EMC World 2008 Day 1 (Keynotes)

Published On: 2008-05-19By:

Here are some of the key points from the keynotes from EMC world.

Gartner says that by 2011 there will be 1337 Exabytes.

 179 Exabytes of information has been created so far this year.

In the next two years we will see a trend moving further away from using Tape for backup and recovery.  It will still be used for long term archiving, but day to day restores will come from disk.

During the raw data into useful information is becoming more and more of a challenge for IT departments and business units. 

What I’m gathering from the keynotes is that the amount of data is exploding.  I see this as a great thing for us DBAs as, the bulk of data that companies have is going to be stored within the database.  I know that the company which I work for (Awareness Technologies) creates about 110 Gigs of information per day.  Now with our products policy we keep this data for 14 days (unless the customer pays us to keep the data longer).  This means that we have about 1.5 Terabytes of information within our data center that our customers are looking at on a daily basis.  This much data, with such a high data change rate is just a crazy amount of data change.

Sites with high data change rates have specific challenges some of which I will be talking about (specifically how they relate to Microsoft SQL Server) on 6/11/2008 at 12:00 PM PST when I present a geekspeak session “geekSpeak: Spatial Data in SQL Server 2008 with Denny Cherry”.  I’ll post the link to this webcast when I get it.

Since my laptop battery is dieing I’ll have to wrap this up for now.  Check back later for more.

Denny

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EMC World 2008 Day 1 (The first post)

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While waiting for the first keynote to start I figured that this would be as good a time as any to write a quick post.

 I just got out of the first session of the morning.  I decided to catch the VMware VI3 session which went over the new features of ESX 3.5.

 It was a very good session packed with great info about the new features of VMware ESX 3.5 which came out a few months ago.

3.5 introduces the Storage Vmotion.  It’s similar to the regular Vmotion which moves VMs from one host to another, but it’s designed to move a VMs storage from one disk (LUN, array, etc) to another disk within the same host without taking the VM down.  In prior versions of VMware to move a VM from on disk to another you would need to power the machine down and then move the machine.  It can now be done as a live operation.  It does temporally double the memory and CPU requirements of the guest OS, and it is a CPU and disk intensive operation and should be done off hours, but it’s a great way to move from a full disk to an empty one.

 Another great technology which I was introduced to is the VDM or Virtual Desktop Manager.  As I understand this technology it allows you to take a single Windows XP guest OS, and allow many people to connect to it.  The VDM places a connect pool in front of the Windows XP guest OS and as people connect to it, it takes a snap of the guest OS, and lets the new user use the snap.  This allows many people to use a single Virtual Machine without increasing the amount of disk space required, and reducing the IO requirement of your Windows XP (or Vista) guests on the host.

As the Keynotes proceed I’ll try and go over what they are talking about.

Denny

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EMC World 2008 Day 0

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Today is the check-in and welcome party for EMC World.  EMC and Brocade had the Goo Goo Dolls perform at the welcome party.  The party and show were fantastic.

Funniest comment of the concert would have to be “This is the first all you can eat buffet rock show I’ve ever been to.”

[kml_flashembed movie="http://www.youtube.com/v/er3xnXS_9vs" width="425" height="350" wmode="transparent" /]

The video was taken by my wife (who also had a great time, thanks for coming with me).  What you don’t see (but you can here) is John Rzeznik talking to one of the people serving the food about 2 feet from the front of the stage.  If anyone has better shots or video please post them and links to them.

Here are some stills which my wife took. She takes all the photos. I can’t take a picture to save my life.  (Click the image to see the bigger version.)
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img_0169.jpg  img_0179.jpg  img_0201.jpg

img_0219.jpg  img_0235.jpg  img_0250.jpg

img_0293.jpg  img_0340.jpg  img_0381.jpg

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I’ll continue to post from the conference as best I can.

Denny

****UPDATE****

I’ve added another picture so the group.

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Back To Basics: Service Broker Message Types

Published On: 2008-05-15By:

The message type is the first of the service broker specific objects.  The message type defines the name of the message, and performs any validation that the service broker needs to do on the contents of the message prior to sending the message.  If the message is being sent to another database (on the same server or a different server) then the message type must exist on both databases.

Validation can be one of four options.

  1. None (My personal favorate especially for sample code)
  2. Empty
  3. Well_Formed_XML
  4. Valid_XML With Schema Collection

1 and 2 are pretty straight forward.  None = No validation is done.  Empty = The message must be empty.  Well_Formed_XML requires that the XML be a valid XML document.  The fourth option requires that not only the XML be valid, but that it fits within a pre-existing XML schema collection (an XSD which has been loaded into the SQL Server).

The syntax to create a Message Type is pretty basic.

CREATE MESSAGE TYPE [MessageTypeName]
VALIDATION = NONE

That’s it.  If you need to change the schema use the AUTHORIZATION clause to set the owner of the object.

When using the validation of NONE it is up to the receiving code or application to verify that the data within the message exists and is valid.

Denny

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