Sector/heads rather I'd meant, wrong term. Having to finagle fdisk
specifically to align to the ssd's geometry with -S -H.
I had problems with the bootsector offset stuff between ssd, ata
controllers, and installers by default until I did, having to trial and
error learn manually to get ubuntu happy and efficiently aligned
pre-install. Was not fun nor intuitive (with bugs hit), but apparently
necessary. Two devices were two different methods, same ata disk
geometry between them.
It'd be great if an installer could account for things like erase head
sizing from hdparm data to adjust fs/partitions, not sure any really do
yet, or..?
-mb
On 04/20/2013 12:53 PM, Stephen wrote:
there is no cylinder alignment really in a SSD anymore...
On Sat, Apr 20, 2013 at 12:18 PM, Michael Butash <[email protected]
<mailto:[email protected]>> wrote:
So I bought a samsung 840, I'll be using it on a single-disk system,
requiring encryption (luks), and lvm/btrfs. Might actually try
btrfs finally now, but this is for work. Just curious your opinion
about the firmware side to expect these days losing trim support
with fs layers, but relying on built-in firmware auto-leveling.
Most of what Lisa suggested to do I normally do already, I just
still do manual alignment of cylindars of the disk for flash
geometry (or plan to). Is that even needed still for non-gpt
installs (like ubuntu)?
Longevity seems almost a crapshoot with ssd's at times, so just
curious to know what enterprise storage systems use on the back end
with ssd to keep them from dying with layers of raid and such.
I did buy the samsung 840 "pro" disk, just curious what makes it so
pro vs cheaper 840 (~$50 diff). Since single disk, I'm hoping it
holds up longer.
Thanks in advance!
-mb
On 04/02/2013 02:05 PM, Alan Dayley wrote:
An SSD from a well known manufacturer will last longer and be faster
than any rotating hard drive. The controllers and firmware in
the drive
are designed to compensate for wear-out problems. Buy something from
Intel, Samsung, OCZ or STEC and you will be just fine.
(I was a firmware engineer for an SSD company for 11.9 years. I
don't
have time right now to give a detailed answer. Just trust me. ;-) )
Alan
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