Single redundant disk

Lecture Advanced computer architecture: Lesson 33. The main topics covered in this chapter include: operating system interface, parity check code, hamming code, redundant array of independence disk, CRC generator based on the polynomial, performance of RAID levels,...

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Greenplum Database is architected to have no single point of failure. Internally the system utilizes log shipping and segment-level replication to achieve redundancy, and provides automated failover and fully online “self-healing” resynchronization. The system provides multiple levels of redundancy and integrity checking. At the lowest level, Greenplum Database utilizes RAID-0+1 or RAID-5 storage to detect and mask disk failures.

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RAID , or Redundant Array of Independent Disks, allows a group, or array , of drives to act as a single device. RAID, hoặc Redundant Array of Independent Disks, cho phép một nhóm, hoặc mảng, các ổ đĩa để hoạt động như một thiết bị duy nhất. Configure any RAID functions provided by the mainboard of your computer, or attached controller cards, before you begin the installation process. Each active RAID array appears as one drive within Fedora.

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