Language Selection

English French German Italian Portuguese Spanish

Benchmarking the MD3000 powervault under linux

Filed under
Hardware

I've been spending some time benchmarking the Dell MD-3000 powervault storage array under SuSE 10.2 x86_64 linux. There isn't a lot of information out there on this unit, one of the more useful pages I found is on this blog: Performance of the MD3000 with ORION. In summary: it is ok for the price we paid (half retail), but this storage array, with the guts of an old IBM DS4100 which had an anemic 485 MB/sec internal bus speed, is not able to max out the total sequential read or write performance of the 15 disks it is able to contain. I imagine if you expand it with MD-1000 enclosures this deficit is even more obvious. More on that later.

The setup
Two Dell 1950 hosts, each with two SAS/5e HBA (host bus adapter cards). The idea is to setup a highly available configuration. The SAS/5e cards each have two ports but since the MD3000 has a maximum of 4 ports (two per physical controller module) I am only using ONE port on each card, and four SAS cables. Both Dell 1950 poweredge hosts also have two internal drives connected to PERC5/i configured as a single mirror for the OS. The MD3000 does not support booting a Host OS. It is fully populated with 15 SAS seagate 15k (136gb usable) drives.

more here




More in Tux Machines

Games Leftovers

Android Leftovers

HTC U11 Life (Android One) review: Keep it simple

Android One has arrived in Europe, and HTC is one of the first manufacturers to ship an affordable, Google-branded phone. The Android One badge made its debut in India and parts of Asia, as Google emphasized quality software on super-cheap hardware. But with its latest round of "One" handsets, the prices are higher, the products more premium, and the hand on the software rudder a little firmer. The Android One U11 Life — unlike the T-Mobile U.S. version we reviewed separately, running HTC Sense — runs Android 8.0 Oreo out of the box, and comes with the promise of timely updates to future versions. It takes the fundamentals of HTC's flagship phone and downscales it into a smaller size, while trimming the specs back to the essentials. There's a Snapdragon 630 processor — Qualcomm's latest mid-ranger, and the successor to the very capable 625/626 — along with 3GB or 4GB of RAM, and 32 or 64GB of storage, plus microSD. I've been using the 3/32GB model for the past couple of weeks, however the UK will be getting the more capacious 4/64GB model when it goes on sale. Read more

The power of open source: Why GitLab's move to a Developer Certificate of Origin benefits the developer community

Over the past few years, open source software has transformed the way enterprises operate and ship code. In an era where companies are striving to deliver the next best application, enterprises are turning to the sea of open source contributors to create projects faster and more effectively than ever before. For instance, 65 percent of companies surveyed in The Black Duck Future of Open Source Survey reveal they are contributing to open source projects – with 59 percent doing so to gain a competitive edge. As open source continues to have a positive influence on software development, it’s important for developers to continue to participate in and contribute to open source projects. Read more