Hi, Has anyone had any experience with Intel Vroc[1]? I'm possibly having to deal with a new server with such technology and can't find much (real world) information about it. Looking at the specs it's basically a glorified fake raid which usually turns on my alarm bells. Has anyone done any testing, how does it compare with "real" raid or software raid? Cheers, Lucian [1] - https://www.intel.co.uk/content/www/uk/en/support/articles/000024498/memory-and-storage/ssd-software.html -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro
On Tue, 23 Apr 2019 10:00:45 +0100 (BST) Nux! <nux at li.nux.ro> wrote:> Hi, > > Has anyone had any experience with Intel Vroc[1]? I'm possibly having > to deal with a new server with such technology and can't find much > (real world) information about it. Looking at the specs it's > basically a glorified fake raid which usually turns on my alarm > bells. Has anyone done any testing, how does it compare with "real" > raid or software raid?Intel FAQ had the following nugget of info but I've yet to try it myself.. What is the difference between Intel? VROC and Linux* MD RAID? Intel? VROC for Linux* is built upon MD RAID, and the Intel VROC team has an MD RAID maintainer on the team. However, Intel VROC has the following extra features: * Provides UEFI HII and UEFI Shell command line RAID management * Provides webpage-based, remote RAID management and RESTful APIs * Fully validated and supported with Purley platform and industry-select * SSDs Provides hotfix/patch to specific customer issue on supported OS Seems a mess of licensing and enabling too :-( Also seen this from HPE: http://www8.hp.com/h20195/v2/GetPDF.aspx/c05821090.pdf And this from Intel: https://software.intel.com/en-us/articles/intel-xeon-processor-scalable-family-technical-overview /Peter K
> Hi, > > Has anyone had any experience with Intel Vroc[1]? I'm possibly having to > deal with a new server with such technology and can't find much (real > world) information about it. > Looking at the specs it's basically a glorified fake raid which usually > turns on my alarm bells. Has anyone done any testing, how does it compare > with "real" raid or software raid?>From their description: Intel? VROC for Linux* is built upon MD RAID...So, it is Linux MD RAID with some management addons. I prefer to stay far away from such addons. A nice feature is the LED management, but who needs it if you have proper monitoring and are not in the DC anyway? I prefer standard U.2 NVMe SSDs connected via PCIE to the CPU. Works wonderfully on AMD EPYC so I expect the same on Intel also. Just don't forget to adjust raid speed limits. I have dev.raid.speed_limit_max = 10000000 dev.raid.speed_limit_min = 15000 to enjoy full sync speed. Regards, Simon