[EMAIL PROTECTED] ("Jeffrey W. Baker") writes:
> I haven't tried this product, but the microbenchmarks seem truly
> slow. I think you would get a similar benefit by simply sticking a
> 1GB or 2GB DIMM -- battery-backed, of course -- in your RAID
> controller.
Well, the microbenchmarks were pretty
> you'd be much better served by
> putting a big NVRAM cache in front of a fast disk array
I agree with the point below, but I think price was the issue of the
original discussion. That said, it seems that a single high speed spindle
would give this a run for its money in both price and performan
On Tue, Jul 26, 2005 at 11:23:23AM -0700, Luke Lonergan wrote:
Yup - interesting and very niche product - it seems like it's only obvious
application is for the Postgresql WAL problem :-)
On the contrary--it's not obvious that it is an ideal fit for a WAL. A
ram disk like this is optimized for
Alex Turner wrote:
Also seems pretty silly to put it on a regular SATA connection, when
all that can manage is 150MB/sec. If you made it connection directly
to 66/64-bit PCI then it could actualy _use_ the speed of the RAM, not
to mention PCI-X.
Alex Turner
NetEconomist
Well, the whole point
Please see:
http://www.newegg.com/Product/Product.asp?Item=N82E16820145309
and
http://www.newegg.com/Product/Product.asp?Item=N82E16820145416
The price of Reg ECC is not significantly higher than regular ram at
this point. Plus if you go with super fast 2-2-2-6 then it's actualy
more than good o
Also seems pretty silly to put it on a regular SATA connection, when
all that can manage is 150MB/sec. If you made it connection directly
to 66/64-bit PCI then it could actualy _use_ the speed of the RAM, not
to mention PCI-X.
Alex Turner
NetEconomist
On 7/26/05, John A Meinel <[EMAIL PROTECTED]
Luke Lonergan wrote:
Yup - interesting and very niche product - it seems like it's only obvious
application is for the Postgresql WAL problem :-)
Well, you could do it for any journaled system (XFS, JFS, ext3, reiserfs).
But yes, it seems specifically designed for a battery backed journal.
Th
Yup - interesting and very niche product - it seems like it's only obvious
application is for the Postgresql WAL problem :-)
The real differentiator is the battery backup part. Otherwise, the
filesystem caching is more effective, so put the RAM on the motherboard.
- Luke
-
I'm a little leary as it is definitely a version 1.0 product (it is
still using an FPGA as the controller, so they were obviously pushing to
get the card into production).
Not necessarily. FPGA's have become a sensible choice now. My RME studio
soundcard uses a big FPGA.
The performance
On Jul 26, 2005, at 12:34 PM, John A Meinel wrote:
Basically, it is a PCI card, which takes standard DDR RAM, and has
a SATA port on it, so that to the system, it looks like a normal
SATA drive.
The card costs about $100-150, and you fill it with your own ram,
so for a 4GB (max size) dis
On Tue, 2005-07-26 at 11:34 -0500, John A Meinel wrote:
> I saw a review of a relatively inexpensive RAM disk over at
> anandtech.com, the Gigabyte i-RAM
> http://www.anandtech.com/storage/showdoc.aspx?i=2480
>
> Basically, it is a PCI card, which takes standard DDR RAM, and has a
> SATA port on
[EMAIL PROTECTED] (John A Meinel) writes:
> I saw a review of a relatively inexpensive RAM disk over at
> anandtech.com, the Gigabyte i-RAM
> http://www.anandtech.com/storage/showdoc.aspx?i=2480
And the review shows that it's not *all* that valuable for many of the
cases they looked at.
> Basical
I saw a review of a relatively inexpensive RAM disk over at
anandtech.com, the Gigabyte i-RAM
http://www.anandtech.com/storage/showdoc.aspx?i=2480
Basically, it is a PCI card, which takes standard DDR RAM, and has a
SATA port on it, so that to the system, it looks like a normal SATA drive.
Th
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