Recently, there was a post on this list about loss of data with VXA drives if the power is cycled while a tape is in the drive. Some of the statements in that post were incorrect. One very important correction: VXA tape drives DO have the capability to recover data after a power loss. This is an explanation from the Ecrix technical support team of exactly how this works. HOW DO MOST DRIVES HANDLE POWER LOSS? With most tape backup devices, a loss of power means a loss of data. If power is lost during a write operation a tape drive will not have a proper end of data marker which defines where the current backup finished. This separates new and old data. When the 'power loss' tape is read a fatal error may occur when a tape drive crosses the boundary between new and old data. HOW DOES VXA HANDLE POWER LOSS? If a VXA drive is powered off in the middle of a write operation, it can still recover the data. It does this by correcting the data format to take into account the absence of an end of data marker. This will allow reading of the tape up to the point where power was lost. However, the drive must go through a recovery process to determine where the boundary between new and old data. You can expect 1-4 hours before the drive comes ready. With firmware of V2848 or lower the middle (rectangle) LED would blink. With V2959 firmware the right arrow will blink green/yellow indicating a format recovery is underway. HOW DOES VXA HANDLE OTHER INTERRUPTIONS? If a write operation stops sending data to the tape drive for 10 minutes the drive will write a 'pseudo' end of data marker and then reposition itself to the back side of the last block of data that was just written. This way the tape can be read with no problems. A WORD OF CAUTION All this being said, it is NOT a good idea to power off ANY tape drive with a tape still in the drive. The best protection for your data is to remove the tape before powering off your drive. If you are having difficulties with any tapes caused by a power interruption, please contact us at [EMAIL PROTECTED] - Frank Saab [EMAIL PROTECTED] Ecrix -- ---------------------------------------------------------- To subscribe: [EMAIL PROTECTED] To unsubscribe: [EMAIL PROTECTED] Archives: <http://list.working-dogs.com/lists/retro-talk/> Search: <http://www.mail-archive.com/retro-talk%40latchkey.com/> For urgent issues, please contact Dantz technical support directly at [EMAIL PROTECTED] or 925.253.3050.