Today I finally soldered a serial communication cable between my server and the SmartUPS 900 which is essential in the fluctuating power grid which Vattenfall operates here in Uppsala. Before I just relied on the UPS to be powerful enough to get my server over all the small glitches and black outs, but with the new start of the server I also wanted to get full control over the UPS. The UPS is now monitored by apcupsd<\/a>.<\/p>\n But the very first thing I had to discover was that obviously I need to get a new set of batteries. These batteries have been only running since I moved to Uppsala in September 2006 – I would have expected a slightly longer lifetime… A new set of batteries (there are four of these inside the UPS if I remember it correctly) will set me back another SEK 1200:- while a newer UPS with a single battery costs slightly less. However, I have no idea what those replacement batteries would then cost or how long they would last. <\/p>\n","protected":false},"excerpt":{"rendered":" I thought this was it – well it wasn’t… This weekend I put everything together again: the server and all four harddisks (one system hdd and three data hdds in RAID 5). I put the server in the closet where it usually resides and powered it up. Then I tried to connect to it, but […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"enabled":false},"version":2}},"categories":[22,8],"tags":[],"class_list":["post-308","post","type-post","status-publish","format-standard","hentry","category-computers_en","category-everything_en","entry"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p48grL-4Y","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/posts\/308","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=308"}],"version-history":[{"count":10,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/posts\/308\/revisions"}],"predecessor-version":[{"id":2558,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/posts\/308\/revisions\/2558"}],"wp:attachment":[{"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"\"](\"http:\/\/www.sciencetronics.com\/greenphotons\/wp-content\/uploads\/2010\/04\/20100419_APCUPS.png\" "\\"20100419_APCUPS\\"")
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