Datacenter Power. It seems you can never have enough.<\/p>\n
We have our colocation inside an Equinix IBX. It is an excellent facility. Unfortunately, about 2 years ago, our cage got a new neighbor<\/a>. They have added rack after rack of new servers to accommodate their ever increasing traffic. Which means they have effectively used up all the allocated power feeds for our section of the colo. Very quickly, we became experts on how much amperage we could squeeze out of our existing feeds and what systems required how much power.<\/p>\n Here are some anecdotal amperage readings we took from our fancy amp reading tool. Please note these readings are all taken with 120V feeds.<\/p>\n —<\/p>\n SuperMicro SuperServer 1U Half-depth server with X7DCA-L motherboard.<\/p>\n Specs:<\/p>\n Readings:<\/p>\n Dell PowerEdge 1950 1U<\/p>\n Specs:<\/p>\n Readings:<\/p>\n <\/p>\n SuperMicro SC815TQ-R700UB\u00c2\u00a01U server with X8DTU-F\u00c2\u00a0motherboard.<\/p>\n Specs:<\/p>\n Readings:<\/p>\n <\/p>\n SuperMicro SC813 1U Half-depth server with X7DCA-L motherboard.<\/p>\n Specs:<\/p>\n Readings:<\/p>\n <\/p>\n<\/div>\n<\/div>\n<\/div>\n Dell PowerEdge 2950<\/p>\n Specs:<\/p>\n Readings:<\/p>\n <\/p>\n Dell PowerEdge 2850<\/p>\n Specs: Dual Xeon 3.6GHz\/2MB; 2GB RAM; 6 x 73 GB SCSI Hard Drive (10K RPM); Dual Power supplies<\/p>\n Specs: Dual Xeon 3.6GHz\/2MB; 16GB RAM; 1 x 40GB Intel SSD, 6 x 300 GB SCSI Hard Drive (10K RPM); Dual Power supplies<\/p><\/blockquote>\n <\/p>\n Dell PowerEdge 1750<\/p>\n Specs: Dual Xeon 3.2GHz – 4GB RAM; 3 x 146 GB 10K rpm SCSI Hard Drives; Dual Power supplies <\/p>\n Dell PowerEdge 1650<\/p>\n Specs: Dual PIII 1.4Ghz; 2GB RAM; 3 x 36GB SCSI 10K rpm; Dual 275W Power supplies<\/p>\n Apple Power Mac G4<\/p>\n Specs: G4\/533 Dual – 1.5GB RAM – 2 x 18GB SCSI (15K rpm)<\/p><\/blockquote>\n Apple Xserve G4<\/p>\n Specs: Dual 1.0 Ghz G4, 2GB RAM 2x60GB & 2 x 180GB<\/p>\n Apple Xserve G5<\/p>\n Specs: Dual 2.0Ghz G5, 3GB RAM, 3 x 80GB SATA<\/p>\n Specs: Dual 2.3Ghz G5, 1GB RAM, 2 x 500GB SATA<\/p>\n Apple dual Quad Core Intel Xserve<\/p>\n Specs: Dual Intel 2.8Ghz Quad Xeon (8 cores), 16GB RAM, 3 x 1TB SATA in RAID 5<\/p><\/blockquote>\n Apple single Quad Core Intel Xserve (Xserve2,1 – Early 2008 model)<\/p>\n Specs: Single Intel 2.8Ghz Quad Xeon, 4GB RAM, 2 x 250GB SATA<\/p><\/blockquote>\n Apple Intel Mac Mini<\/p>\n Specs: Intel 1.66Ghz Core Duo, 2GB RAM, 60GB E-Rated Hitachi drive E7K100 model<\/p><\/blockquote>\n Apple G4 Mac Mini<\/p>\n Specs: 1.33Ghz PowerPC G4, 1GB RAM, no wireless, 32GB Transcend Solid State Disk<\/p><\/blockquote>\n Apple Xserve RAID (Xraid)<\/p>\n Specs: 7 x 250GB (Hitachi) and 7 x 750GB (Seagate 7200.10)<\/p><\/blockquote>\n SuperMicro SuperServer (PDSBM-LN2)<\/p>\n Specs: Core 2 Duo 2.2Ghz – Single 200W Power supply – 2GB RAM – 80GB SATA 5400rpm 2.5″ drive<\/p>\n Specs: Core 2 Quad 2.4Ghz (Q6600) – Single 200W Power supply – 4GB RAM – 80GB SATA 5400rpm 2.5″ drive<\/p><\/blockquote>\n IBM 4000R<\/p>\n Specs: Dual 833Mhz PIII – Single Power supply – 2 x 18GB SCSI (10K rpm)<\/p>\n IBM eServer x330<\/p>\n Specs: Two Intel Pentium III (Coppermine) 864MHz processors, 1GB RAM, Single Power Supply, Single 36GB SCSI drive<\/p>\n IBM eServer x336<\/p>\n Specs: Dual 3.0Ghz Xeon, 4GB RAM, Dual 575W Power Supplies, Dual 146GB SCSI drives<\/p>\n Some pieces of network equipment\/drives I’ve tested:<\/p>\n Dave from NetApp has some interesting things to say about power in the datacenter<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":" Datacenter Power. It seems you can never have enough. We have our colocation inside an Equinix IBX. It is an excellent facility. Unfortunately, about 2…<\/p>\n
\nSo as we started to fill our own cabinets, we found that we were quickly using up the 2 x 20A 110V feeds they had allocated to each of our cabinets. Our partner in colocation, sell.com<\/a> was also at this time upgrading their farm to the latest dual xeon models. These boxes were pulling a LOT more amps than the previous P3 generation.<\/p>\n\n
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\n(FYI, this operation of writing zeros to a ramdisk resulted in a dd stat of 757MB\/sec)<\/li>\n<\/ul>\n<\/blockquote>\n\n
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\nSoftware: Debian 5.0 – MySQL 5.0 – InnoDB heavy<\/p><\/blockquote>\n\n
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\n(calculated by adding all “watts” readings in Server Monitor and div by 115V)<\/li>\n<\/ul>\n<\/blockquote>\n\n
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