[mythtvnz] SSD versus rotational HD pricing

[Daniel Giddens]

I read many horror stories on the older and cheaper  SSD drives much
like you describe ... original post again ... be careful what model you
buy ... the latest X25M series Intels do not have any of the longevity
issues, performance degrading issue like you describe according to the
articles..... guess I will find out with time.

For the record ... again .....  I agree the are not for back end
storage, not big enough and to expensive for TB's of space .... they
make excellent system drives.


On Tue, 2010-04-20 at 15:53 +1200, Solor Vox wrote:

> Feel I should chime in here.  
> 
> I've got some insight here since I've got dual SSD Samsung in a RAID-0
> on one of my systems.  I've been using it for 1 1/2 years now so I can
> comment on a few things about them.
> 
> 1) They are fantastic for reads 150MB/s, 0.3ms access times, no
> defrags, etc.
> 2) Their performance (read and write) degrades over time
> 3) Their space degrades over time
> 
> That said, my write is horrible now.  Often times slower then a single
> normal HD.  This is due to a few factors such as not having support
> for TRIM and overall design of flash drives in my case.  As the drives
> get older, they start to wear out the flash blocks.  Even with
> "wear-leveling", these blocks get marked as bad and the drive's space
> decreases.  Cheaper/older SSD that didn't support TRIM command is even
> worse.  So making sure both your drive and OS/filesystem support TRIM
> is key.  And it's also important to point out just like HD, not all
> are created equal.  Intel's X25-E are crazy fast, but some cheap
> models like the X25-M or -V are much different.  Many good (read more
> expensive) SSD have reserved space to offset the performance and space
> limitation.  
> 
> As much as people debate it, cost drives sales.  I just got some 1.5TB
> disks for $189 each.  In a RAID setup, they offer much more speed than
> is needed for doing multiple HD streams.  Sure SSD would be nice, but
> why waste money if standard drives can meet your needs and more space?
> 
> If you haven't seen this, might be a reason why...
> http://hardware.slashdot.org/story/10/04/19/1544256/Why-Arent-SSD-Prices-Going-Down
> 
> I agree they are great, but they are not the end all of storage
> solutions either.
> 
> Cheers
> sV
> 
> 
> On 20 April 2010 15:26, Daniel Giddens <daniel at acsdata.co.nz> wrote:
> 
>         The Point I was originally making is that using these drives
>         are mind blowing. The speed of boot, loading applications,
>         multitasking (unraring 3 rars at same time with no performance
>         hit etc etc) That is why I bought them and at sub $300 they
>         are worth it. I wouldn't spend more than that regardless of
>         capacity or technology.
>         
>         WHEN! the 1TB drives drop below $300 then I will upgrade my
>         back end storage as well. But right now they have and will
>         continue to be my main boot drives and application drives due
>         to performance and nothing to do with price.
>         
>         Steve have you used and SSD ?? Actually anyone commenting on
>         here have you had the pleasure?? ..... We run Myth ... we
>         aren't normal people, performance and doing crazy off the wall
>         things with technology is why we are here ... if it was price
>         then we would by MySky or something similar boring and broken
>         heh :)
>         
>         All I was trying to say was using SSD's for the first time was
>         mind blowing ... it reminded me of the first voodoo graphics
>         card, doom, 720p/1080p, all things that changed my 30 plus
>         years in computing. whether it was waiting for a spectrum tape
>         to load or windows to boot 32 seconds now reduced to 10 ... we
>         have been stuck at 60MB/s for years and now finally we can
>         have 300+MB/s with multiple threads .... no more
>         defragging!!!! and way more.... and sub $300 for usable
>         space. ..... if you haven't tried them all I am saying is you
>         should before you fall into the $$/MB argument for not as it
>         nothing to do with $$ its all about mind blowing new
>         technology at a sub $300 price.
>         
>         I feel sorry for anyone that waits 2 years or even 6 months
>         before they discover what an SSD drive does technology wise
>         over a standard mechanical drive.
>         
>         
>         
>         
>         
>         
> 
> 
> 
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