Power supply failure rate Seagate to launch 2.5" 15,000 Rpm hard drive

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Power supply failure rate   Posted on 17/01/2007 at 16:21 by Marc

	Today, we obtained the failure rate of power supplies recorded by a major French e-commerce. These statistics include products in shops since the first April 2006. At least 100 units of each product listed below have been sold. Statistics per brand are based on a minimum sample of 500 units: Fortron: 0.7% Hiper: 1.2% Seasonic: 1.4% Thermaltake: 1.6% Tagan: 2.8% Enermax: 3.0% Antec: 9.5% Fortron comes first in the list followed by Hiper and Seasonic. Thermaltake is next and is the last manufacturer to have acceptable failure rates. Tagan, Enermax and most of all Antec are above the limit. For Antec, the SmartPower 2.0 range including the 500, 350 and 400 Watts versions has very high failure rates: respectively 21.6%, 18.1% and 17.3%. Not a single product has a rate below 2% and the best one is the Neo HE 430 watts at 2.6%. For Fortron, the figures are a bit more disparate from 0% for the most reliable model to 1.5% for the "least" reliable. Hiper's rates oscillate from 0.4% and 3.8%. The two models above 2% are the modular R 580 watts. For Seasonic, the leading products S12-500 and 600 are respectively at 1.8% and 0.9%. Thermaltake's rates vary from 0% to 2.5% except for the Silent Power 680 Watts which is at 6.6%. Tagan's figures are relatively stable from 2.3% to 3.3%. Finally, Enermax' rates oscillate from 1.8 to 5.1% (Liberty EL620AWT).

Seagate to launch 2.5" 15,000 Rpm hard drive   Posted on 17/01/2007 at 00:18 by Nicolas - source: Seagate

	Today, Seagate, who released in February 2004 the first 2.5" 10,000 Rpm hard drive, announced the Savvio 15K. As it is written in the title, the spin rate increases to 15,000 Rpm and Seagate announced that this Serial Attached SCSI was the world fastest hard drive. The drive access time is 2.9ms. This has to be compared to 3.8ms for the Savvio 10K.2 and 3.5ms for the Cheetah 15K.5 which is a 3"1/2. With 16 MB of cache, it requires 5.8 watts in use instead of 5.2 for the 10K.2 and 8.4 watts for the 15K.5. With a storage capacity of 36 and 73 GB, the Savvio 15K do not permit an equivalent density to the Savvio 10K.2 which is available in 73 and 146 GB versions. Knowing that it is 70% less big than the 3"1/2 equivalent, it will be particularly well fitted for 1 or 2U servers requiring an important amount of high-performance hard drives. On the reliability side, Seagate announced a failure rate of 0.55% for a 24/7 use. The MTBF is contently of 1.6 million hour. This is equivalent to the Savvio 10K.2 and a little lower than the 15K.5 which is at 0.62%.