{"id":4163,"date":"2026-06-08T18:00:43","date_gmt":"2026-06-08T15:00:43","guid":{"rendered":"https:\/\/support.withsecure.com\/en\/?post_type=support_article&#038;p=4163"},"modified":"2026-06-08T18:00:43","modified_gmt":"2026-06-08T15:00:43","slug":"msg-alerts-romb-battery-is-low-and-that-raid-is-in-write-through-mode-performance-will-be-degraded","status":"publish","type":"support_article","link":"https:\/\/support.withsecure.com\/jp-ja\/support-articles\/msg-alerts-romb-battery-is-low-and-that-raid-is-in-write-through-mode-performance-will-be-degraded\/","title":{"rendered":"MSG alerts ROMB Battery is low and that Raid is in Write-Through Mode, Performance will be degraded"},"content":{"rendered":"<h3>Issue:<\/h3>\n<p>Messaging Security Gateway (MSG) appliance is reporting the following alerts:<\/p>\n<ul>\n<li><i>crit eid.plinx.log.sel Battery ROMB Battery | Low | Asserted<\/i><\/li>\n<li><i>err eid.plinx.raid Raid is in Write-Through Mode, Performance will be degraded.<\/i><\/li>\n<\/ul>\n<h3>Resolution:<\/h3>\n<p><span style=\"font-size: 13px;\">These alerts are related to the RAID battery relearning and are completely normal behaviour for the appliance.<\/p>\n<p>Battery relearns occur every 90 days by Hardware default. During a battery relearn, the battery fully discharges and gains statistical information regarding its overall State of Health (SoH). When the battery charge drops below a charge threshold, the disk write-cache policy changes to Write-Through.<\/span><\/p>\n<p>What does disk Write-Through mean? This means that the data writes occur twice (to Memory and Disk) to protect and preserve the data in the event of a critical hardware failure or disk failure.<\/p>\n<p>The battery will fully discharge, and when the disk write-cache policy changes to Write-Through, the Appliance RAID is degraded and performance is affected. Any changes to hardware or something that will trigger an asserted failure (such as ROMB Battery failed (since it&#39;s discharged entirely)), will generate a PPS alert.<\/p>\n<p>As the battery recharges, the disk write-cache policy changes to Write-back. As this is the normal state of the hardware, the alerts will cease as the battery is operational and the SoH is good.<\/p>\n<p>As this happens every 90 days for each appliance where a RAID Controller is present, you should expect to see these alerts reoccur regularly. If the appliance doesn&#39;t recover (can be expected to happen in a few hours), open a support ticket.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Your RAID hardware returns the error\u00a0<i>Raid is in Write-Through Mode, Performance will be degraded<\/i>.<\/p>\n","protected":false},"template":"","support_article_product":[106],"class_list":["post-4163","support_article","type-support_article","status-publish","hentry"],"acf":{"source_foreign_id":"000005589","source_version":3,"source_system":"salesforce","source_date_updated":"2026-06-08 15:00:43","import_hash":"c53eee8749635234ba8affca3c4bf44dd3cb2755","vanilla_article_id":31176,"vanilla_url":"https:\/\/community.withsecure.com\/en\/kb\/articles\/31176-msg-alerts-romb-battery-is-low-and-that-raid-is-in-write-through-mode-performance-will-be-degraded","vanilla_kb_id":30,"vanilla_category_id":103,"machine_translated":false,"reactions_helpful_yes":0,"reactions_helpful_no":0},"_links":{"self":[{"href":"https:\/\/support.withsecure.com\/jp-ja\/wp-json\/wp\/v2\/support_article\/4163","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/support.withsecure.com\/jp-ja\/wp-json\/wp\/v2\/support_article"}],"about":[{"href":"https:\/\/support.withsecure.com\/jp-ja\/wp-json\/wp\/v2\/types\/support_article"}],"wp:attachment":[{"href":"https:\/\/support.withsecure.com\/jp-ja\/wp-json\/wp\/v2\/media?parent=4163"}],"wp:term":[{"taxonomy":"support_article_product","embeddable":true,"href":"https:\/\/support.withsecure.com\/jp-ja\/wp-json\/wp\/v2\/support_article_product?post=4163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}