IO

Solid State Storage: Enterprise State Of Affairs

Here In A Flash!

Its been a crazy last few years in the flash storage space. Things really started taking off around 2006 when NAND flash and moores law got together. in 2010 it was clear that flash storage was going to be a major part of your storage makeup in the future. It may not be NAND flash specifically though. It will be some kind of memory and not spinning disks.

Breaking The Cost Barrier.

For the last few years, I’ve always told people to price out on the cost of IO not the cost of storage. Buying flash storage was mainly a niche product solving a niche problem like to speed up More >

The Fundamentals of Storage Systems – Shared Consolidated Storage Systems

Shared Consolidated Storage Systems – A Brief History

Hey, “Shared Consolidated Storage Systems” did you just make that up? Why yes, yes I did.

For as long as we have had computers there has been a need to store and retrieve data. We have covered the basics of hard disks, RAID and solid state storage. We have looked at all of this through the aspect of being directly attached to a single server. It’s time we expand to attaching storage pools to servers via some kind of network. The reason I chose to say shared and consolidated storage instead of just SAN or Storage Area Network was to help More >

Speaking at PASS Summit 2012

It’s Not A Repeat

Speaking at the PASS Summit last year was one of the highlights of my career. I had a single regular session initially and picked up an additional session due to a drop in the schedule. Both talks were fun and I got some solid feedback.

The Boy Did Good

I won’t say great, there were some awesome sessions last year. I did do well enough to get an invite to submit for all the “invite only sessions”. I was stunned. I don’t have any material put together for a half day or a full day session yet and the window to submit sessions was a lot smaller this year. But I do have three More >

Pliant Technology, Enterprise Flash Drives For Your SQL Server: Part 2

Adding In Others For Contrast

In our first part we introduced Pliant and the LS 300 drive. In part 2 we get down to the details. To give a better idea where you stand with the setup described last time I’m throwing in two other storage setups. A RAID 10 array made up of 12 500GB 7200 RPM drives attached via SATA II controllers In a RAID 0 configuration I was able to get 800MB/sec in sequential throughput so it isn’t horrible, just not “enterprise” worthy. A Patriot Torqx 128GB based on Indilinx Bigfoot SSD controller, not the greatest SSD on the consumer market but Indilinx was the king of More >

Understanding Benchmarks

That Means What? Vizzini: HE DIDN’T FALL? INCONCEIVABLE. Inigo Montoya: You keep using that word. I do not think it means what you think it means. - Princess Bride

If you are like me, you are constantly reading up on the latest hardware. Each site has it’s own spin on what makes up its review. All of them use some kind of synthetic benchmarking software. Some don’t rely to heavily on them because they can show the real world performance using playback tools. This method is used heavily on gaming hardware sites like [H]ard|OCP where they decided long ago that using purely synthetic benchmarks More >

SQLSaturday #63, Great Event!

So,

I actually had a early morning sessions and gave my Solid State Storage talk and had a great time. The audience was awesome asked very smart questions and I didn’t run over time. The guys and gals here in Dallas have put on another great event and it isn’t even lunch time yet!

As promised here is the slide deck from todays session. As always if you have any questions please drop me a line.

Solid State Storage Deep Dive

Changing Directions

I See Dead Tech….

Knowing when a technology is dying is always a good skill to have. Like most of my generation we weren’t the first on the computer scene but lived through several of it’s more painful transitions. As a college student I was forced to learn antiquated technologies and languages. I had to take a semester of COBOL. I also had to take two years of assembler for the IBM 390 mainframe and another year of assembler for the x86 focused on the i386 when the Pentium was already on the market. Again and again I’ve been forced to invest time in dying technologies. Well not any More >

Fast File Copy With Managed Code: UBCopy update!

If you have been following my trials with working with C# and files you know it hasn’t been a bed of roses. I ran into a roadblock when I was trying to build a high performance file copy tool in the CLR. I eventually found a solution. It works but it isn’t very clean. So, I did a little more work, removed a broken bit and simplified another bit to make it a little more stable. I’m not done yet. I know there are a couple of places I can clean the code up a bit more and a way to speed things up a bit more at the cost of using more memory, but that is for another blog post.

Logging, to the More >

Fundamentals of Storage Systems, IO Latency and SQL Server

A Thousand Men Marching Still Only March As Fast As One Man.

la·ten·cy - Computers . the time required to locate the first bit or character in a storage location, expressed as access timeminus word time.

Often when talking to people about performance they get rapped around the MB/Sec number and ignore a critical factor, latency. SQL Server is one of those few applications that is very sensitive to disk and network latency. Latency is what the end user sees. If your SQL Server is waiting around for disk or network they will start to complain. In an OLTP environment SQL Server accesses data on More >

Moore’s Law May Be The Death of NAND Flash

"It ain’t what you don’t know that gets you into trouble. It’s what you know for sure that just ain’t so." -  Mark Twain

I try and keep this quote in my mind whenever I’m teaching about new technologies. You often hear the same things parroted over and over again long after they quit being true. This problem is compounded by fast moving technologies like NAND Flash.

If you have read my previous posts about Flash memory you are already aware of NAND flash endurance and reliability. Just like CPU’s manufacturing processes flash receive boost in capacity as you decrease the size of the More >

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