12 Jan
2012
12 Jan
'12
8:32 a.m.
Hi all,
I've lately heard of so-called hybrid ssd disks and was wondering if
anyone has experiences with them esp. relating to audio, but also for
general use.
While advantages (and drawbacks) of pure SSD are quite straightforward,
but the price tag is still high, I'm not totally convinced of the
advertised 'advantages' of the hybrid ones.
On the more linux side of things, one aspect which is not very clear to
me is compatibility, especially what sort of software hackery the
'adaptive' optimisations include and to which extent these are
Windows/Mac only, e.g. one of the popular brands states Linux
compatibility and in the spec. sheet "Can be used with Linux"
I was also thinking that this probably relates mostly to the laptop
universe, as I guess one could create a 'homemade' hybrid system on a
workstation with multiple drive slots by simply getting a smaller (now
reasonably affordable) SSD disk for the system and keeping a traditional
platter one for, say, storage etc.
Lorenzo.
13 Jan
13 Jan
7:30 p.m.
On 12.01.2012 10:31, Lorenzo Sutton wrote:
Hi all,
I've lately heard of so-called hybrid ssd disks and was wondering if
anyone has experiences with them esp. relating to audio, but also for
general use.
While advantages (and drawbacks) of pure SSD are quite
straightforward, but the price tag is still high, I'm not totally
convinced of the advertised 'advantages' of the hybrid ones.
On the more linux side of things, one aspect which is not very clear
to me is compatibility, especially what sort of software hackery the
'adaptive' optimisations include and to which extent these are
Windows/Mac only, e.g. one of the popular brands states Linux
compatibility and in the spec. sheet "Can be used with Linux"
Hi Lorenzo,
those devices are completely transparent to the operating system.
You're OS sees just one drive. The real magic is the algorithm inside
the disc controller which decides which block should go on the SSD. This
is implemented in the firmware of the device, it is not done via a
driver. You can expect benchmarks around 110MB(MB/s) (r/w) from such a
disk, which places the hybrid disc somewhere between the classic disc
drives and older SSDs. This goes for the price as well..
When speaking about the use of those discs in audio systems you have to
define the exact use case.. I don't think they make a lot of sense for
the classic recording application, since the the caching algorihm places
only popular blocks on the SSD. This will be useless if you're doing
recordings all the day. It might be of use if you're using a sampler and
playing the same samples a lot of times..
But you can only speculate about this case since no one knows the
caching algorithm of the disc.
Hope that helps,
Sebastian
4738
days inactive
4739
days old
linux-audio-user@lists.linuxaudio.org
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Lorenzo Sutton -
mauser＠smoors.de