Dell r720 server vdi sm825
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Some larger drives exist, like the Samsung 860 EVO 4TB, but bang-for-the-buck doesn’t quite match the 1TB-class yet.
![dell r720 server vdi sm825 dell r720 server vdi sm825](https://www.servethehome.com/wp-content/uploads/2021/01/Dell-EMC-PowerEdge-R7525-Rear-IO.jpg)
Quantity is important here since affordable SSDs tend to be relatively small – 1TB or less. The R720 lets us use a big stack of 2.5″ solid state drives with two RAID controllers for processing data. I’m not against shared storage – I love it – but when I’m dealing with large batch jobs, a limited budget, and no clustering requirement, it’s tough to beat local SSDs. It’s my favorite 2-processor SQL Server box at the moment. The Dell R720 is a 2-processor, 2-rack-unit server with room for 16 2.5″ drives across the front of the server, and two RAID controllers. What We Designed: Dell R720 with Local SSDs In this move, we were able to free up VMware licensing for other guests, too. Buying a server was a big deal – we only had one shot to buy a server and get it right the first time.
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They weren’t going to pay a lot for this muffler server. They’re a small company with no full time DBA and no glut of servers laying around.
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They wanted to put the pedal to the metal and make an order-of-magnitude improvement in their processing speeds with as few code changes as possible. Slow performance was not acceptable during normal production. This meant we could avoid the complexity of a failover cluster and shared storage. In the event of an outage, they didn’t mind manually failing over to a secondary server. The server was important, but not mission-critical. In the event of a failure, 15-30 minutes of downtime were acceptable. In practice, there are some situations – like this one – where it doesn’t make sense. Theoretically, virtualization makes for easier high availability and disaster recovery. Why We Switched from VMware to Bare Metal Both of those suggestions were a little controversial at the client, but the results were amazing. We recommended two things: first, switch to a standalone bare metal SQL Server (instead of a virtual machine), and second, switch to cheap commodity-grade local solid state storage. We could put some more memory in it to cache more data, preventing the read problem, but we would still get bottlenecked trying to write lots of data quickly to the shared storage. They were using a virtual server backed by an iSCSI SAN, and they were getting bottlenecked on reads and writes. They were frustrated with slow performance on the batch jobs, and after we performed our SQL Critical Care® with ’em, it was really clear that their hardware was the bottleneck. We’ve got a client that does big batch jobs every day, loading hundreds of gigabytes of data or more in short bursts.