FirstDefense-ISR is an Instant System Recovery solution that has been designed for enterprise and mid-range servers and mission critical workstations, running Windows 2000, XP, and Vista operating systems. FirstDefense-ISR functions transparently and allows administrators to quickly restore their systems to any complete predefined configuration. No special hardware is required. Furthermore, you do not require special CMOS, or additional disk partitions to be created. FirstDefense-ISR works on single or multi-partitioned systems, fully supporting RAID 0, 0+1, 5, and/or in clustering environments. FirstDefense-ISR performs full-system backups for the purpose of immediate system recovery. The concept was developed as a result of years of listening to IT professionals concerned about having to deal with non-recoverable Windows blue screens, service pack installs going awry, and critical files becoming corrupted. These occurrences render the system unbootable and data is inaccessible until the problem is repaired. FirstDefense-ISR periodically (and transparently) takes snapshots of the current state of the user?s system and applications software. It has the capability of storing up to ten point-in-time snapshots. Following a system crash, the user can immediately fall back to the most recent and uncorrupted snapshot. This reduces the MTTR to virtually zero and enables users and IT staff to instantly repair system crashes without the loss of productivity that results from extensive downtime. Ability to create and maintain up to 10 \\"point-in-time\\" system snapshots. Each snapshot is bootable with no rebuild required. Differential (changed files only) copy engine for fast snapshot updates. Data Anchoring feature makes data files available to any snapshot that is booted. Ability to create a compressed snapshot using NTFS file compression for a significantly smaller snapshot. Ability to archive snapshots to another device.