![]() ![]() RAID 5 (Striped with Parity): This level stripes data across multiple drives, like RAID 0, but also includes parity information. ![]() While this ensures redundancy (a single drive can fail without data loss), it doesn't improve performance. RAID 1 (Mirroring): Data is duplicated across two or more drives.RAID 0 (Striping): This level divides data across multiple drives, enhancing performance due to parallelism but offering no redundancy.Here's a brief rundown of some of the more prevalent RAID levels: There are several RAID configurations, commonly referred to as "levels." Each level offers a distinct balance of performance, redundancy, and storage capacity. The primary objective behind RAID is to enhance the resilience, performance, or both, of data storage. Select Recovery HD from the Startup Manager.įor detailed information on this update, please visit: About OS X Recovery Disk Assistant.RAID, an acronym for Redundant Array of Independent Disks (or historically, Redundant Array of Inexpensive Disks), is a data storage virtualization technology that integrates multiple physical hard drives into a single logical unit. To access OS X Recovery, reboot the computer while holding the Option key. When the OS X Recovery Disk Assistant completes, the new partition will not be visible in the Finder or Disk Utility. Insert an external drive, launch the OS X Recovery Disk Assistant, select the drive where you would like to install, and follow the on screen instructions. To create an external OS X Recovery, download the OS X Recovery Disk Assistant application. Note: In order to create an external OS X Recovery using the OS X Recovery Assistant, the Mac must have an existing Recovery HD. ![]() The OS X Recovery Disk Assistant lets you create OS X Recovery on an external drive that has all of the same capabilities as the built-in OS X Recovery: reinstall Lion or Mountain Lion, repair the disk using Disk Utility, restore from a Time Machine backup, or browse the web with Safari. Built right into OS X, OS X Recovery lets you repair disks or reinstall OS X without the need for a physical disc. ![]()
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