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number of users, how to save the user's mail is a very important issue. Traditional UNIX uses a single directory to hold all users ' messages, which greatly reduces the performance of the file system when the number of users is large. Only a multi-level directory, a limited number of files per directory, can reduce the system consumption when opening files, or no longer use simple files to save messages, but in a certain package form. Completely take the database form to save the mail, because

Asaf Yigal is Logz.io's co-founder and vice president of products. Prior to Logz.io, Asaf co-founded Currensee with others, a social trading platform, which was later acquired by Oanda in 2013. Prior to Currensee, Asaf was responsible for managing and developing an End-to-end performance monitoring platform in Akorri, and had developed a storage resource management platform in Onaro. Later, Akorri and Onaro were both bought by NetApp. Prior to Onaro,

When users try to download the use of chrome, only to find chromium version of the numerous, version number is a week upgrade, those chromium, Dev, Beta, stable and other nouns make it difficult to choose which one is suitable for use. In fact, Chrome is an open source browser software that can provide various versions for different system platforms/users. Generally speaking, the earliest release is chromium, after functional improvements and bug fixes can be upgraded in turn to Chrome Dev, Beta

Nowadays, the data de-duplication technology is no longer unfamiliar, and its value has been fully reflected in the backup domain, how to play the maximum value of duplicate data deletion technology is another problem that manufacturers need to think about. The extension of the data de-duplication technology to the primary storage domain (NetApp has pioneered the primary storage application of data deduplication) also gives us a glimpse of the vendors

The De-duplication technology not only improves enterprise storage efficiency, but also reduces the need for storage devices such as tapes or disks, thereby further saving data center space, energy, and cooling resources. In a broad sense, duplicate data deletion is a technology that analyzes data files, finds and deletes redundant blocks of information, and uses compression algorithms such as G-zip or LZ. In general, files that are often edited but rarely changed are ideal for duplicate data d

I. Basic ENVIRONMENTAL requirements System environment: System version: Rhel5u8 x86_64 Oracle Version: Oracle 10.2.1 IP Address ODB1 192.168.100.144 192.168.101.144 ODB2 192.168.100.143 192.168.101.143 Server Shutdown selinux/iptables Second, preparatory work Modify the host name of two computers ODB1 Odb1-priv ODB1-VIP OBD2 Odb2-priv ODB2-VIP Configure Yum source code, to ensure that the data package are fully installed, Oraclerac the most annoying packet, the problem, most of the

Sybase was ruled out by Wall Street in the 90 's and was used by many large companies. Sybase replication can be at the database level (Active/Active replication, better than SQL Server mirroring), transaction level (similar to SQL Server transactional replication), table level, stored procedure level, function level, With MSA (multi-site availability) and through log shipping (the solution for replicating the world's poor), its mirror activator combined with EMC/SRDF can truly guarantee ZDL (0

good way to back up online. A file system that supports snapshots can instantly create a consistent view of the content used to back up. File systems and devices that support snapshots include FreeBSD's file system, ZFS file system, gnu/linux Logical Volume Management (LVM), and many San system and file storage solutions, such as NetApp storage. LVM mode should not be used, look at, do not write.recovering from a backupHow the data is recovered dep

Tags: falconstor CDP databasePreviously did not understand the role of Falconstor CDP, always understand the same image database. When you see the following support topology it is only beginning to doubt the relationship between the Falconstor CDP and the database. So, holding the tangled thought of the day, and finally to help my teacher, he gave me the following explanations:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4A/07/wKiom1QhcdWg8LnRACO70leYi_0830.jpg "title=" Img_ 201409

1 Basic Architecture for NFSThe NFS network File system is also the networked filesystem.NFS was first developed by Sun, 2,3,4 three editions, 2 and 3 were drafted by Sun, and 4.0 began to be involved and led by NetApp, with the latest version of 4.1NFS data transfer is based on the RPC protocol, and RPC is a shorthand for remote Procedure call, which translates to a long-distance procedure invocation.The NFS Application scenario is: A,b,c three machi

1. Use high-speed storage devices to improve reading and writing capabilities such as: EMC and NetApp,2. If there is no data in the TAB1 tableDROP TABLE TAB1;CREATE TABLE TAB1 as SELECT * from TAB2;And then create the index3. Use hint tips to reduce operating timeINSERT/*+append*/into Tab1SELECT * from TAB2;4. Use the hint to reduce the time of data operation without writing logs.The recommended scenario is to modify the table to not write the log fir

accepted by the upstream Linux kernel development teamIn other words: The updated driver (driver) is passed to each updated kernelOn the other hand, if you use a third-party vendor driver, in the new kernel version, there is a new Driver Pack (driver package) corresponding.Third: Boot-from-san support was much easier to setup with Dm-mpioIV: multipathing support available during installation of OSV: Hardware vendors is starting to recommend/support Dm-mpio in certain storage configurationsFor m

to the configuration file is as follows:[[email protected]] #vi/etc/multipath.confBlacklist {Devnode "^SDA"}Defaults {User_friendly_names YesPath_grouping_policy Multibusfailback ImmediateNo_path_retry fail}Save the configuration when editing is complete, and pass the command:[[email protected]]#/ETC/INIT.D/MULTIPATHD Stop[[email protected]]#/ETC/INIT.D/MULTIPATHD Start[[email protected]]# Multipath-llMpatha (360a9800064665072443469563477396c) dm-0 Netapp