qsfp28 100g

growth of the data volume, so the data volume of the Enterprise Data center will continue to increase, in its current in the million backbone, Gigabit access based on the network, we should also consider how integrated cabling to meet the needs of the next few years of network transmission, data center in the next few years will gradually realize the gigabit access, 40g/100g backbone of the network transmission mode.Tobacco Enterprise Data Center in

Docker boot file/usr/lib/systemd/system/docker.serviceInstalling DockerYum Install DockerStart DockerSystemctl Start DockerModify the Docker configuration fileVi/etc/sysconfig/dockerAdd parameters to options (new version 7 Docker is not available)--storage-opt dm.basesize=100g Single docker file system size limit 100G (default 10G)--storage-opt dm.loopdatasize=200g Total File size 200G (default

massive data processing Our massive data processing here is mainly through a few practical problems, application data structure, familiar with hash data structure, bitmap data structure, and Bron filter. If the hash data structure, bitmap data structure and Bron filter , click [Https://github.com/jacksparrowwang/cg19.github.com/tree/master/Data%20Structure] (GitHub) Massive data processing problem, encountered problems generally have the file too large can not be loaded into memory, the conte

a large or busy system can cause a lot of inconvenience, so what is the result of fragmentation? Suppose many users have a range of initial letters ["a", "F") in the name to register, which will result in a large shard 1, so we need to take out some of its documents to move it to Shard 2, we can adjust the interval to make Shard 1 (for example) into ["A", "C"), so that the Shard 2 into ["C", "N"), As shown in the following:In the Shard 1 migrating some data to Shard 2, the interval of shard 1 s

system, RHEL6 series default–XFS, advanced log file system, RHEL7 series default–swap, swap space (virtual memory)Directory structure/root directory (computer): Store all data (starting point of Linux system)/dev: Device filesHow disk is representedHD, indicating IDE deviceSD, indicating SCSI device/dev/sda1/dev/sdb2/dev/sdc3/dev/sdd4/dev/hda/DEV/SDA5: First logical partition#######################################################Ctrl+alt: Mouse back to the real machine #########################

Goal: reduce the volgroup-lv_home to 100G and add the remaining space to the Volgroup-lv_root===========================================================================Resolution process: # Df-h//view partition # Umount/home//un-mount # e2fsck-f/dev/mapper/volgroup-lv_home//partition detection # resize2fs-p/dev/mapper/volgroup-lv_home 100G//Set Lv_home virtual partition to

be the value of the inode together with CP. Using this CP at the same time increases the number of nodes in the link file and the linked file (i.e. the second column value when viewed through the LL command).3.Linux system tiering and RAID:User↑File system↑Raid↑Physical hard Disk 1 physical hard disk 2 ...Among them, the raid is divided into the following types, the role is different;RAID 0--Increased write speedRAID 1--mirroring, for securityRAID 3-requires a minimum of three physical hard dis

SQL Server Backup is a system engineering that is time-consuming. Because the database continues to grow during the run, the corresponding backup also takes more time. The 100G database is usually considered a very large database, now 100G is already very common, and now many databases have reached TB level. In this article, we will discuss how to make a quick backup of SQL Server in 10 ways. 1, the hard d

Multiple partitions (3 partitions best) In fact, it is very simple, let me briefly explain to you, 1, with Bootcamp to do the 1th step, you have to prepare for your XP to prepare how much hard disk space. For example, we have given XP 100G (the operation is not much to say, this should be all right) $ A5 d. u-j t# O9 x* Z8 D 2, the preparation of an XP installation disk, in the use of bootcamp partition, we need to use. Put the CD in the optical dri

Jinshan Express is Jinshan software based on cloud storage launched free synchronization network disk services, more than 45 million users. Recently, the major network to exit the expansion plan, Baidu Network disk, 360 cloud disk and so on have some action, Jinshan fast plate also not to let go. Jinshan Fast plate can be free to receive 100G permanent free space, then Jinshan fast plate How to expand it? Enter Jinshan Express official website (http:

be seen (as shown in Figure 2), to 2015 years more than 50% of the network device port with 10G port, and about 25% of the port will be used 40g/100g. From the related forecasts mentioned above, we can see that the network evolution of cloud computing data Center is very clear 唽 direction. In order to reduce the delay of the network and improve the response speed of the data center network, the cloud Computing data Center will adopt the core + Acc

There is such a migration of large files operation and maintenance scenario : For example, because the existing Web server configuration is not enough, you need to do a site migration (is to migrate to another high-configuration server with), the site directory has a large amount of small files, about 100G , picture files are mostly. It takes a few days to visually copy the past. So the question is, how do you migrate your website data in this situati

First you'll think of the DD command.But1, if the small hard drive is OK, the big hard drive on t is not high efficiency;2, moreover, DD is a hardware-level copy, the front of the MBR will also be restored to another disk, if the source hard disk is 100G, the target disk is 200G, and will have problems, 200G hard disk due to be overwritten by the write 100G hard disk MBR caused only available

With a new computer, ready to install a dual system, Windows used to play games, Linux to write code. Dedicated to buy two 1T hard drives, want to use to build RAID0, using parallel I/O to improve the performance of the computer. Select the motherboard when selected to support the raid of the motherboard, MSI B85-g43 Gaming, can use MSI super RAID technology, but bought after found that the driver of this thing is EXE program, OH, the motherboard support is only a pseudo raid, can only be used

servers, switches and active devices, integrated wiring provides the highest return on investment (ROI), the integrated wiring in its life cycle (10-15 years) to support at least 2~3 generation of network switching equipment upgrades, 3~5 PC hardware upgrades. Moreover, as an important part of the physical infrastructure of data center, the integrated cabling plays an irreplaceable role in the reliable operation of the data center. Three key words for data center cabling Small investment, big

Old rule: In the opening remarks, I started to use mysqldump to back up 100G + databases, coupled with the busy server, and the backup speed is like a snail bait, so I am looking for a more efficient backup method. The Internet says that xtrabackup is more suitable for backing up large databases, and the backup efficiency is also high. Just try it once. The result is obviously faster than mysqldump backup and recovery. Old rule: In the opening remarks

the separation of more than 110G of the idle area (100G to install linux,10g to store the installation image)2. Then use Diskgenius to separate the 10G space (FAT32 format) as the partition where the installation files are stored. //(honkly: God horse! You don't use Diskgenius, please do it yourself Baidu tutorial )And then we get the installation files.extract the images and Isolinux folders in the DVD1 to the new partition you created above, and th

OS to check and operate. The following is a simple usage: 1, create DG SQL> CREATE DISKGROUP ACFSDG EXTERNAL REDUNDANCY DISK 'ORCL:ASMDISK8' SIZE 4157 M DISK 'ORCL:ASMDISK9' SIZE 4157 MATTRIBUTE 'compatible.asm' = '11.2', 'compatible.advm' = '11.2'; 2. Modify the version. Sometimes, although the database installation version is 11.2, some parameter versions are not. Check whether alter diskgroup FRA set attribute 'COMPATIBLE.ASM'='11.2';alter diskgroup FRA set attribute 'compatible.advm'='11

> delete expired archivelog all;RMAN> DELETE NOPROMPT ARCHIVELOG ALL COMPLETED BEFORE 'SYSDATE-7' ; You can also use the following statement to delete the archived logs seven days ago. RMAN> DELETE NOPROMPT ARCHIVELOG UNTIL TIME 'SYSDATE-7' ; Note: (it is recommended that you adjust the archiving path or the size of the flashing area after you delete the archive) Solution 2: adjust the size of the flash back area SQL> alter system set db_recovery_file_dest_size =

for these applications than 40g. The formation of several newest Ethernet bandwidth technologies is not to set a new high speed, but more to push such network protocols into nearby markets, especially the data center market. The following describes the specific causes by introducing 25G, 50G, and 100G respectively. 25G The official draft IEEE 802.3 standard for 25G Ethernet will be finalized in 2016 (see figure 1), primarily for cloud data center ser