Selecciona país
Selecciona idioma
This is a demo of a seamless insert of an Icecat LIVE product data-sheet in your website. Imagine that this responsive data-sheet is included in the product page of your webshop. How to integrate Icecat LIVE JavaScript.

EMC Retrospect 7.5 for Windows Small Business Server Standard Edition

X
Añadir para comparar
Marca:
La marca comercial de un fabricante por el que el consumidor conoce la empresa. Un fabricante puede tener varias marcas. Algunos fabricantes autorizan la utilización de sus marcas a otros fabricantes.
EMC
Nombre del producto:
Nombre del producto es la identificación de un producto de una marca, generalmente conocido como Nombre del modelo, pero es no totalmente único, ya que puede incluir algunas variantes de los productos. Nombre del producto es una parte clave en el título de la ficha técnica del producto en Icecat.
Retrospect 7.5 for Windows Small Business Server Standard Edition
Código del producto :
Identificador único del fabricante para un producto. Varios códigos de productos se pueden asignar a un código de producto original del fabricante si las especificaciones son idénticas. Mapeamos códigos erróneos y a veces variantes logísticos.
RU10A0075
Categoría
Computer programs which store a "backup" (another copy) of your data in case the software/computer closes or crashes unexpectedly.
software de reserva y recuperación
Calidad de la ficha técnica: creada/estandarizada por icecat
La calidad de la ficha técnica puede tener diversos niveles:
solo se ha importado información logística: Solamente contamos con información básica importada desde el fabricante, la ficha técnica no ha sido creada todavía por un editor.
creada por EMC: la ficha técnica ha sido importada desde una fuente oficial del fabricante, pero no ha sido estandarizada todavía por ningún editot de Icecat.
creada/estandarizada por icecat: la ficha técnica ha sido creada o estandarizaa por un editor de Icecat.
En el mercado desde: 13 may 2006
Fecha en la que Icecat nota por primera vez que este producto estáa incluido en la lista de precios de los negocios online.
Este producto ha sido visto: 13388
Esta estadística está basada en los 70105 Sitios ecommerce (tiendas online, distribuidores, mayoristas, sitios de comparación, ecommerce ASPs, sistemas de compra, etc) descargan esta ficha técnica de Icecat 13-05-06 Solamente marcas patrocinadoras están incluidas en el catálogo gratuito Open Icecat, distribuidas y usadas por 68453 usuarios Open Icecat (gratuito).
Información modificada el: 29 mar 2017 11:47:23
La fecha del cambio más reciente de la ficha técnica en el sistema de Icecat.
Más>>>
Descripción corta, sumario EMC Retrospect 7.5 for Windows Small Business Server Standard Edition:
Este corto sumario de la ficha técnica de EMC Retrospect 7.5 for Windows Small Business Server Standard Edition se genera automáticamente y para ello se utiliza el título del producto y las seis características más importantes.
EMC Retrospect 7.5 for Windows Small Business Server Standard Edition, Caja, 5000 MB, Intel Pentium 1.5 GHz, 512 MB, PC, CD
Descripción larga, sumario EMC Retrospect 7.5 for Windows Small Business Server Standard Edition :

EMC Retrospect 7.5 for Windows Small Business Server Standard Edition. Tipo de software: Caja. Espacio mínimo del disco duro: 5000 MB, Procesador mínimo: Intel Pentium 1.5 GHz, RAM mínima: 512 MB. Plataforma: PC, Formatos compatibles: CD, Compatibilidad: SCSI/Fibre Channel/iSCSI/ATAPI/USB/IEEE 1394 tape/CD/DVD drives AIT, DAT, DLT, LTO, Travan, VXA REV,. Sistemas operativos compatibles: Windows Small Business Server 2000, 2003. Versión de idioma: Inglés

Este es un sumario largo autogenarado de EMC Retrospect 7.5 for Windows Small Business Server Standard Edition basado en las tres primeras especificaciones técnicas de los cinco primeros grupos de características.

Gracias por solicitar la actualización de esta ficha técnica por Icecat.

Su ficha tecnica será descrita/corregida en un par de días.

Licencia
Tipo de software
The category of software.
Caja
Cantidad de licencia *
The number of software licenses, which are contracts which allow a business or individual to use a piece of software.
1
Requisitos del sistema
Espacio mínimo del disco duro
The minimum hard disk space required to store or run a computer program or operating system.
5000 MB
Procesador mínimo
The lowest speed that the computer processor can run at, or the minimum amount of processing capacity that can be used, for the computer and particular program(s) to function.
Intel Pentium 1.5 GHz
RAM mínima
The lowest RAM (memory) required to run a computer program or operating system.
512 MB
Plataforma
Plataforma
Description of a technology platform including a processor, chipset, platform software and wired networking capabilities.
PC
Plataforma
Formatos compatibles
The types of media which can be used with this product.
CD
Compatibilidad
The other products, software and hardware this product can be used with.
SCSI/Fibre Channel/iSCSI/ATAPI/USB/IEEE 1394 tape/CD/DVD drives
AIT, DAT, DLT, LTO, Travan, VXA
REV, Zip, DVD-RAM, MO, SuperDisk
Software
Compatible con Mac
Product can be used with Apple Mac software and/or hardware.
Yes
Sistemas operativos compatibles
List of desktop operating systems tested as compatible with this product.
Windows Small Business Server 2000, 2003
Lengua
Versión de idioma *
The version of the language used in software etc. for example English (ENG).
Inglés
Marca Imagen Código del producto producto Stock Precio
EMC Retrospect 7.5 Server Client 1-Pack EMC Retrospect 7.5 Server Client 1-Pack
(show image)
AZ1020075 Retrospect 7.5 Server Client 1-Pack  — 
EMC Retrospect 7.5 Microsoft Exchange Server Agent Upgrade EMC Retrospect 7.5 Microsoft Exchange Server Agent Upgrade
(show image)
AZ24X0075 Retrospect 7.5 Microsoft Exchange Server Agent Upgrade  — 
EMC Upgrade Retrospect 7.5 for Windows Multi Server Edition EMC Upgrade Retrospect 7.5 for Windows Multi Server Edition
(show image)
MZ24A0075 Upgrade Retrospect 7.5 for Windows Multi Server Edition  — 
EMC Upgrade Retrospect for Windows 7.5 Disk-to-Disk Edition EMC Upgrade Retrospect for Windows 7.5 Disk-to-Disk Edition
(show image)
JZ24A0075 Upgrade Retrospect for Windows 7.5 Disk-to-Disk Edition  — 
EMC Retrospect 7.5 for Windows Single Server Edition EMC Retrospect 7.5 for Windows Single Server Edition
(show image)
SU10A0075 Retrospect 7.5 for Windows Single Server Edition  — 
EMC Upgrade Retrospect Client EMC Upgrade Retrospect Client
(show image)
CZ24H6175 Upgrade Retrospect Client  — 
EMC Retrospect 7.5 Server Сlient 1-pack Upgrade Electronic License EMC Retrospect 7.5 Server Сlient 1-pack Upgrade Electronic License
(show image)
AZ2E20075 Retrospect 7.5 Server Сlient 1-pack Upgrade Electronic License  — 
EMC Retrospect 7.5 Open File Backup Unlimited Upgrade EMC Retrospect 7.5 Open File Backup Unlimited Upgrade
(show image)
AZ2460075 Retrospect 7.5 Open File Backup Unlimited Upgrade  — 
EMC Retrospect 7.5 SQL Server Agent EMC Retrospect 7.5 SQL Server Agent
(show image)
AZ10Q0075 Retrospect 7.5 SQL Server Agent  — 
EMC Retrospect® 7.5 for Windows Professional Edition EMC Retrospect® 7.5 for Windows Professional Edition
(show image)
PU10A0075 Retrospect® 7.5 for Windows Professional Edition  — 
EMC Retrospect 7.5 Advanced Tape Support Upgrade EMC Retrospect 7.5 Advanced Tape Support Upgrade
(show image)
AZ24M0075 Retrospect 7.5 Advanced Tape Support Upgrade  — 
EMC Retrospect 7.5 Disaster Recovery Upgrade EMC Retrospect 7.5 Disaster Recovery Upgrade
(show image)
AZ24D0075 Retrospect 7.5 Disaster Recovery Upgrade  — 
EMC Retrospect 7.5 User Initiated Restore Upgrade Electronic License EMC Retrospect 7.5 User Initiated Restore Upgrade Electronic License
(show image)
AZCER0075 Retrospect 7.5 User Initiated Restore Upgrade Electronic License  — 
EMC Retrospect 7.5 Add-on Value Package SBS Electronic License EMC Retrospect 7.5 Add-on Value Package SBS Electronic License
(show image)
AZ11S0075 Retrospect 7.5 Add-on Value Package SBS Electronic License  — 
EMC Retrospect 7.5 for Windows Small Business Server Premium Edition EMC Retrospect 7.5 for Windows Small Business Server Premium Edition
(show image)
TU10A0075 Retrospect 7.5 for Windows Small Business Server Premium Edition  — 
EMC Retrospect 7.5 Disaster Recovery Upgrade Electronic License EMC Retrospect 7.5 Disaster Recovery Upgrade Electronic License
(show image)
AZCED0075 Retrospect 7.5 Disaster Recovery Upgrade Electronic License  — 
EMC Retrospect 7.5 SQL Server Agent Upgrade EMC Retrospect 7.5 SQL Server Agent Upgrade
(show image)
AZ24Q0075 Retrospect 7.5 SQL Server Agent Upgrade  — 
EMC Upgrade Retrospect 7.5 for Windows Single Server Edition EMC Upgrade Retrospect 7.5 for Windows Single Server Edition
(show image)
SZ24A0075 Upgrade Retrospect 7.5 for Windows Single Server Edition  — 
EMC Retrospect 7.5 Client EMC Retrospect 7.5 Client
(show image)
CZ10H6175 Retrospect 7.5 Client  — 
EMC Retrospect 7.5 Add-on Value Package Upgrade EMC Retrospect 7.5 Add-on Value Package Upgrade
(show image)
AZ24T0075 Retrospect 7.5 Add-on Value Package Upgrade  — 
EMC Retrospect 7.5 Advanced Tape Support EMC Retrospect 7.5 Advanced Tape Support
(show image)
AZ10M0075 Retrospect 7.5 Advanced Tape Support  — 
EMC Retrospect 7.5 Server Сlient 1-pack Upgrade + 1yr Support & Maintenance EMC Retrospect 7.5 Server Сlient 1-pack Upgrade + 1yr Support & Maintenance
(show image)
AZ2E20075C Retrospect 7.5 Server Сlient 1-pack Upgrade + 1yr Support & Maintenance  — 
EMC Upgrade Retrospect® 7.5 for Windows Professional Edition EMC Upgrade Retrospect® 7.5 for Windows Professional Edition
(show image)
PZ24A0075 Upgrade Retrospect® 7.5 for Windows Professional Edition  — 
EMC Retrospect 7.5 Add-on Value Package Upgrade Electronic License EMC Retrospect 7.5 Add-on Value Package Upgrade Electronic License
(show image)
AZ2ET0075 Retrospect 7.5 Add-on Value Package Upgrade Electronic License  — 
EMC Retrospect 7.5 Disaster Recovery Electronic License EMC Retrospect 7.5 Disaster Recovery Electronic License
(show image)
AZ11D0075 Retrospect 7.5 Disaster Recovery Electronic License  — 
EMC Retrospect 7.5 Add-on Value Package EMC Retrospect 7.5 Add-on Value Package
(show image)
AZ10T0075 Retrospect 7.5 Add-on Value Package  — 
EMC Retrospect 7.5 Advanced Tape Support Upgrade Electronic License EMC Retrospect 7.5 Advanced Tape Support Upgrade Electronic License
(show image)
AZCEM0075 Retrospect 7.5 Advanced Tape Support Upgrade Electronic License  — 
EMC Retrospect 7.5 Open File Backup 3 Servers EMC Retrospect 7.5 Open File Backup 3 Servers
(show image)
AZ10F0075 Retrospect 7.5 Open File Backup 3 Servers  — 
EMC Retrospect 7.5 Add-on Value Package SBS EMC Retrospect 7.5 Add-on Value Package SBS
(show image)
AZ10S0075 Retrospect 7.5 Add-on Value Package SBS  — 
EMC Retrospect 7.5 Microsoft Exchange Server Agent Upgrade Electronic License EMC Retrospect 7.5 Microsoft Exchange Server Agent Upgrade Electronic License
(show image)
AZ2EX0075 Retrospect 7.5 Microsoft Exchange Server Agent Upgrade Electronic License  — 
EMC Retrospect 7.5 SQL Server Agent Upgrade + 1yr Support & Maintenance EMC Retrospect 7.5 SQL Server Agent Upgrade + 1yr Support & Maintenance
(show image)
AZ2EQ0075C Retrospect 7.5 SQL Server Agent Upgrade + 1yr Support & Maintenance  — 
EMC Retrospect 7.5 Open File Backup Unlimited Electronic License + 1 yr Support & Maintenance EMC Retrospect 7.5 Open File Backup Unlimited Electronic License + 1 yr Support & Maintenance
(show image)
AZ1160075C Retrospect 7.5 Open File Backup Unlimited Electronic License + 1 yr Support & Maintenance  — 
EMC Retrospect 7.5 User Initiated Restore EMC Retrospect 7.5 User Initiated Restore
(show image)
AZ10R0075 Retrospect 7.5 User Initiated Restore  — 
EMC Retrospect 7.5 SQL Server Agent Electronic License EMC Retrospect 7.5 SQL Server Agent Electronic License
(show image)
AZ11Q0075 Retrospect 7.5 SQL Server Agent Electronic License  — 
EMC Retrospect 7.5 Open File Backup Unlimited EMC Retrospect 7.5 Open File Backup Unlimited
(show image)
AZ1060075 Retrospect 7.5 Open File Backup Unlimited  — 
EMC Retrospect 7.5 Server Сlient 1-pack + 1yr Support & Maintenance EMC Retrospect 7.5 Server Сlient 1-pack + 1yr Support & Maintenance
(show image)
AZ1120075C Retrospect 7.5 Server Сlient 1-pack + 1yr Support & Maintenance  — 
EMC Retrospect 7.5 Microsoft Exchange Server Agent Upgrade Electronic License EMC Retrospect 7.5 Microsoft Exchange Server Agent Upgrade Electronic License
(show image)
AZCEX0075 Retrospect 7.5 Microsoft Exchange Server Agent Upgrade Electronic License  — 
EMC Retrospect 7.5 for Windows Multi Server Edition EMC Retrospect 7.5 for Windows Multi Server Edition
(show image)
MU10A0075 Retrospect 7.5 for Windows Multi Server Edition  — 
EMC Retrospect 7.5 Server Сlient 1-pack Upgrade Electronic License EMC Retrospect 7.5 Server Сlient 1-pack Upgrade Electronic License
(show image)
AZCE20075 Retrospect 7.5 Server Сlient 1-pack Upgrade Electronic License  — 
EMC Upgrade Retrospect Client EMC Upgrade Retrospect Client
(show image)
CZ24G6175 Upgrade Retrospect Client  — 
EMC Retrospect for Windows 7.5 Disk-to-Disk Edition EMC Retrospect for Windows 7.5 Disk-to-Disk Edition
(show image)
JU10A0075 Retrospect for Windows 7.5 Disk-to-Disk Edition  — 
EMC Retrospect 7.5 Microsoft Exchange Server Agent Upgrade + 1yr Support & Maintenance EMC Retrospect 7.5 Microsoft Exchange Server Agent Upgrade + 1yr Support & Maintenance
(show image)
AZ2EX0075C Retrospect 7.5 Microsoft Exchange Server Agent Upgrade + 1yr Support & Maintenance  — 
EMC Retrospect 7.5 Add-on Value Package Electronic License EMC Retrospect 7.5 Add-on Value Package Electronic License
(show image)
AZ11T0075 Retrospect 7.5 Add-on Value Package Electronic License  — 
EMC Retrospect 7.5 Add-on Value Package Upgrade + 1yr Support & Maintenance EMC Retrospect 7.5 Add-on Value Package Upgrade + 1yr Support & Maintenance
(show image)
AZ2ET0075C Retrospect 7.5 Add-on Value Package Upgrade + 1yr Support & Maintenance  — 
EMC Retrospect 7.5 Open File Backup 3 Servers Upgrade Electronic License EMC Retrospect 7.5 Open File Backup 3 Servers Upgrade Electronic License
(show image)
AZCEF0075 Retrospect 7.5 Open File Backup 3 Servers Upgrade Electronic License  — 
EMC Retrospect 7.5 Microsoft Exchange Server Agent EMC Retrospect 7.5 Microsoft Exchange Server Agent
(show image)
AZ10X0075 Retrospect 7.5 Microsoft Exchange Server Agent  — 
EMC Retrospect 7.5 Advanced Tape Support Electronic License EMC Retrospect 7.5 Advanced Tape Support Electronic License
(show image)
AZ11M0075 Retrospect 7.5 Advanced Tape Support Electronic License  — 
EMC Retrospect 7.5 Open File Backup Unlimited Electronic License EMC Retrospect 7.5 Open File Backup Unlimited Electronic License
(show image)
AZ1160075 Retrospect 7.5 Open File Backup Unlimited Electronic License  — 
EMC Retrospect 7.5 SQL Server Agent + 1yr Support & Maintenance EMC Retrospect 7.5 SQL Server Agent + 1yr Support & Maintenance
(show image)
AZ11Q0075C Retrospect 7.5 SQL Server Agent + 1yr Support & Maintenance  — 
EMC Retrospect 7.5 Open File Backup Unlimited Upgrade Electronic License EMC Retrospect 7.5 Open File Backup Unlimited Upgrade Electronic License
(show image)
AZCE60075 Retrospect 7.5 Open File Backup Unlimited Upgrade Electronic License  — 
EMC Upgrade Retrospect 7.5 for Windows Small Business Server Premium Edition EMC Upgrade Retrospect 7.5 for Windows Small Business Server Premium Edition
(show image)
TZ24A0075 Upgrade Retrospect 7.5 for Windows Small Business Server Premium Edition  — 
EMC Retrospect 7.5 Advanced Tape Support + 1yr Support & Maintenance EMC Retrospect 7.5 Advanced Tape Support + 1yr Support & Maintenance
(show image)
AZ11M0075C Retrospect 7.5 Advanced Tape Support + 1yr Support & Maintenance  — 
EMC Retrospect 7.5 Advanced Tape Support Upgrade + 1yr Support & Maintenance EMC Retrospect 7.5 Advanced Tape Support Upgrade + 1yr Support & Maintenance
(show image)
AZ2EM0075C Retrospect 7.5 Advanced Tape Support Upgrade + 1yr Support & Maintenance  — 
EMC Retrospect 7.5 Client EMC Retrospect 7.5 Client
(show image)
CZ10G6175 Retrospect 7.5 Client  — 
EMC Upgrade Retrospect 7.5 for Windows Small Business Server Standard Edition EMC Upgrade Retrospect 7.5 for Windows Small Business Server Standard Edition
(show image)
RZ24A0075 Upgrade Retrospect 7.5 for Windows Small Business Server Standard Edition  — 
EMC Retrospect 7.5 Disaster Recovery EMC Retrospect 7.5 Disaster Recovery
(show image)
AZ10D0075 Retrospect 7.5 Disaster Recovery  — 
EMC Retrospect 7.5 SQL Server Agent Upgrade Electronic License EMC Retrospect 7.5 SQL Server Agent Upgrade Electronic License
(show image)
AZ2EQ0075 Retrospect 7.5 SQL Server Agent Upgrade Electronic License  — 
EMC Retrospect 7.5 User Initiated Restore Electronic License EMC Retrospect 7.5 User Initiated Restore Electronic License
(show image)
AZ11R0075 Retrospect 7.5 User Initiated Restore Electronic License  — 
EMC Retrospect 7.5 Add-on Value Package SBS Upgrade Electronic License EMC Retrospect 7.5 Add-on Value Package SBS Upgrade Electronic License
(show image)
AZCES0075 Retrospect 7.5 Add-on Value Package SBS Upgrade Electronic License  — 
EMC Retrospect 7.5 Open File Backup Unlimited Upgrade + 1 yr Support & Maintenance EMC Retrospect 7.5 Open File Backup Unlimited Upgrade + 1 yr Support & Maintenance
(show image)
AZ2E60075C Retrospect 7.5 Open File Backup Unlimited Upgrade + 1 yr Support & Maintenance  — 
EMC Retrospect 7.5 Server Сlient 1-pack Upgrade EMC Retrospect 7.5 Server Сlient 1-pack Upgrade
(show image)
AZ2420075 Retrospect 7.5 Server Сlient 1-pack Upgrade  — 
EMC Retrospect 7.5 Disaster Recovery + 1yr Support & Maintenance EMC Retrospect 7.5 Disaster Recovery + 1yr Support & Maintenance
(show image)
AZ11D0075C Retrospect 7.5 Disaster Recovery + 1yr Support & Maintenance  — 
EMC RetrospRetrospect 7.5 Add-on Value Package Upgrade Electronic License EMC RetrospRetrospect 7.5 Add-on Value Package Upgrade Electronic License
(show image)
AZCET0075 RetrospRetrospect 7.5 Add-on Value Package Upgrade Electronic License  — 
EMC Retrospect 7.5 Add-on Value Package + 1yr Support & Maintenance EMC Retrospect 7.5 Add-on Value Package + 1yr Support & Maintenance
(show image)
AZ11T0075C Retrospect 7.5 Add-on Value Package + 1yr Support & Maintenance  — 
EMC Retrospect 7.5 Open File Backup Unlimited Upgrade Electronic License EMC Retrospect 7.5 Open File Backup Unlimited Upgrade Electronic License
(show image)
AZ2E60075 Retrospect 7.5 Open File Backup Unlimited Upgrade Electronic License  — 
EMC Retrospect 7.5 Microsoft Exchange Server Agent + 1yr Support & Maintenance EMC Retrospect 7.5 Microsoft Exchange Server Agent + 1yr Support & Maintenance
(show image)
AZ11X0075C Retrospect 7.5 Microsoft Exchange Server Agent + 1yr Support & Maintenance  — 
EMC Retrospect 7.5 Open File Backup 3 Servers Electronic License EMC Retrospect 7.5 Open File Backup 3 Servers Electronic License
(show image)
AZ11F0075 Retrospect 7.5 Open File Backup 3 Servers Electronic License  — 
EMC Retrospect 7.5 User Initiated Restore + 1yr Support & Maintenance EMC Retrospect 7.5 User Initiated Restore + 1yr Support & Maintenance
(show image)
AZ11R0075C Retrospect 7.5 User Initiated Restore + 1yr Support & Maintenance  — 
EMC Retrospect 7.5 Disaster Recovery Upgrade + 1yr Support & Maintenance EMC Retrospect 7.5 Disaster Recovery Upgrade + 1yr Support & Maintenance
(show image)
AZ2ED0075C Retrospect 7.5 Disaster Recovery Upgrade + 1yr Support & Maintenance  — 
EMC Retrospect 7.5 Disaster Recovery Upgrade Electronic License EMC Retrospect 7.5 Disaster Recovery Upgrade Electronic License
(show image)
AZ2ED0075 Retrospect 7.5 Disaster Recovery Upgrade Electronic License  — 
EMC Retrospect 7.5 Add-on Value Package SBS + 1yr Support & Maintenance EMC Retrospect 7.5 Add-on Value Package SBS + 1yr Support & Maintenance
(show image)
AZ11S0075C Retrospect 7.5 Add-on Value Package SBS + 1yr Support & Maintenance  — 
EMC Retrospect 7.5 Server Client 1-Pack Electronic License EMC Retrospect 7.5 Server Client 1-Pack Electronic License
(show image)
AZ1120075 Retrospect 7.5 Server Client 1-Pack Electronic License  — 
EMC Retrospect 7.5 Microsoft Exchange Server Agent Electronic License EMC Retrospect 7.5 Microsoft Exchange Server Agent Electronic License
(show image)
AZ11X0075 Retrospect 7.5 Microsoft Exchange Server Agent Electronic License  — 
EMC Retrospect 7.5 Advanced Tape Support Upgrade Electronic License EMC Retrospect 7.5 Advanced Tape Support Upgrade Electronic License
(show image)
AZ2EM0075 Retrospect 7.5 Advanced Tape Support Upgrade Electronic License  — 
EMC Retrospect 7.5 Open File Backup 3 Servers + 1yr Support & Maintenance EMC Retrospect 7.5 Open File Backup 3 Servers + 1yr Support & Maintenance
(show image)
AZ11F0075C Retrospect 7.5 Open File Backup 3 Servers + 1yr Support & Maintenance  — 
EMC Retrospect 7.5 SQL Server Agent Upgrade Electronic License EMC Retrospect 7.5 SQL Server Agent Upgrade Electronic License
(show image)
AZCEQ0075 Retrospect 7.5 SQL Server Agent Upgrade Electronic License  — 
X