCM1 and when FAH2 restarted it has run that since. I don't know how long it will last, but for $5.99 US I can get another one. The other nice thing is I am not using any electricity for a spinning hard drive. I have to thank widdershins for letting me know this was possible.
Cheers
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Sgt. Joe
*Minnesota Crunchers*
[Feb 6, 2017 12:00:52 AM]   Link   Report threatening or abusive post: please login first  Go to top 
ThreadRipper
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Re: Solid State Drives

You could buy an SSD and then create a RAM disk, placing the BOINC data directory there so that writes are not wearing out the SSD. If you don't crunch CEP2, at the moment you should not need a very large RAM Disk. If your PC loses power though you will lose all data on the RAM Disk, so RAM Disk software usually have a feature to write back to disk with some interval (say, once a day or so).
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[Feb 12, 2017 1:36:27 AM]   Link   Report threatening or abusive post: please login first  Go to top 
SiKTheGreatOne
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Re: Solid State Drives

If a usb thumb drive fails simply throw it away

I have a system (Dell 2950) running Linux with 8 cores (Dual Intel(R) Xeon(R) CPU E5320 @ 1.86GHz) which has been running entirely on a 16gb Sandisk thumb drive - operating system and everything else since 5-19-2015. For many months it ran exclusively MCM1 and when FAH2 restarted it has run that since. I don't know how long it will last, but for $5.99 US I can get another one. The other nice thing is I am not using any electricity for a spinning hard drive. I have to thank widdershins for letting me know this was possible.
Cheers


Did you do anything else besides installing on the USB drive, like setting up a RAM disk? I was going to try this out with Linux Mint - is the proper method to create one live USB and install to a second one?
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[Feb 19, 2017 5:09:14 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Jim1348
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Re: Solid State Drives

I now buy only Samsung 3D drives (850 EVO or 850 Pro). I have had two Crucial MX 100s and two Crucial MX 200s fail, though I am still using a third MX 200 as a video recording drive. But their designs are just not reliable enough for me.

And for high write rates, I often place the BOINC data folder on a ramdisk; Primo Ramdisk Pro is the best, but Dataram works and costs less. However, it may be easier to use a write-cache; PrimoCache works well for me, and if you set the write-delay to something like a few minutes (I often use a few hours), it will save your SSD. But the only project here that needs it is CEP2, and that has been missing in action so long that I doubt it will return. The only time I need write protection now is for the CPDN project.
[Feb 21, 2017 2:31:49 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Sgt.Joe
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Re: Solid State Drives

If a usb thumb drive fails simply throw it away

I have a system (Dell 2950) running Linux with 8 cores (Dual Intel(R) Xeon(R) CPU E5320 @ 1.86GHz) which has been running entirely on a 16gb Sandisk thumb drive - operating system and everything else since 5-19-2015. For many months it ran exclusively MCM1 and when FAH2 restarted it has run that since. I don't know how long it will last, but for $5.99 US I can get another one. The other nice thing is I am not using any electricity for a spinning hard drive. I have to thank widdershins for letting me know this was possible.
Cheers


Did you do anything else besides installing on the USB drive, like setting up a RAM disk? I was going to try this out with Linux Mint - is the proper method to create one live USB and install to a second one?

I have no RAM disk. I simply used Pendrive to create a bootable USB with Linux mint, plugged it in and booted. From then on it was just like a normal install. There is only one USB, not two.
Cheers
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Sgt. Joe
*Minnesota Crunchers*
[Feb 21, 2017 3:54:39 AM]   Link   Report threatening or abusive post: please login first  Go to top 
SiKTheGreatOne
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Re: Solid State Drives


I have no RAM disk. I simply used Pendrive to create a bootable USB with Linux mint, plugged it in and booted. From then on it was just like a normal install. There is only one USB, not two.
Cheers


I ended up using a bootable USB to create a permanent installation on a second USB. I made sure to use no swap space in hopes of extending the life of the USB. So far, everything is working well.
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[Mar 3, 2017 6:25:16 PM]   Link   Report threatening or abusive post: please login first  Go to top 
sonic79
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Re: Solid State Drives

I have a Samsung 850 Evo2 M2 and it flies! I've been using it for a year and a half and tests indicate it still has 98% life span.
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[Mar 7, 2017 3:43:10 PM]   Link   Report threatening or abusive post: please login first  Go to top 
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