![\"Smile\"](\"https:\/\/aidanfinn.com\/wp-content\/uploads\/2013\/09\/wlEmoticon-smile.png\")
In the demo, I have 2 Dell R420 hosts with a bunch of NICs:<\/p>\nI\u2019m building a demo for some upcoming events, blatantly ripping off what Ben Armstrong did at TechEd – copying is the best form of flattery, Ben In the demo, I have 2 Dell R420 hosts with a bunch of NICs:<\/p>\n
It\u2019s absolutely over the top for real world but it gives me demo flexibility, especially to do the following. In the demo, I have a PowerShell script that will perform a measured Live Migration of a VM with 8 GB RAM (statically assigned). The VM is a pretty real workload: it\u2019s running WS2012 R2, SQL Server, and VMM 2012 R2.<\/p>\n
The script then does:<\/p>\n
<\/li>\n<\/ol>\n
What I observed in my test runs:<\/p>\n
Nearly 10 Gbps over a single NIC. <\/li>\n![\"Open-mouthed](\"https:\/\/aidanfinn.com\/wp-content\/uploads\/2013\/09\/wlEmoticon-openmouthedsmile.png\")
Nearly 20 Gbps over the two iWARP rNICs. <\/li>\n<\/ul>\nAnd the time taken for each Live Migration?<\/p>\n
Over 78 seconds to move a running VM over a 1 GbE network without optimizations! Imagine that scaled out to a host with 250 GB RAM of production VM memory, needing to be drained for preventative maintenance. That\u2019s over 40 minutes, but it could be longer. That\u2019s a long time to wait to get critical services off of a host before a hardware warning becomes a host failure.<\/p>\n As the Live Migrations get faster they get closer to the theoretical minimum time. There are four operations:<\/p>\n The first and last operation cannot be accelerated, generally taking a couple of seconds each. In fact, the first operation could take longer if you use Virtual Fiber Channel. <\/p>\n This test with with a more common VM with 8 GB RAM. Remember that I moved a VM with 56 GB RAM in 35 seconds<\/a> using SMB Direct + Multichannel? That test was 33 seconds earlier today on the same preview release. Hmm, I think that hardware would take 2.5 minutes to drain 250 GM RAM of VMs, versus 42 minutes of un-optimised Live Migrations. I hope the point of this post is clear; if you need dense hosts then:<\/p>\n I\u2019m building a demo for some upcoming events, blatantly ripping off what Ben Armstrong did at TechEd – copying is the best form of flattery, Ben In the demo, I have 2 Dell R420 hosts with a bunch of NICs: 2 disabled 1 GbE NICs 2 Enabled 1 GbE NICs teamed for Live Migration … Continue reading “Comparing TCPIP, Compressed, and SMB WS2012 R2 Hyper-V Live Migration Speeds”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_wpcom_ai_launchpad_first_post":false,"footnotes":""},"categories":[20],"tags":[181,74,80,195,120],"class_list":["post-15421","post","type-post","status-publish","format-standard","hentry","category-hyper-v","tag-hyper-v","tag-live-migration","tag-networking","tag-virtualisation","tag-windows-server-2012-r2"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t![\"image\"](\"https:\/\/aidanfinn.com\/wp-content\/uploads\/2013\/09\/image5.png\" "\\"image\\"")
<\/a><\/p>\n\n
\n
Technorati Tags: Windows Server 2012 R2<\/a>,Hyper-V<\/a>,Virtualisation<\/a>,Live Migration<\/a>,Networking<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"