- PCI-e vs PCi system bus - MIPS Stream processors - hdd failure statistic - SMART xceedUltra u100 -

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POSTER: computer news   ||   PCI-E VS PCI SYSTEM BUS	DATE:2007-02-27
In the opinion of specialists from the analytical company inStat, the system bus PCI express (PCI- E) became in practice universal solution, used in PC from all categories and x86- compatible servers. This conclusion was presented in the recently prepared by them report. Introduction of PCI- E occurred by fast rates. They rapidly show up on the market for desktop pc motherboard and servers. Let us recall that PCI- E strongly differ from its predecessor : PCI system bus . In particular, this difference is in the fact that this PCI- E is sequential, but not parallel interface, due to it developers was able to decrease the number of contacts and to increase the capacity. Another special feature Of PCI-Express lies in the fact that transmission channel can be formed by several lines, and this furthermore add possibility to substantially increase the capacity . In the beginning of year , group PCI-SIG, critical for the standardization of PCI- E, accepted the new specifications version , which received the designation PCI express base 2.0. The higher-speed diagram of signals transfer will alow to increase the maximum speed of data from 2,5 to 5 GT/s (GigaTransfers per second ). In this case summary capacity of 16- linear connection (x16) composes approximately 16 Gb/s. So, the first chipsets with support to PCI express base 2.0 can become AMD RV630, whose official announcement is expected during May. According to the estimation of analysts to 2010, PCI- E will be used in 440,2 mln. devices. Statistics also calculated, that in 2006 PCI- E was used in 17 mln.  and to 2010 this quantity will grow to 37,2 mln. units. Concerning the devices of consumer electronics, here PCI- E is the rare guest, however, as PCI. The report compilers assume that this situation will be preserved in the near future. PCI-e vs PCi system bus	Add Comment ( 0 ) PCI-E VS PCI SYSTEM BUS

POSTER: computer news   ||   MIPS STREAM PROCESSORS	DATE:2007-02-27
It seems that AMD, which presented at the end of last year its first data processor, soon can appear competitor in MIPS, which reported the conclusion of agreement about the collaboration with SPI (Stream processor incorporated). Let us recall that SPI, in turn, recently released for the market the first digital signal processors storm-1, optimized for the parallel calculations. But here MIPS is possible to name novice in this region ; company specializes predominantly in the built in solutions. According to the estimations of the servers Taiwan producers , the highly productive systems or HPC (high performance computers), in which are used Stream processors, now occupy 10% portion of the world market for servers, but income from their sales comprises not less than 10 billion dollars yearly. In the piece calculation this market is evaluated at 250 thousand units, 80% of which are the models of initial level  by the cost less than 50 thousand dollars, and 20% - high-end solution with price to 100 mln. dollars each. In the Stream processors, created BY MIPS and SPI, is planned to use of microprocessor core MIPS32 4KEc. The solutions MIPS and SPI are produced with the observance of the standards 0,13- m technical process and they reach performance 1,5 DMIPS (Dhrystone MIPS, millions operations in second)/MHz. The maximum frequency 0,13- m MIPS 4KEc is 233 MHz. MIPS Stream processors	Add Comment ( 0 ) MIPS STREAM PROCESSORS

POSTER: computer news   ||   HDD FAILURE STATISTIC	DATE:2007-02-27
Colleague Carnegie Mellon university, doctor Bjank Schroeder published his own study in the cases of failure for the system hard disks. Let us recall, for a while back the same problem were dedicated material, published by Google. Specifically, work Schroeder was honored the reward FAST'07 best paper in the category academic scientific computer research. By material came out about 100 thousand hard disks , including those installed in the clusters Los Alamos and  super-computer center, and also in several providers Internet- services. Here are some the key conclusions, made Schroeder, according to the results of analysis. Were noted the extremely small difference in the percentage of failure from the system of hdd, equipped with interfaces SCSI, Fiber channel and SATA, otherwise speaking, between the disks industrial and consumer destination. Child mortality of disks, in the opinion of researcher, is not the underestimated problem. In this the report is differed from the point of view Of google. The percentage of failure from system disk, according to Schroeder, grows with their period of service. Report assumes that child mortality disks is sufficiently correctly evaluated by producers, whereas the early wear of hard disks, i.e., a considerable increase in the breakdowns after the year of work is in reality basic problem. At present standard IDEMA (International disk drive equipment and Materials association) provided the standards of failure for the disks those worked out 1-3, 4-6, 7-12 and 13-60 months. The in force standard, in the opinion of researcher, does not consider a constant increase in the number of breakdowns, beginning from the second year of service disk, and it needs modification. The average yearly percentage of hdd failure varies in the range from 0,5% to 13,5%. The weighted mean level of breakdowns composed 3% yearly (declared by producers HDD - 0,88%). Researcher draws the conclusion that declared by producers the period of time to failure in format  on the average, millions of hours, do not correspond to reality. Actually this index composes 300 thousand hours. Shredder noted that in the case of hdd failure one of disks massif substantially rises the probability of failure for all data , which duplicates one and the same information. Unfortunately, data according to the producers HDD in this report, as in a study Of google, it was not represented. hdd failure statistic	Add Comment ( 0 ) HDD FAILURE STATISTIC

POSTER: computer news   ||   SMART XCEEDULTRA U100	DATE:2007-02-27
The company SMART modular technologies released the first model of new rule products, which was called XceedUltra. In the rule will be united the solid-state hard disks  the disk, built on the base of flash- memory, but equipped with interfaces, which make possible to connect them instead of the usual hdd. On the assertionof  SMART, the model xceedUltra u100 became the first in the branch, equipped with interface SATA and which demonstrated the steady speed of reading 107 mb./and the records 67 mb./s. disk has high speed operation are especially claimed in applications, which intensively work with data, such, as“video on the demand or search systems. In the articles SMART modular technologies is realized the correction of errors and the special algorithms, which prevent the uneven production of resource flash- memory. The disk xceedUltra Of u100 can be united in the massifs (RAID and JBOD), additionally increasing speed and reliability. Some technical specifications: Peak rate reading/writing  150 mb./; Access Time : 0,3 ms; Supplay Voltage : 5 v; Required power: in regime idle time : 2,5 W; in regime reading/writing 5 W; Sizes: 100,25 X 68,9 X 9,5 mm (form factor 2,5 inches); Weight : 100 g. The model xceedUltra u100 will be released in four modifications: with volume 8, 10, 16 and 20 Gb. Familiarizing models are at present accessible, and for spring this year is planned the issue of more capacious modification by volume 40 Gb. SMART xceedUltra u100	Add Comment ( 0 ) SMART XCEEDULTRA U100

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