Will there ever be a HD with two SATA controllers built in?

  • Thread starter Thread starter Frodo
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Frodo

Does anyone know if any hard drive manufacturer is planning on making a SATA
HD
with two built in SATA interfaces, allowing someone to have RAID with one
hard drive?
With something like 4 platters, 2 platters for each SATA controller?
 
Frodo said:
Does anyone know if any hard drive manufacturer is planning on making a SATA HD with two built in
SATA interfaces, allowing someone to have RAID with one hard drive?
With something like 4 platters, 2 platters for each SATA controller?
Click to expand...

Pointless, check what RAID actually means.
 
Frodo said:
Does anyone know if any hard drive manufacturer is planning on making a SATA
HD
with two built in SATA interfaces, allowing someone to have RAID with one
hard drive?
With something like 4 platters, 2 platters for each SATA controller?
Click to expand...

Multi-access HDs are not new; some were available >40 years ago. But, in
addition to some technical problems, the economics of volume make standard
RAID far far cheaper than such weird widgets.

BTDTGTTS
 
Previously Frodo said:
Does anyone know if any hard drive manufacturer is planning on
making a SATA HD with two built in SATA interfaces, allowing someone
to have RAID with one hard drive? With something like 4 platters, 2
platters for each SATA controller?
Click to expand...

Now, that would be entriely stupid, since it does not help against the
most common faults. Even if somebody did this, then the RAID logic
should be inside the drive, i.e. the drive should have one
interface.

If you really want this, just use some tape to stick two drives
together....

Arno
 
Arno Wagner said:
Now, that would be entriely stupid, since it does not help against the
most common faults.
Click to expand...
Even if somebody did this, then the RAID logic should be inside the drive,
Click to expand...

Just the usual babblebot nonsense, there is no such requirement.
i.e. the drive should have one interface.
Click to expand...

So no.
 
Does anyone know if any hard drive manufacturer is planning on making a SATA
HD
with two built in SATA interfaces, allowing someone to have RAID with one
hard drive?
With something like 4 platters, 2 platters for each SATA controller?
Click to expand...

What exactly is the point?

Do you mean with 2 interfaces each one controlling their own actuator
(so 2 actuators as well) for a single disk chassis & spindle?

Do you mean 2 interfaces controlling 1 actuator? (Good luck with
that.)

http://www.storagereview.com/php/tiki/tiki-index.php?page=InternalRAID0
 
Lets say you have a hard drive with 4 platters, each SATA interface would
control two platter.
 
Frodo said:
Lets say you have a hard drive with 4 platters, each SATA interface would
control two platter.
Click to expand...

To what purpose, that merely repeats what you already said, without any expla-
nation. The only sensible application would be RAID0, which isn't really RAID.
So what if this harddrive needs only 1 or 3 platters for it's size?

Economy of (physical) size, economy of parts.
In practice all that remains will be economy of size because
economy of parts will likely loose out on economy of scale.

Of course, if it was to be an intelligent question.

They call it SAS and it is readily available (no Raid, of course). ;-)

Seems to be quite focused on minimal changes to a standard existing harddrive
rather than on combining two drives into one with only those parts used single
that wouldn't add anything useful if doubled, like motor, spindle and casing,
2 ports is debatable, can be one with a port multiplier added.
 
Previously Frodo said:
Lets say you have a hard drive with 4 platters, each SATA interface would
control two platter.
Click to expand...

Still does not make sense. The heads are all tied together.

Arno
 
To what purpose, that merely repeats what you already said, without any expla-
nation. The only sensible application would be RAID0, which isn't really RAID.
So what if this harddrive needs only 1 or 3 platters for it's size?


Economy of (physical) size, economy of parts.
In practice all that remains will be economy of size because
economy of parts will likely loose out on economy of scale.
Click to expand...

Well economy of scale is largely dependant on market acceptance
(anticipated or real) which is dictated to a large extent on
attractiveness of its benefits and other initial costs like design
complexity and reliability. On the surface this idea seems attractive
esp for notebooks, etc. In practice it is an abandoned idea.
Of course, if it was to be an intelligent question.


They call it SAS and it is readily available (no Raid, of course). ;-)
Click to expand...

SAS is readily available at a significant cost premium. SATA products
are intended for the economy or entry level market. I don't imagine
features of that level of complexity will make it's way to, or have
any place there.
 
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