On 3 January 2014 01:53, Stan Hoeppner [off-list ref] wrote:

Until someone demonstrates otherwise I will continue to state that 4K
native drives are still not on the open market.  And the reason for this
is quite logical if given a moment of thought.

Advanced Format 512e drives, drives with 4K native sectors but 512B
sectors presented to the host, fully accomplished the goal of the
spinning disk drive manufacturers.  That goal was simply to pack more
data per platter, on average about 11% more, by reducing the amount of
bits consumed for ECC.  I.e. they can sell a lager capacity drive using
the same hardware as a native 512 byte/sector drive, or with some drive
capacities, reduce the number of platters while maintaining the same
capacity, thus reducing component and production cost, and hopefully
retail price.

The physical sector size presented to the host is irrelevant to the
drive manufacturers, given the singular goal above.  Switching to a
native 4K sector does not benefit the manufacturers.  At the current
time it actually will cause them tremendous problems.

If they were to put 4K native drives on the market today, many millions
of Windows XP users would buy the drives, ignoring, or simply not
reading far enough to find the "4K native" warnings.  They then return
the drives when they don't work, causing great ill will, bad reviews
tarnishing manufacturers' reputations, and decreasing repeat business.
Thus native 4K drives will not be on the open market until the
manufacturers are comfortable that most legacy machines have been
retired, eliminating the possibility of the scenario above.

I'm confused how Windows XP is relevant to the latest top-grade server
hard-drives. And vice versa =)

I would have thought it's more likely for Windows XP users not to buy
hardware components, given that clearly those users are not upgrade
savy in any shape or form.
And even if one would buy a 4k native drive, i would have thought
there'd be other obstacles in trying it out e.g. not having a SATA
port =) considering it was created two years after Windows XP =) or
since a 4k native drive is likely to be 2TB+ in size, GPT support is
required to address the whole drive...

The target market of 4k native drives at the moment is not consumer
market, where SSDs are dominating as "premium" components.
Instead the target market for 4k native drives is server / enterprise
with never-decreasing storage requirements.

FYI here is Microsoft policy with respect to native 4k support matrix:
http://support.microsoft.com/kb/2510009

The first units of native 4K drives will be, or possibly already have
been, to OEMs who exercise control over which systems and disk arrays in
which the drives will be installed.  This prevents such a problem in the
enterprise space, as purchasers typically rely on their vendors to do
compatibility matching.  Enterprise OEMs have long maintained such
product compatibility databases.

Most Segate/Baracuda units of capacities close to 1TB and higher are
4k native. And since ~2010-2012 there has been an ever increasing
amount of request for support of native 4k in linux installers which
is as good indication of the uptake as it gets.

I guess eventually it will also tickle down to more conventional
hardware setups.

-- 
Regards,

Dimitri.