Am I missing something here... ? It was my understanding that with a RAID setup, it was possible to increase performance (not taking into account reliability) above that of a single disk. Let's say I ...

FreeBSD 基金会宣布了 ZFS 的一项新特性：RAID-Z Expansion。 根据介绍，此功能可以对现有的数据进行重新排列 (reflow) —— 本质上是将数据重写到一个新的磁盘阵列上，即在原来的组加上一个新增加的磁盘。此操作会在逻辑 RAID-Z 组的末尾创建一个新的相邻空闲空间块 ...

A mirror only lets you use one disk in a stack in usable space (50%, or less if for some reason you want a double redundant mirror, i.e. three disks). A RAID-Z ...

Last week frequent contributor _dietrich drew everyone's attention to a piece by Timothy Morgan comparing various low to mid range Unix and Windows servers from a "bang for the buck" perspective. It's ...

目前的RAID存储行业标准是RAID-6，其主要特点在于双驱动器故障时的恢复。但是对于日渐增长的磁盘空间来说，其还不够好，这一技术延长了磁盘故障重建时间，如果第三块盘在双盘驱动器故障恢复完成前也坏掉的话其还可能导致恢复窗口时间延长。 这一点由 ...

Pick the wrong RAID level, and you might end up losing all your data ...

Everybody says you need RAID 0 for speed. You don't.