Adaptec 5325301638 Administration Guide - Page 80
Disaster Recovery Procedural Overview, Maintenance Mode
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Disaster Recovery Procedural Overview Disaster Recovery Procedural Overview The procedures described in this section for responding to a catastrophic event are general in nature and may result in the loss of data. Should such an event actually occur, the exact procedure to follow will vary according to environmental conditions. Snap Appliance strongly recommends you contact a technical service representative before proceeding. This section describes a worst-case scenario: (1) the operating system has failed, perhaps due to a malicious attack to the root file system, and you cannot access the server; and (2) the data has been corrupted and must be restored from tape. When you attempt to connect to the server, the Administration Tool does not appear; instead, the maintenance mode screen opens. Maintenance Mode You will encounter the Snap Server maintenance mode when the GuardianOS has been compromised and is in need of repair or reinstallation. Maintenance mode consists of a series of HTML screens that allow you to perform the following functions: • Reinstall - Reinstalls the GuardianOS, overwriting any previous configurations, and prompts you for the SnapDRImage file • Upgrade/Repair - Either upgrades the GuardianOS from one version to another, or applies the GuardianOSImage but preserves system settings. • Fresh install - Reinstalls the GuardianOS, overwriting any previous configurations Tip To install the GuardianOS, you must obtain the appropriate GuardianOSImage file. This file is available from the Snap Appliance website. Step1: Performing a Fresh Install in Maintenance Mode If the GuardianOS has been compromised, the initial maintenance mode screen will appear when you attempt to connect to the server. Use the following procedure to reinstall the operating system. Caution A fresh install overwrites all data on the Snap Server. Do not perform this operation until all data-recovery attempts have been completed. 1 Download the GuardianOSImage using one of the following methods: • Click Browse to locate and select the file locally. • Enter a remote path (FTP, HTTP, etc.) to the file. 66 Snap Server Administrator Guide