tailieunhanh - Microsoft Press mcts training kit 70 - 648 server virtualization phần 2

Cố định và tự động mở rộng ổ đĩa cứng ảo được giới hạn kích thước GB mỗi. Tổng số tiền lưu trữ cho mỗi máy ảo bằng cách sử dụng đĩa cứng ảo là 512 terabytes. Kích thước của pass-through đĩa vật lý đĩa trực tiếp liên quan đến máy ảo chỉ được giới hạn bởi hệ điều hành đang chạy trong máy ảo. | REQUIREMENT DESCRIPTION Virtual Hard Disks Fixed and dynamically expanding virtual hard disks are limited in size to 2 040 GB each. The total amount of storage per VM using virtual hard disks is 512 terabytes. The size of pass-through disks physical disks that are directly linked to virtual machines is only limited by the operating system running in the VM. Virtual Storage Controllers Up to four IDE connections per VM. At least one IDE device must be assigned to each VM to boot. Up to 4 SCSI connections per VM and up to 64 devices per SCSI connection for a total of 256 possible disk connections. Virtual Machine Snapshots Each VM can have up to 50 snapshots. Virtual CD DVD Up to three virtual CD DVD devices can be assigned to each VM. One IDE controller must be reserved for the boot device. Only one VM can access the physical or pass-through CD DVD device at a time for security reasons. Hyper-V can also access .iso files as virtual CD DVD devices. Virtual Serial COM Ports Each VM can access up to 2 virtual COM ports to communicate with physical devices either locally or remotely through a serial named pipe. Virtual floppy drive Each VM supports up to 1 virtual floppy drive. Hyper-V does not support access to physical floppy devices. Floppy devices must be in the form of .vfd files. Resource pool Resource pools link host servers together to provide high availability for the VMs they run. Because Hyper-V relies on Windows Server 2008 to create resource pools the maximum number of hosts in a given resource pool is 16 or 16 nodes in a cluster. EXAM TIP HYPER-V CHARACTERISTICS Pay close attention to the items in Table 1-6 they are definitely part of the exam. UPDATE ALERT HYPER-V CHARACTERISTICS Microsoft is constantly updating Hyper-V and other virtualization offerings as they compete with other virtualization vendors. Because of this many of the values in Table 1-6 have been updated to reflect current Hyper-V capabilities. Yet the exam was created based on the original

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