Entre administradores de SAN es conocido el problema que hay con la compatibilidad entre dispositivos de proveedores diferentes. Por ejemplo, cuando se añade una nueva cabina de discos a una SAN y no funciona el software de multipath en el servidor ya que no estaban en la matriz de interoperabilidad de los fabricantes. Dejaré en este post unas notas relativas a estos problemas.
Definición de Interoperabilidad:
La Interoperabilidad es la condición mediante la cual sistemas heterogéneos pueden intercambiar procesos o datos (Wikipedia ) o la capacidad de los productos de diferentes fabricantes puedan operar conjuntamente (BNET).
En SAN la Interoperabilidad es bastante compleja, cumpliéndose que si toda una red SAN no está en la lista de compatibilidad de hardware/software de los vendedores no operará de la forma esperada. Hace algunos años, el acceder a información de interoperabilidad era un trabajo frustante debido a que no era pública por parte de la mayoría de fabricantes y por lástima en muchos casos usada de forma interesada comercialmente. En la actualidad se ha realizado un gran esfuerzo por la mayoría de ellos, creándose una tendencia cada vez más recia en comunicar esta información, al mismo tiempo que los grandes proveedores de soluciones de almacenamiento se ajustan a estándares para universalizar sus productos y flexibilizar una mayor integración en cualquier entorno heterogéneo cada vez más común.
En almacenamiento hay diferentes organismos para mejorar estos grandes problemas de incompatibilidades entre diferentes proveedores, de forma que establecen estándares y protocolos para una mejor comunicación e integración entre los dispositivos de almacenamiento. Entre todas ellas es destacable el trabajajo que realiza SNIA (Storage Networking Industry Association) cuyo proposito es encabezar en la industria el desarrollo y promoción de estándares, tecnologías y servicios educacionales para apoderar la gestión de información. Todos los grandes fabricantes de almacenamiento son miembros de la SNIA y de forma paulatina va creciendo un marco de interoperatividad entre todos ellos. Aún así, debido al proceso lento de salida y aceptación de estos estándares se realizan de forma independiente muchas alianzas tecnológicas entre diferentes fabricantes que en su mayoría pretenden impulsar propios productos de avanzada tecnología consiguiendo en gran cantidad de casos ser pioneros y mejorar su cartera de productos y especificaciones y por consiguiente competir comercialmente. Forzando que el resto de competidores tecnológicos acepten e integren estas nuevas especificaciones aún no estandarizadas, motivada por esta necesidad de compatibilidad en entornos heterogéneos y para que no penalice su imagen comercial.
A continuación se aportará información junto con enlaces de los proveedores y fabricantes de almacenamiento para el conocimiento de la Interoperabilidad de sus productos con las de otros fabricantes.
Algunas Tablas de Interoperabilidad y HCL ( Listas de compatibilidad Hardware )
Fabricantes
Emulex
Emulex es unos de los líderes en interoperabilidad en SAN, su reputación “It Just Works” se basa en un compromiso con los estándares, abierto al soporte de software y hardware, y al testeo extensivo de interoperatividad.
A continuación se listan sus Tablas de Interoperabiliidad con los siguientes fabricantes :
Información y enlaces procedente de Emulex.
QLogic
QLogic presenta un magnífico trabajo disponible en su web de interoperabilidad al igual que de su historia altamente recomendable disponible en su web, que recopila sus productos, soluciones y servicios que proporcionan, al igual que su certificaciones con distintos proveedores de soluciones SAN. Un documento nada habitual en esta tecnología.
A continuación se listan las Tablas de Interoperabilidad con los siguientes fabricantes :
3PAR | AC&NC | Apple | ATTO Technology | BlueArc | Compellent | Dell | Dell EqualLogic | DNF | Dot Hill | EMC | Enhance Technology | Fujitsu Computer Products of America | Fujitsu Computer Systems | Hewlett-Packard | Hitachi Data Systems | Hitachi Global StorageTechnologies | HP LeftHand SAN (aka LeftHand Networks) | IBM | Infortrend | Intransa | iQstor | iStor | LSI | Matrox | NEC | NetApp | Nexsan | Overland | Pillar | Promise | Qualstar | Quantum | RELDATA | Seagra | SEPATON | Spectra Logic | StoneFly | StoreVault | Sun Microsystems | Symantec | Tandberg Data | Texas Memory Systems | Thales nCipher | Winchester Systems | Xiotech | Xyratex
Información y enlaces procedentes de QLogic.
Brocade – McData
Brocade pone a disposición un documento con la compatibilidad/interoperabilidad de sus productos en la sección de compatibilidad enlazable aquí llamado Brocade Data Center Ready.
Sun Microsystems
Proporciona un listado de soluciones de almacenamiento certificadas con Microsoft en el siguiente documento:
http://www.sun.com/software/windows/storage_cert.pdf
En su sección de almacenamiento y servidores individualmente es completada con tablas de soportabilidad/certificación/interoperatividad de cada dispositivo, y una sección genérica a la Interoperatividad de todos sus productos.
IBM
Presenta una sección de productos para SAN:
http://www-03.ibm.com/systems/uk/storage/san/index.html
Cada dispositivo va acompañado de un documento de Interoperabilidad llamado Interoperability Matrix.
EMC
Proporcionan un documento con las matrices de interoperabilidad en la sección de Interoperabilidad de su portal. Sus clientes pueden utilizar una herramienta de navegación para la interoperabilidad en Powerlink.
HP
Sección de almacenamiento en su portal:
http://welcome.hp.com/country/es/es/leb/storage.html
NETAPP
Sección de Interoperabilidad en su portal:
http://www.netapp.com/us/technology/interop.html
VMWARE
Dispone uns sección para consultas de compatibilidad desde su web con distintos proveedores:
http://www.vmware.com/resources/compatibility/search.php?action=base&deviceCategory=san
Proporciona un documento con las matrices de compatibilidad completa Storage/SAN Compatibility Guide.
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