Tag: 夜上海论坛TT

New Dell EMC Ready Solution Powers SQL Server, the Complete Performance Platform for Your Databases

first_imgWorking on the new Dell EMC Ready Solution for SQL Server was like going from 0 to 60 mph in under 3 seconds. The exhilaration of being pushed into the seat as the road roars past in a blur is absolute fun. That’s what the combination of Dell EMC PowerEdge R840 servers and the new Dell EMC XtremIO X2 storage array did for us in our recent tests.The classic challenge with most database infrastructures is diminishing performance over time. To use an analogy, it’s like gradually increasing the load a supercar must pull until its 0-to-60 time just isn’t impressive anymore. In the case of databases, the load is input/output operations per second (IOPS). As IOPS increase, response times can slow and database performance suffers. What is interesting is how this performance problem happens over time. As more databases are gradually added to an infrastructure, response times slow by a fraction at a time. These incremental hits on performance can condition application users to accept slower performance—until one day someone says, “Performance was good two years ago but today it’s slow.”When reading about supercars, we usually learn about their 0-to-60 mph time and their top speed. While the top speed is interesting, how many supercars have you seen race by at 200+ mph? Top speeds apply to databases too. Perhaps you have read a third-party study that devoted a massive hardware infrastructure to one database, thereby showing big performance numbers. If only we had the budget to do that for all our databases, right? Top speeds are fun, but scalability is more realistic as most infrastructures will be required to support multiple databases.Dell EMC Labs took the performance scalability approach in testing the new SQL Server architecture. Our goals were aggressive: Run 8 virtualized databases per server for a total of 16 databases running in parallel, with a focus on generating significant load while maintaining fast response times. To make the scalability tests more interesting, 8 virtualized databases used Windows Server Datacenter on one server and the other 8 databases used Red Hat Enterprise Linux on another server. Figure 1 shows the two PowerEdge R840 servers and the 8-to-1 consolidation ratio (on each server) achieved in the tests.Figure 1: PowerEdge R840 serversQuest Benchmark Factory was used to create the same TPC-E OLTP workload across all 16 virtualized databases. On the storage side, XtremIO X2 was used to accelerate all database I/O. The XtremIO X2 configuration included two X-Brick modules, each with 36 flash drives for a total of 72. According to the XtremIO X2 specification sheet, a 72-drive configuration can achieve 220,000 IOPS at .5 milliseconds (ms) of latency with a mixture of 70 percent reads and 30 percent writes using 8K blocks. Figure 2 shows the two X-Brick configuration of the X2 array with some of key features that make the all-flash system ideal for SQL Server databases.Figure 2: XtremIO X2Before we review the performance findings, let’s talk about IOPS and latency. IOPS is a measure that defines the load on a storage system. This measurement has greater context if we understand the maximum recommended IOPS for a storage system for a specific configuration. For example, 16 databases running in parallel don’t represent a significant load if they are only generating 20,000 IOPS. However, if the same databases generated 200,000 IOPS, as they did on the XtremIO X2 array that we used in our tests, then that’s a significant workload. Thus, IOPS are important in understanding the load on a storage system.Response time and latency are used interchangeably in this blog and refer to the amount of time used to respond to a request to read or write data. Latency is our 0-to-60 metric that tells us how fast the storage system responds to a request. Just like with supercars, the lower the time, the faster the car and the storage system. Our goal was to determine if average read and write latencies remained under .5 ms.Looking at IOPS and latency together brings us to our overall test objective. Can this SQL Server solution remain fast (low latency) under a heavy IOPS load? To answer this question is to understand if the database solution can scale. Scalability is the capability of the database infrastructure to handle increased workload with minimal impact to performance. The greater the scalability of the database solution, the more workload it can support and the greater return on investment it provides to customers. So, for our tests to be meaningful we must show a significant load; otherwise, the database system has not been challenged in terms of scalability.We broke the achievable IOPS barrier of 220,000 IOPS by more than 55,000 IOPS! In large part, the PowerEdge R840 servers enabled the SQL Server databases to really push the OLTP workload to the XtremIO X2 array. We were able to simulate overloading the system by placing a load that is greater than recommended. In one respect we were impressed that XtremIO X2 supported more than 275,000 IOPS, but then we were concerned that there might have been a trade-off with performance.The average latency for all physical reads and writes was under .5 ms. So not only did the SQL Server solution generate a large database workload, the XtremIO X2 storage system maintained consistently fast latencies throughout the tests. The test results show that this database solution was designed for performance scalability: The system maintained performance under a large workload across 16 databases. Figure 3 summarizes the test findings.Figure 3: Summary of test findingsThe capability to scale without having to invest in more infrastructure provides greater value to customers. Would I recommend pushing the new SQL Server solution past its limits like Dell EMC Labs did in testing for scalability? No. Running database tests involves achieving a steady state of performance that is uncharacteristic of real-world production databases. Production databases have peak processing times that must be planned for so that the business does not experience any performance issues. Dell EMC has SQL Server experts that can design the Ready Solution for different workloads. In my opinion, one of the key strengths of this solution is that each physical component can be sized to address database requirements. For example, the number of servers might need to be increased, but no additional investment is necessary on XtremIO X2, thus, saving the business money.If I were to address just one other topic, I would pick the space savings achieved with a 1 TB SQL Server database. In figure 4, test results show a 3.52-to-1 data reduction ratio, which translates to a 71.5 percent space savings for a 1 TB database on the XtremIO X2 array. Always-on inline data reduction saves space by writing only unique blocks and then compressing those blocks to storage. The value of inline data reduction is the resulting ability to consolidate more databases to the XtremIO X2 array.Figure 4: XtremIO X2 inline data reductionAre you interested in learning how SQL Server performed on Windows Server Datacenter edition and Red Hat Enterprise Linux Server? I recommend reading the design guide for Dell EMC XtremIO X2 with PowerEdge R840 servers. The validation and use case section of that guide takes the reader through all the performance findings. Or schedule a meeting with your local Microsoft expert at Dell EMC to explore the solution.Why Ready Solutions for Microsoft SQL?The Ready Solutions for Microsoft SQL Server team at Dell EMC is a group of SQL Server experts who are passionate about building database solutions. All of our solutions are fully integrated, validated, and tested. Figure 5 shows how we approach developing database solutions. Many of us have been on the customer or consulting side of the business, and these priorities reflect our passion to develop specialized database solutions that are faster and more reliable.Figure 5: Our database solutions development approachI hope you enjoyed this blog. If you have any questions, please contact me.Additional Resources:Microsoft SQL Server Info Hub—A list of recent Dell EMC solutions for SQL ServerDell EMC Ready Solutions for Microsoft SQL—A good resource for all Dell EMC solutions for SQL Serverlast_img read more

Read more…

GO-TIME: DCED Collaboration Saves $140,000 per Year, Reduces Local Government Paperwork

first_img January 24, 2018 GO-TIME: DCED Collaboration Saves $140,000 per Year, Reduces Local Government Paperwork Efficiency,  GO-TIME,  Government That Works,  Press Release Harrisburg, PA – A new system developed by the Department of Community and Economic Development (DCED) for the Department of the Auditor General (AG) is making it easier for municipalities to receive state aid, according to the Governor’s Office of Transformation, Innovation, Management and Efficiency (GO-TIME).“The new system allows municipalities to cut through the red tape when they apply and provides the auditor general with a faster, more streamlined process for distributing aid,” Secretary Davin said. “Governor Wolf’s GO-TIME initiative consistently encourages departments to share information and work together to solve problems, which ultimately means better customer service. The municipal reporting system in one of several new technologies that DCED is sharing with other agencies and governments to reduce duplication and provide a better return for taxpayers”Pennsylvania saves taxpayers $140,000 annually since implementing the new tool, according to the Auditor General’s Office.“Going from a paper-based to electronic filing system streamlined submissions, improved efficiencies within my department and provided better customer service for municipal staff,” said Auditor General Eugene DePasquale. “We’ve heard from municipalities about the ease of the new system which simplifies the process while cutting down on data entry errors.Under Pennsylvania law, municipalities that wish to receive state aid for pensions and volunteer firefighter funding must apply to the Pennsylvania Auditor General’s Office by March 31 each year. Prior to 2017, all forms were submitted on paper. The new system streamlines reporting for municipalities and cuts processing time for the Office of Auditor General, which administers the program. The new online process is available on DCED’s Municipal Statistics website.Last year, over 2,500 municipalities in 66 out of 67 Pennsylvania counties received over $60 million in aid for their local volunteer firefighters’ relief associations in their communities. Additionally, over 1,400 municipalities received almost $290 million for their pension plans covering police officers, paid firefighters and non-uniformed employees. A 2 percent tax on out-of-state casualty and fire insurance premiums funds the program. More information about the Municipal Pension Reporting Program is available online at the Auditor General’s website.GO-TIME is working to modernize government operations to reduce costs and improve services. GO-TIME works with agencies to identify opportunities to share resources, collaborate and engage employees in transformation. Over the past three years, state agencies have achieved over $373 million in savings while also improving efficiency and customer service as part of GO-TIME. To learn more, go to www.governor.pa.gov/go-time.center_img SHARE Email Facebook Twitterlast_img read more

Read more…

“Measure your expectations of us”- Felix Annan to Kotoko fans

first_imgAsante Kotoko goalie and captain, Felix Annan, has called on the team’s fans to be tempered in their expectations of the players as they try to make their way through the CAF Champions League and other assignments in the coming months.Kotoko made it first round of the Champions League after they beat Kano Pillars 2-0 in Kumasi on Sunday to progress 4-3 on aggregate.They will face Champions League big timers, Etoile du Sahel of Tunisia, in the next round and they will hope to make it to the group stage but Annan wants the fans to keep their cool and not to place huge pressure on the team to get the needed results in the competition.“As players, we are very ready to give 200 hundred percent but we want to tell the fans that they should limit their expectations of us. This is a new team and players are trying to gel.Their efforts are not bad at the moment. There will be improvements as we go along. We will give our best but they need to take things easy for us and keep supporting us and we will do our best for them.”Annan shared his thoughts on the victory the team got over Kano Pillars and said that it was good to see that they executed well on the day and they gave the fans a very good result.“We got the result that we wanted. We used the experience of playing in last season’s CAF Confed Cup and it was something special. We are happy to have made it through to the next round.It would have been a big blow if we had failed because of the expectations of the fans. If we did not win, we would feel as though we had not done our job. We are happy and we will try to get through to the next stage.”last_img read more

Read more…