xenserver snapshot

What do you do if you want to analyze data in the database at a specific time? For example, what measures do you take if you want to analyze the data at pm? The most frequently used method is to create a scheduled task, perform a backup at, and back up the current database to the server with a new name, then, analyze the data in the backup database. The problem is that if the database is large, it will take a lot of time and disk space to back up. If you need to back up data during peak hours, i

Brief introductionRecent work on data backup uses two tools, one DD, and the other a snapshot of LVM (snapshot). Because the data is large, the direct use of DD is very time-consuming, and LVM snapshots can be easily done in a few seconds, and can achieve real-time results, but the cost of using LVM snapshots is to exchange space for time.Let's start by understanding the following principles:The

This article is first published in the dark world. I have been learning about LVM logical volumes for some time. The previous articles introduced the basic knowledge about LVM logical volumes, including logical volume and volume group resizing. Today, we will introduce the LVM snapshot feature. Note: This experiment is integrated with the virtualization KVM to check whether the KVM virtual machine is started properly and whether the LVM is backed up a

What do you do if you want to analyze data in the database at a specific time? For example, what measures do you take if you want to analyze the data at pm? The most frequently used method is to create a scheduled task, perform a backup at, and back up the current database to the server with a new name, then, analyze the data in the backup database. The problem is that if the database is large, it will take a lot of time and disk space to back up. If you need to back up data during peak hours, i

I have recently studied the snapshot-related knowledge of VMware and made a record and share it here. First, we will briefly introduce the snapshots. A snapshot preserves the state and data of a virtual machine at a special point in time. 1) the snapshot stores the power state of the VM at a specific time point; 2) there is data. For example, the memory informati

ActiveDirectory snapshot management through the ActiveDirectory snapshot function, we can easily see the information in the original AD before recovering the AD information, such as users, groups, OU and other information. Next we will do it. ActiveDirectory snapshot management through the ActiveDirectory snapshot func

maven Best Practices: Version Management Blog Category:MAVEN MAVEN Configuration Management project management SVN Subversion What is version management First, versioning (version management) does not refer to versioning (version control), but this article assumes that you have basic knowledge of versioning and understand the basic uses of subversion. Version management refers to the version of the component (artifact), but not the source version (such as the common rxxx in subversion, or git

Introduction to Multi-snapshot features:The meaning of a snapshot: a mirror with a read-only attribute for a particular file system at a specific time. You can use the snapshot feature when you need to return to a system state repeatedly and do not want to create more than one virtual machine. In fact, snapshots are notVMware Workstation 5of new features. Back in

A site snapshot is a cached page that is not able to open a search result, or that is displayed at a particularly slow speed. Baidu snapshot features only temporarily cache the text content of the page, each page will automatically generate snapshots, and there may be more than one snapshot text. And when the Web server temporarily applauded or network traffic ja

Baidu snapshot of the site is the homepage in Baidu Search engine on a Web page cache, we are engaged in website construction and site optimization personnel to focus on the object of reference. In fact, Baidu snapshots can be used as a barometer of our website optimization, can to some extent reflect the current site in what kind of state. As a website seoer, it is necessary to constantly observe the update of Baidu

Baidu Snapshot, a very familiar noun. Countless webmaster for Lao age, and even sleepless, then, Baidu Snapshot, in the end what is the significance of it? On the network for these are also different opinions, most of the webmaster is very concerned about the snapshot time, that the faster the update, the snapshot of t

In transaction replication, the snapshotSnapshotagent reads the article information and places the content and scripts of the article in the snapshot folder. Then, the distributionagent reads these snapshot files, transfers them to the subscription, and completes initialization. During this period, the distributionagent needs to handle many tasks, such as determining whether a

I accidentally heard about the snapshot of the oracle database. I was stunned when I first heard it. I didn't know what it was, and I spent some time studying it, the following is my summary on network learning. Snapshots are mainly used in distributed databases. We have database A and table A in database a. We need to use the data in Table A in database B, at this time, we can create A snapshot of database

Accidentally heard of the Oracle database snapshot, the word I had a listen to be stunned, do not know what this is, and then spent a little time to study the next, the following is my summary of learning through the network Snapshots are primarily for distributed databases, we have a table A in database a,a, we use data from table A in database B, so we can create a snapshot of database A in database B, w

In the Friendship link exchange, the webmaster has reached a consensus, often take snapshots within 3 days for the principle of exchange. Why not? Snapshot 3 days did not get the search engine update site, is not the right to drop is the majority of low weight sites, not to mention rankings. But does the snapshot really determine the ranking and weight of the site? In the front row of some keywords, there m

SnapshotHyper-V provides the ability to take a captured snapshot of a virtual machine in a row, so it can be easily recovered to the previous state, which is useful for testing environments.The function of a snapshot is very good, but every time a snapshot is taken, it consumes the same amount of hard disk resources, especially the current

　　Aliyun How to create a snapshot You can easily create snapshots of instances, retain the state of the system data at a point in time, either as a data backup, or as a mirror. Description Avoid snapshot creation at the peak of your business. Creating a snapshot of a disk can reduce the performance of the disk slightly. The immediate impact on you is that your

ThesnapshotcontrolfileisatemporarysnapshotcontrolfilethatRMANcreatestore-synchronizefromaread-consisten The snapshot control file is a temporary snapshot control file that RMAN creates to re-synchronize from a read-consisten The snapshot control file is a temporary snapshot control file that RMAN creates to re-synch

Enable backup of files on HDFs via snapshotAPI address please see http://archive.cloudera.com/cdh5/cdh/5/hadoop-2.5.0-cdh5.2.0/hadoop-project-dist/hadoop-hdfs/HdfsSnapshots.html==========================================================================================1. Allow snapshot creationFirst, execute the command below the folder where you want to make the backup, allowing the folder to create a snapshotHDFs Dfsadmin-allowsnapshot Example: HDFs D

Oracle snapshot standby database's scheduler jobs are not executed In Oracle 11g, the snapshot backup snapshot standby database feature of data guard is more suitable for rapid deployment of a temporary test database that is the same as the online environment. For the construction method, see :. recently, it was found that the scheduler jobs of the