Introdução ao RAID – conhecimento da parte teórica e prática sobre o sistema, diferenciação de redundância para backup, preparação dos discos, particionamento e formatação. Gerenciamento MDADM, RAID 0, RAID 1, RAID 5, RAID 10, LVM2, instalando servidor Debian com LVM2.
Há muitas vantagens na utilização da protecção por paridade de dispositivos RAID, algumas são:
Os dados perdidos são reconstruídos automaticamente pelo adaptador de entrada/saída após uma falha do disco.
O sistema continua em execução após uma única falha em disco.
É possível substituir uma unidade de disco sem parar o sistema.
Existe uma só unidade de disco de capacidade que armazena dados de paridade num conjunto de paridades.
No caso do LVM2 algumas vantagens são:
Fácil administração dos discos
Possibilidade de trabalhar com RAID
Aumentar tamanho de discos com facilidade
Gestão simples e prática
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