{"id":1432,"date":"2020-06-15T00:51:09","date_gmt":"2020-06-14T22:51:09","guid":{"rendered":"https:\/\/itsimple.info\/?p=1432"},"modified":"2020-06-15T00:51:47","modified_gmt":"2020-06-14T22:51:47","slug":"dell-compellent-sc-3020-high-read-latency-slow-preformance","status":"publish","type":"post","link":"https:\/\/itsimple.info\/?p=1432","title":{"rendered":"Dell Compellent SC 3020 high read latency slow preformance"},"content":{"rendered":"

After installing DELL Storage SC 3020 with microsoft Hyper-v virtualization system I had terrible performance issue when copying files from the CSV to the host, Seems that all the file transfare between the host and the storage is extremely slow . and we could see it in the storage charts on the latency section. normally it is below 1. on the copying period it was around 100<\/p>\n

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After hour of investigation I found out that on the ISCSI switch, the ports was configure with flow control = off . After turning the flow control to auto the latency went down and the speed was improving by far !<\/p>\n

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In addition you have to make sure that in the cluster networks, you assign the right role to the network subnet<\/p>\n

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Good Luck<\/h3>\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

After installing DELL Storage SC 3020 with microsoft Hyper-v virtualization system I had terrible performance issue when copying files from the CSV to the host, Seems that all the file transfare between the host and the storage is extremely slow . and we could see it in the storage charts on the latency section. normally […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,21,4,12,18,14,15],"tags":[],"class_list":["post-1432","post","type-post","status-publish","format-standard","hentry","category-hyper-v","category-operating-systems","category-tech","category-tutorials","category-virtualization","category-windows","category-windows-server"],"_links":{"self":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/posts\/1432","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1432"}],"version-history":[{"count":0,"href":"https:\/\/itsimple.info\/index.php?rest_route=\/wp\/v2\/posts\/1432\/revisions"}],"wp:attachment":[{"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itsimple.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}