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Virtualización de Librerías de Cintas

Desde la bajada  del precio de los discos, las soluciones de copias de seguridad y recuperación de desastres en los Centros de Datos estan cambiado. La forma tradicional para mantener copias de los datos de nuestros Data Centers ha sido durante décadas sobre cintas magnéticas. Los discos, en la actualidad por precio,  mejoras en consumo eléctrico, rendimiento y aumento descomunal de su capacidad, auguran la muerte del soporte magnético que tantas décadas han puesto nuestros datos a buen recaudo. Paralelamente durante estos años se ha desarrollado  un software que garantiza la eficacia y el éxito de las copias, automatizando dichas tareas de forma desanvmwaretendida. La calidad del software de gestión automática de backup y recuperación de desastres se ha convertido en un amortiguador de migración de soportes. Con la reciente aparición de soluciones tipo VDR/SRM en los entornos virtualizados de VMWARE nos podemos hacer una idea del futuro próximo de las fórmulas de backup y contingencia que encontraremos. En la actualidad los grandes proveedores  de almacenamiento nos proponen un modelo híbrido que incluyen una de las soluciones software de administración automática de copias de seguridad tales como Netbackup, Legato o TSM pero sustituyendo las clásicas librería de cintas por homólogos virtulizados  llamados VTL (Virtual Tape Library), que a su vez pueden convivir con las clásicas proporcionando mejoras sustanciales en las ventanas de copias. Estas librerías de cintas virtuales son servidores que disponen de targets de fibra óptica, iscsi (o cualquier protocolo de almacenamiento ej. SAS) emulando a nivel software librerías y lectores de cintas estándares y dialogan como tales con los administradores software de copias de seguridad, con la diferencia que la información es guardada en discos. De esta forma se consigue desde la administración de los sistemas de copias de seguridad tradicional que la migración de soporte, magnético a disco, no cambie, disfrutando de las virtudes de este software clásico de administración junto con otras de las excelencias que tiene esta migración, el incremento de velocidafalconstored de la copia y restauración. Éste modelo híbrido en una solución ideal, implementándose desde hace tiempo con éxito en muchos centros de datos, ejemplo de ello son las VTLs de FalconStore . Desde Almacenamiento Abierto, vamos a dedicar una sección a estos entornos virtualizados, aprendiendo como implementar una solución Open Source e integración con un software clásico de backup.

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  22. […] VTL 1 – Virtualización de librerías de cintas –> Breve introducción a las librerías de cintas virtuales […]

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