PREVENTIVE PARKING OF HDD HEADS AS A METHOD OF ENSURING DATA INTEGRITY WHEN AUTOMATIC FIRE EXTINGUISHING SYSTEMS ARE ACTIVATED IN SERVER ROOMS

The article discusses the problem of damage to hard magnetic disk drives in the server rooms of data centers caused by intense acoustic effects when automatic gas fire extinguishing and sound alarm systems are activated. The noise level, reaching 130 dB, generates vibrations that lead to physical damage to the disks (the appearance of «dead» sectors) or the software shutdown of devices by controllers due to resonant phenomena. An innovative method of data protection is proposed, based on preventive, synchronized with the operation of the fire extinguishing system, forced parking of the hard disk drive read/write heads in a safe zone. Three technical variations are considered.