Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
DMcCunney
User Rank
CEO
Re: It is rightly pitched to the servers market
DMcCunney   12/23/2013 11:34:51 AM
NO RATINGS
@Kinnar: but in case of a normal general purpose server everything goes on one location, in that case it will be required to consider the write endurance.

A normal, general purpose server has only one location?  I doubt it. 

And even if it is on the read-optimized SSD, see my comments about write limits on NAND flash.  How long do you think it's likely to take before write endurance becomes a concern?  Offhand, a rather long time.

I'd be concerned about timely updates, but that would likely be a matter of caching and asynchronous batch writes.

Kinnar
User Rank
CEO
Re: Cloud Era
Kinnar   12/23/2013 5:53:03 AM
NO RATINGS
This is a very good solution!!, but separating the write and read operations in cloud environment will be less feasible but playing with local operating systems stack it will be possible to separate the write and read locations on different hard disk drives. But this will be matter of some research and development.

 

Kinnar
User Rank
CEO
Re: It is rightly pitched to the servers market
Kinnar   12/23/2013 5:36:14 AM
NO RATINGS
But when a data is read from a server which is defined as read intensive server, it simultaneously requires to write something on the server that will be the log statistics keeping or updates of the content, yes for a database warehouse there will be different locations for storing this data, but in case of a normal general purpose server everything goes on one location, in that case it will be required to consider the write endurance.

DMcCunney
User Rank
CEO
Re: It is rightly pitched to the servers market
DMcCunney   12/22/2013 3:42:29 PM
NO RATINGS
For NAND flash, I believe the current limits are abourt 100,000 writes per cell before it goes bad.  And the controller circuitry is designed to transparently move data from failing cells, mark them bad, abd remap, so that what you see is graceful degradation as total drive capacity decreases.  In most cases, I'd expect the flash drive to be removed and replaced with a bigger, faster, better performing unit before degradation is even noticeable.  (That's 100,000 writes per cell. How long will it take for any particular cell to be written to 100,000 times?  How many cells are in a drive?  How long will it take for wear to be noticeable?  Offhand, a long time.)

Because of that, if I'm a server admin, I'm less concerned with write endurance than write speed.

Unless you are doing OLTP with lots of database updates, reading the data quickly will be far more important than writing it, so flash optimized for fast reads can be attractive.

 

z80man
User Rank
Rookie
Re: It is rightly pitched to the servers market
z80man   12/22/2013 1:46:07 PM
NO RATINGS
For read intensive operations the number of writes that will be needed would be far less that typical and the drive would probably become obsolete before reaching the point of failure. The bigger problem I can see if with the focus of read performance and possible less write performance. Performing updates to files could cause the writes to interfere with the high performance reads.

chanj0
User Rank
CEO
Cloud Era
chanj0   12/11/2013 5:45:45 PM
NO RATINGS
There is a write before there is something to read. However, no doubt, an article on the web probably are read a million time while there is only 1 write. The benefit of read fast will definitely improve user experience. What's the speed improvement vs the write penalty?

Depending on the penalty, when a web service is being development with both read and write, one of the many challenges lays on how a cloud system is designed so that read and write are going to different servers.

Kinnar
User Rank
CEO
It is rightly pitched to the servers market
Kinnar   12/11/2013 2:32:34 PM
NO RATINGS
This will be really a good storage solution for the read intensive servers, but the write endurance will be again one point for the administrators to think of before accepting the device.



Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Are Today's Designs Bound by the Constraints of Yesteryear?
Max Maxfield
21 comments
As part of my ongoing Pedagogical and Phantasmagorical Inamorata Prognostication Engine project (try saying that 10 times quickly), I'm working with Jason Dueck from Instrument Meter ...

Jolt Judges and Andrew Binstock

Jolt Awards: The Best Books
Jolt Judges and Andrew Binstock
1 Comment
As we do every year, Dr. Dobb's recognizes the best books of the last 12 months via the Jolt Awards -- our cycle of product awards given out every two months in each of six categories. No ...

Engineering Investigations

Air Conditioner Falls From Window, Still Works
Engineering Investigations
2 comments
It's autumn in New England. The leaves are turning to red, orange, and gold, my roses are in their second bloom, and it's time to remove the air conditioner from the window. On September ...

David Blaza

The Other Tesla
David Blaza
5 comments
I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...