I've had two 128g SSD's fail on my thinkpad laptop. The original failed
after about 3 years and they sent me a replacement under warranty. It
failed after about 2 years. When I looked at replacements at newegg, got a
kid on live chat that likes to build gaming PC's. He said to avoid some of
the cheapest SSD's and recommended a Samsung and a few others for
longevity. The Samsung was reasonable at the time, but I opted to go with a
1tb regular HD instead. You would think lenovo would use a better quality
ssd on a higher end business machine. The 1tb is still sitting in the box
and I've been using a livecd.
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On October 28, 2017 7:23:48 AM Gene Heskett <[email protected]> wrote:
On Saturday 28 October 2017 03:55:32 Chris Albertson wrote:
Forgot to say...
It yu want to get maximum life from an SSD. Yo need to enable its
built-in "TRIM" function. What this does is load balance the writing
over the entirety of the SSD so all the sectors (pages) get written
to. Older version of Linux don't do this automatically.. Yu would
have to have a cron script run periodically.
The file system on a hard drive tries too keep data near the outside
edge of the drive as that is there the tangental velocity of a
spinning disk is greatest and it also ties to keep the data in a
compact area (de-fragmente) For an SSD you want exactly the
opposite of this. Yu want to keep the data scattered randomly all
over the drive. It will be faster and last longer if data is sparsely
distributed. TRIM does this.
I assume this is an option to be put in /etc/fstab?
The keyword 'trim' is not mentioned in the man pages for fstab, mount, or
tune2fs. on these wheezy systems. Where can I find this?, and how is it
applied? I found something in man hdparm, but its labeled as EXTREMELY
DANGEROUS, DO NOT USE!!! So I await further instructions.
Thanks Chris.
On Sat, Oct 28, 2017 at 12:15 AM, Chris Albertson
<[email protected]> wrote:
> Building a hard drive takes some very specialized trooling and
> expensive factory so you don't see new hard drive companies
> sprouting up. But an SSD is just a standard PCB with chips soldered
> on inside a plastic box. You can almost make them in your garage
> so there are lots of companies getting into the because the cost of
> entry is very low. But they buy the same chips others use. All
> that is different is who solders them to the board.
>
> I think the Silicon Per SSD is the lowest price SSD that still has
> resopnable specs. Looked at them
>
> BTW these SSDs that have the same physical shape as a hard drive as
> just a transitional technology. They are good for upgrades old
> computers. But with new computers they eliminate the SATA-III
> interface and connect the FLASH chip directly to the PCIe bus. SATA
> has become a huge bottleneck
>
> On Fri, Oct 27, 2017 at 10:56 PM, Gene Heskett <[email protected]>
wrote:
>> Greetings;
>>
>> New stuff report.
>>
>> I just installed one of the SP 60GB drives in the G0704's Dell
>> computer. I have everything copied across, theoretically I should
>> be able to remove the 2 TB thats been in it for around 2 years as I
>> am needing a bigger drive for amanda, whose 1TB drive is at about
>> 87%.
>>
>> DF says 18% so 60GB should do ok for a while.
>>
>> Speed comparison with hdparm -tT:
>>
>> 2TB rotating drive, supposedly sata-III capable
>> dev/sda6:
>> Timing cached reads: 2456 MB in 2.00 seconds = 1228.06 MB/sec
>> Timing buffered disk reads: 292 MB in 3.01 seconds = 96.95
>> MB/sec
>>
>> 60GB SSD;
>> dev/sdb3:
>> Timing cached reads: 2484 MB in 2.00 seconds = 1242.54 MB/sec
>> Timing buffered disk reads: 642 MB in 3.00 seconds = 213.65
>> MB/sec
>>
>> While its rated sata-III, or 6GB/sec, that old Dell Optiplex 745
>> mobo obviously isn't. But its still pleasantly faster. Not too
>> shabby for a $33 drive. :) I think I'll put the 2nd one on the
>> rock64 as its lone sata socket is a sata-III capable socket. But
>> maybe its time to round up a an expander and get acquainted with
>> how they work.
>>
>> Moving the 2TB drive in here for amanda, will give me room to add
>> the machine I use to program mesa cards, and the rock64 to its
>> nightly backup schedule.
>>
>> These are Silicon Power SSD drives, never heard of them before.
>> Anybody else here have any experience with their stuff?
>>
>> Cheers, Gene Heskett
>> --
>> "There are four boxes to be used in defense of liberty:
>> soap, ballot, jury, and ammo. Please use in that order."
>> -Ed Howdershelt (Author)
>> Genes Web page <http://geneslinuxbox.net:6309/gene>
>>
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>
> --
>
> Chris Albertson
> Redondo Beach, California
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>
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