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

Black Lab SDK 1.8 released

QT Creator - for QT 5 Gambas 3 - Visual Basic for Linux Ubuntu Quickly - Quick and dirty development tool for python emacs and Xemacs - Advanced Text Editor Anjuta and Glade - C++ RAD development tool for GTK Netbeans - Java development environment GNAT-GPS - IDE for the following programming languages. Ada, C, JavaScript, Pascal and Python Idle - IDE for Python Scite - Text Editor Read more

Did Red Hat’s CTO Walk – Or Was He Pushed?

He went on to say that some within Red Hat speculate that tensions between Stevens and Paul Cormier, Red Hat’s president of products and technologies, might be responsible, although there doesn’t appear to have been any current argument between the two. Cormier will take over Stevens’ duties until a replacement is found. Vaughan-Nichols also said that others at Red Hat had opined that Stevens might’ve left because he’d risen as high as he could within the company and with no new advancement opportunities open to him, he’d decided to move on. If this was the case, why did he leave so abruptly? Stevens had been at Red Hat for nearly ten years. If he was leaving merely because “I’ve done all I can here and it’s time to seek my fortune elsewhere,” we’d expect him to work out some kind of notice and stay on the job long enough for Red Hat to find a suitable replacement. Turning in a resignation that’s effective immediately is not the ideal way to walk out the door for the last time. It smells of burning bridges. Read more

Firefox OS Smartphones Change The Mobile Landscape Across India

The launch of two Firefox OS phones in India in the same week marks an exciting moment in Mozilla’s mission to promote openness and innovation on the Web, and an opportunity to empower millions of Indians wanting to buy their first smartphones. Firefox OS will enable users to obtain lower-cost devices that offer telephony, messaging and camera and rich capabilities like built-in social integration with Facebook and Twitter, the Firefox browser, FM radio and popular apps. Read more

Mozilla Marches Ahead with Ads for Firefox

This November, Mozilla is up for renegotiation with Google for placement of Google search as the default search in Firefox and for the related subsidies that Google pays Mozilla, which reached almost $300 million last year. That comprised the majority of Mozilla's income. With Chrome establishing itself as a leader in the browser wars, its unclear what relationship Google will continue to pursue with Mozilla. Read more