sas forks

PMC provides cost-effective customized server hardware for ultra-large scale deployment PMC announced the first release of 16 Port 12 Gb/s SAS and 16 port 6 Gb/s sata I/O controller solutions. PMC's data center I/O Controller Product Series help OEMs and ODM to provide cost-effective customized server hardware for ultra-large scale deployment, deployment in environments such as opencompute, Windows ECs, open stack, and Scorpio plan. The port density o

chipset (MCH) Intel x58 Intel 5400 North Bridge Chip features Intel VT-D Technology 24 MB Snoop Filter Memory Controller Built-in three-channel ddr3 Processor North Bridge integrated four-channel FB-DDR2 Memory 1 GB ddr3 1066 SDRAM X3 2 GB FB-DDR2 667 SDRAM X4 System Disk Subsystem Disk Controller Lsi sas 3041e-r LSI sas1068e Controller Disk controller specifications

disk is mainly used in middle and high-end servers, high-end workstations and storage devices. The SCSI interface is currently used with 68-pin and 80-pin interface specifications. The SCSI interface is a parallel transport interface. To emphasize, SCSI this kind of hard disk basically already eliminated, use very few similar to SATA replace Pata, SCSI also must be replaced by its upgrade product SAS (serial attached SCSI). (iii)

set many of the latter's parameters for you, making the entire conversion process simpler and consistent. First, download and install the Hmisc package (the foreign package is installed by default): > install.packages ("Hmisc") Then, use the following code to import: > Library (HMISC) MyData In this code, MYSPSS.SAV is the SPSS data file to be imported, and use.value.labels=true means that the function imports the variable with the value label into the same factor as the horizontal correspondi

ability to break through the bottleneck, can make the entire industry scale start to grow exponentially. Privately, it is only by understanding the origins of the era of big data that we can put our position in the tide of times. Milestone 2:r/python Two years ago, we were discussing "what software should be used for statistical analysis". There were many options at the time, Spss,sas,r,python,excel,eviews,stata,c++,java ... The number is not counte

Whether it's data analysis, data visualization, or data mining, everything is based on data as the most basic element. Using Python for data analysis, the same most important step is how to import data into Python before you can implement data analysis, data visualization, data mining, and so on. In this period of Python learning, we will take a detailed description of how Python obtains external data, from which we will learn about the following 4 areas of data acquisition:

generation, the new node generated chunks, the old node will be considered legal or illegal, the old node generated chunks, the new node will also be considered legal or illegal. There is always a 51% critical point in the blockchain, so we think the new node is more than 50% of the calculation force. First, the soft and hard fork to do an explanation: Soft fork: Official definition: A temporary fork in the block chain which commonly occurs when miners using non-upgraded nodes violate A new c

firmware level:0 00B Shield counter:0 Successful Diagnostics completion on:n/a SAS address (0): 0x5000c5007e156791 SAS Address (1): 0x0 C onnected Port number:1 (path0) Inquiry data:seagate st3600057ss 000b6sl9aqg9 FDE capable:not capable FD E enable:disable Secured:unsecured locked:unlocked Needs EKM attention:no Foreign state:none Device speed:6.0gb/s Link speed:6.0gb/s Med IA type:hard Disk Device drive

will get the main mode SA. Quick Mode Negotiation During quick mode negotiation, a pair of IPsec SAS is established to help protect the application traffic, which can include packets sent over TCP, User Datagram Protocol (UDP), and other protocols. First, the following policy parameters are negotiated: The IPSEC Protocol line format (AH or ESP), the hash algorithm to ensure integrity and authentication (MD5 or SHA1), and the encryption algorithm (DES

few years, the cost of electricity will easily exceed the cost of hardware and is likely to be quite large," Luiz Andre Barroso, a Google engineer, said in the ACM Queue magazine. The direction of all kinds of speech, the single chip processing technology as a temporary solution, relying solely on single chip processing technology does not solve the power challenge. We hope that in the next two or three years, the next generation of processors will be able to alleviate, and the server's basic c

An often misunderstood topic was that of chain splits and how they are potentially. With the recent proposal fromshaolinfrydiscussing User activated Soft forks (UASF) Getting much attention, the Se misunderstandings must is clarified to fully understand the implications of chain splits and their potential S. Types offorks The Miners can create chain splits through the deliberate orphaning of blocks to is appear to valid. The Users maintain a set o

directly:yum install stress -y User GuideThe first step is to set up a test directory for the files to be written to.stressThe main parameters of the description (-to be followed by an underscore,--that is, followed by 2 underline, can be used for stress after the parameters, different expressions): -？--HELP Display Help information--version displaying software version information-T secs:--timeout secs Specify how many seconds to run--backoff Usecs waits Usecs microseconds before

sipsession is used to save the state, do list or map really need it ?... It seems that no longer needed! Sipsession lifecycle Haha !~ It's all nonsense! You only need to set the session attribute value (held) when you receive the 182 message as a tag. When you receive the ACK message, you can judge the Ack. getsession (). whether getattribut ("flag") equals held. if yes, proxy the ACK request and Sipapplicationsession SAS = ack. getapplicationsessi

The following is the method of Baidu, fsck cautious use, in addition fuser can solve Umount encounter device busy situation Mount;d f-h Vi/etc/fstab is a number of commands that are often used when you encounter read-only and file systems But the situation I encountered the above method is invalid, is the hardware direct failure of a lot of command lost no response, file system only read but under the mount to see all is RW; After the system restart directly halt off; Check the ILO log tips h

9 (rev.) 00:14.0 Pic:intel Corporation 7500/5520/5500/x58 I/o Hub System Management Registers (Rev 13) 00:14.1 Pic:intel Corporation 7500/5520/5500/x58 I/O Hub GPIO and Scratch Pad registers (rev.) 00:14.2 Pic:intel Corp Oration 7500/5520/5500/x58 I/O Hub Control Status and RAS registers (rev.) 00:1a.0 USB Controller:intel Corporation 828 01I (ICH9 Family) USB UHCI Controller #4 (rev) 00:1c.0 PCI Bridge:intel Corporation 82801I (ICH9 Family) PCI Express P ORT 1 (rev.) 00:1d.0 USB Controller:int

--version displaying software version information-T secs:--timeout secs Specify how many seconds to run--backoff Usecs waits Usecs microseconds before it starts running-C Forks:--CPU forks produces multiple CPU processes that handle sqrt () functions-M forks--VM forks: Produces multiple processes that process malloc ()

transmission is very efficient, but due to physical reasons on the line, the transmission frequency cannot be too high, so the actual transmission speed is not proportional to the degree of parallelism, or even worse. (2) The serial interface refers to the serial transmission interface, which is also 0 ~ 9 10 digits. If one transmission line is used, it must be transmitted for 10 times and the Hong Kong virtual host can be used.Theoretically, the serial transmission efficiency is not high, but

File System Knowledge SummaryWhat do I need to do to store the data for a newly purchased hard drive?First, the hard disk installed RAID, after the raid to partition, after the completion of the format to create a file system, and finally storage data.internal and external structure of the hard drive:Physical shape:Interface type:The IDE (Integrated drive Electronics) is an "electronic integrated driver".SCSI (Small computer system Interface) small computer system interface.SATA (Serial Advanced

to achieve enterprise-level server performance and reliability. Its standard 2 GB FB-DIMM/ECC full buffer memory, if using a single 4 GB memory can support 32 GB of massive memory. Powerful I/O scalability of servers to meet the potential application requirements of most users. The dual-gigabit network interface and multiple extension interfaces inside the server fully meet users' demanding requirements for server functional upgrade in the future, the design of the front and rear external USB i

also place mon on osd, which is not recommended in the production environment.The hardware configuration of the ADM server is relatively random. You can use a low-configuration virtual machine to operate and manage Ceph;Two hard disks of the MON server are used as RAID 1 to install the operating system;The OSD server uses 10 4 TB hard disks for Ceph storage. Each osd corresponds to one hard disk, and each osd requires one Journal. Therefore, 10 journals are required for 10 hard disks, we use tw