{"id":5366,"date":"2024-07-01T01:00:31","date_gmt":"2024-07-01T09:00:31","guid":{"rendered":"https:\/\/jetstreamsoft.com\/portal\/?post_type=ht_kb&#038;p=5366"},"modified":"2025-02-13T15:54:26","modified_gmt":"2025-02-13T23:54:26","slug":"vcenter-alarm-dr-store-degraded-in-multi-pathing-mode","status":"publish","type":"ht_kb","link":"https:\/\/jetstreamsoft.com\/portal\/jetstream-knowledge-base\/vcenter-alarm-dr-store-degraded-in-multi-pathing-mode\/","title":{"rendered":"(Alarm) DR Store Degraded in Multi-Pathing Mode"},"content":{"rendered":"\n<p class=\"is-style-info wp-block-ht-blocks-messages wp-block-hb-message wp-block-hb-message--withicon\">This article applies to all JSDR software versions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Alarm<\/h2>\n\n\n\n<p class=\"\">This alarm signals failure or degredation of a storage IO path in a multi-path network configuration.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"808\" height=\"212\" src=\"https:\/\/jetstreamsoft.com\/portal\/wp-content\/uploads\/2024\/07\/def-multipath.png\" alt=\"\" class=\"wp-image-5367\" srcset=\"https:\/\/jetstreamsoft.com\/portal\/wp-content\/uploads\/2024\/07\/def-multipath.png 808w, https:\/\/jetstreamsoft.com\/portal\/wp-content\/uploads\/2024\/07\/def-multipath-300x79.png 300w, https:\/\/jetstreamsoft.com\/portal\/wp-content\/uploads\/2024\/07\/def-multipath-768x202.png 768w, https:\/\/jetstreamsoft.com\/portal\/wp-content\/uploads\/2024\/07\/def-multipath-50x13.png 50w\" sizes=\"(max-width: 808px) 100vw, 808px\" \/><figcaption class=\"wp-element-caption\"><em>Example: Alarm definition in vCenter.<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"is-style-info wp-block-ht-blocks-messages wp-block-hb-message wp-block-hb-message--withicon\">This alarm only applies to environments that use iSCSI multi-path IO configurations for replication log disks.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Symptoms<\/h2>\n\n\n\n<p class=\"\">When iSCSI storage that uses multi-pathing mode exhibits degraded performance, users may observe:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\">iSCSI sessions timing out or dropping.<\/li>\n\n\n\n<li class=\"\">Slower data transfer rates or higher than usual read\/write times.<\/li>\n\n\n\n<li class=\"\">Frequent path failures or loss of connectivity.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Resolution<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li class=\"\">Validate the storage network and ensure there are no underlying issues with it.<\/li>\n\n\n\n<li class=\"\">Validate the logs related to the provisioned iSCSI storage.\n<ul class=\"wp-block-list\">\n<li class=\"\">Search for any path failures.<\/li>\n\n\n\n<li class=\"\">Search for any change or reduction in replication transfer speeds.\n<ul class=\"wp-block-list\">\n<li class=\"\">Try to identify the time and cause of any problems.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li class=\"\">If a path is down or not operating properly, resolve the problem then validate that normal behavior has been restored.<\/li>\n<\/ol>\n\n\n\n<p class=\"is-style-alert wp-block-ht-blocks-messages wp-block-hb-message wp-block-hb-message--withicon\">This issue can be encountered when the replication log disk is configured for iSCSI multipathing, typically only used for on-premises configurations.<br><br>AVS does not directly support or generally use iSCSI disks in multipathing mode.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Alarm This alarm signals failure or degredation of a storage IO path in a multi-path network configuration. Symptoms When iSCSI storage that uses multi-pathing mode exhibits degraded performance, users may observe: Resolution<\/p>\n","protected":false},"author":1,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"ht-kb-category":[92],"ht-kb-tag":[249],"class_list":["post-5366","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-troubleshooting","ht_kb_tag-alarm-jetstream"],"_links":{"self":[{"href":"https:\/\/jetstreamsoft.com\/portal\/wp-json\/wp\/v2\/ht-kb\/5366","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jetstreamsoft.com\/portal\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/jetstreamsoft.com\/portal\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/jetstreamsoft.com\/portal\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jetstreamsoft.com\/portal\/wp-json\/wp\/v2\/comments?post=5366"}],"version-history":[{"count":4,"href":"https:\/\/jetstreamsoft.com\/portal\/wp-json\/wp\/v2\/ht-kb\/5366\/revisions"}],"predecessor-version":[{"id":6624,"href":"https:\/\/jetstreamsoft.com\/portal\/wp-json\/wp\/v2\/ht-kb\/5366\/revisions\/6624"}],"wp:attachment":[{"href":"https:\/\/jetstreamsoft.com\/portal\/wp-json\/wp\/v2\/media?parent=5366"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/jetstreamsoft.com\/portal\/wp-json\/wp\/v2\/ht-kb-category?post=5366"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/jetstreamsoft.com\/portal\/wp-json\/wp\/v2\/ht-kb-tag?post=5366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}