best raid for backup

Raid 10: Make at least four hard disks into RAID 1. If there are four hard disks, there will be two to rand1 disks. If there are eight hard disks, there will be four to raid 1 disks, the biggest purpose of raid1 is to ensure high data security and high read/write speed, but to sacrifice half of the disk space. If the number 12345678 is written to a request, the w

comparison, the speed-up effect is obviously undoubtedly.3, the disadvantage of RAID 0 is not to provide data redundancy, so once the user data corruption, the corrupted data will not be restored.4, RAID 0 has the characteristics, making it particularly suitable for high performance requirements, and the data security does not care about the field, shaped workstations. For individual users,

I am engaged in DBA-related work, recently encountered the IO jitter with shread running jitter situation, host downtime restart backup library and downstream analysis Binlog binlog damage cases, to some experienced colleagues consulting learning, the biggest suspect is: Raid card problem, Take you into the world of RAID cards today What is a

Server RAID 5 Data recovery caseThis shared case is a RAID disk array in a server, with 12 disks in the disk array, a single-disk capacity 500g,ext3 file system, and a Linux platform for the system platform. Raid in 2nd and 6th, two hard disks reported yellow lights, management personnel after the check on the 6th plate has been forced on-line operation, forced o

performance requirements of these files, and then do the corresponding RAID level array according to the performance requirements. The following are the types of files involved in Oracle and the RAID levels we recommend, and explain the reasons for the recommendation: File type Recommended RAID levels Recommended reasons Control f

A. RAID Technology detailedRAIDis Englishredundant Array of independent Disksthe abbreviation, translated into Chinese means"Redundant array of independent disks", sometimes referred to as a disk array (Disk Array). Simply put, RAID is a combination of multiple separate hard disks (physical hard disks) in different ways to form a hard disk group (logical hard disk), providing higher storage performance tha

. Because multiple disk drives are used, the average failure time is prolonged, and repeated backup can also increase data fault tolerance.　　 RAID 0 disks are stored in parallel. This indicates that the data to be written to the array is first divided into blocks, and then the data blocks are written to different member disks in the array, this method provides high I/O access efficiency at a low cost, but i

RAID 0 RAID 0 is also called a zone set. It concatenates more than two disks to form a large-capacity disk. When data is stored, segments are distributed and stored in these disks. Because read/write operations can be performed concurrently, RAID 0 is the fastest speed at all levels. However, RAID 0 has neither redunda

Tags: restart create hard disk tail SHA support No disk array UIDI. LVM vs. RAID features LVM RAID LVM for dynamic capacity expansion RAID supports dynamic capacity expansion LVM does not support disk acceleration RAID supports disk acceleration

broken, so RAID-6 required at least 4 hard drives.650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/72/67/wKiom1XisMXRMwGPAAGJzP3jIjo763.jpg "title=" 1_ 120629202706_1.jpg "alt=" Wkiom1xismxrmwgpaagjzp3jijo763.jpg "/>RAID 7:The raid 7 full name is called "Optimized asynchrony for high I/O Rates as well as higher data Transfer Rates (the most optimized a