Module 6 Lesson 3: Fibre Channel SAN Storage - VMware vSphere 4.1 Study Flash Cards

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ntsyspro
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Module 6 Lesson 3: Fibre Channel SAN Storage - VMware vSphere 4.1 Study Flash Cards
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2012-01-11 13:18:07
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Fibre Channel SAN Storage VMware vSphere Study Flash Cards
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Fibre Channel SAN Storage - VMware vSphere 4.1 Study Flash Cards
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  1. Using Fire Channel with ESX/ESXi

    What is Fibre Channel SAN storage (LUNs) commonly used for? List /name 4 uses.
    • 1. VMFS datastores to hold virtual machines, ISO images, and templates
    • 2. Holding RDMs, which point to a virtual machine's raw data.
    • 3. Remote booting of ESX/ESXi
    • 4. vSphere Distributed services features like vMotion, VMware HA, Storage vMotion, FT and DRS
  2. Using Fibre Channel with ESX/ESXi

    What enables Fibre Channel to support vSphere Distributed services features like vMotion, VMware HA, Storage vMotion, FT and DRS?
    VMFS datastores which can be shared across mutliple ESX/ESXi hosts.
  3. Using Fire Channel with ESX/ESXi

    Installing ESX/ESXi host from a Fibre Channel SAN LUN is not supported? True or False?

    If False, Why?
    False. Installation of ESX/ESXi from a Fibre Channel LUN is supported in addition to local direct attached storage.
  4. Using Fire Channel with ESX/ESXi

    Booting ESX/ESXi host from a Fibre Channel SAN LUN is supported? True or False?

    If False, Why?
    True.
  5. Using Fire Channel with ESX/ESXi

    How must the BIOS of the Fibre Channel adapter be configured to boot from SAN?
    The Fibre Channel adapter must be configured with the World Wide Name (WWN) and LUN number of the boot device.
  6. Using Fire Channel with ESX/ESXi

    How must an ESX/ESXi host's system BIOS be configured to boot from SAN?
    The system BIOS must designate the Fibre Channel adapter as a boot controller.
  7. Using Fibre Channel with ESX/ESXi

    What Fibre storage transport technologies does ESX/ESXi support?
    • 8GB Fibre Channel
    • Fibre Channel over Ethernet (FCoE).
  8. Fibre Channel SAN Components

    Name the components a Fibre Channel SAN consists of.
    • Storage system
    • LUNs
    • Storage processors
    • HBAs (host bus adapters)
    • Fibre Channel switches
  9. Fibre Channel SAN Components

    Define/describe a Fibre Channel SAN storage system.
    Storage system - The hardware that consists of a set of physical hard disks, or disk arrays and one or more intelligent controllers.
  10. Fibre Channel SAN Components

    Define/describe a Fibre Channel SAN LUN.
    LUN - The address of a logical unit (LU). A LU is a unit of storage access. A LU can be a JBOD (just a bunch of disks) or part of a JBOD, a RAID set (also called a storage container), or part of a storage container. Both JBODs and RAIDs can be partitioned into multiple LUNs.
  11. Fibre Channel SAN Components

    Define/describe a Fibre Channel SAN Storage processor.
    Storage processor - A SP can partition a JBOD or RAID set into one or more LUNs. It can restrict access of a particular LUN to one or more server connections. Each connection is referenced by the server HBSs WWN.
  12. Fibre Channel SAN Components

    Define/describe a Fibre Channel SAN HBA.
    HBA - (host bus adapter) Connects the ESX/ESXi host to the Fibre Channel network. It is required along with cables attached to the Fibre Channel switch ports.
  13. Fibre Channel SAN Components

    Define/describe a Fibre Channel SAN Fibre Channel switch.
    Fibre Channel switches - One or more Fibre Channel switches form the Fibre Channel fabric. The Fibre Channel fabric interconnects multiple nodes. The Fibre Channel switches form packets from the Fibre Channel messages and add the source and destination addresses to each packet.
  14. Fibre Channel Addressing and Access Control

    Name the several mechanisms that enable controlling a host's access to LUNs.
    • Zoning ( Soft zoning and Hard zoning)
    • LUN masking
    • WWN (World Wide Name)
  15. Fibre Channel Addressing and Access Control

    Name the two types of Fibre Channel Zoning.
    • Soft zoning
    • Hard zoning
  16. Fibre Channel Addressing and Access Control

    Define/describe Soft zoning.
    Soft zoning is done on a Fibre Channel switch and controls LUN visibility per WWN.
  17. Fibre Channel Addressing and Access Control

    Define/describe Hard zoning.
    Hard zoning is done on a Fibre Channel switch and is the control of SP visibility per switch port.
  18. Fibre Channel Addressing and Access Control

    What does Fabric zoning control?
    Fabric zoning controls target presentation and tells a ESX/ESXi host whether a target exists.
  19. Fibre Channel Addressing and Access Control

    What happen if the ESX/ESXi host cannot get to the target?
    The host cannot see the LUNs.
  20. Fibre Channel Addressing and Access Control

    What is the purpose of using both Hard and Soft zoning?
    To make accidental access to volumes by servers/hosts very unlikely.
  21. Fibre Channel Addressing and Access Control

    Why is Fibre Channel Zoning especially important in environments where physical Winidows servers are accessing a SAN?
    Because Windows operating systems typically write disk signaures on storage volumes that they see. These volumes might, in fact, be in use by non-Windows systems.
  22. Fibre Channel Addressing and Access Control

    Who assigns WWNs (World Wide Names) to SAN equipment?
    WWNs are assigned by the manufacturer of the SAN equipment.
  23. Fibre Channel Addressing and Access Control

    What SAN equipment has WWNs (World Wide Names) assigned to them?
    HBAs and SPs have WWNs assigned.
  24. Fibre Channel Addressing and Access Control

    What are WWNs (World Wide Names) used for?
    WWNs are used by SANs to identify HBAs and SPs for zoning purposes.
  25. Fibre Channel Addressing and Access Control

    SPs or hosts may implement LUN masking. What does LUN masking control?
    LUN masking controls storage/volume visibility.
  26. Fibre Channel Addressing and Access Control

    LUN masking can be done at the ESX/ESXi level or the SP level. True or False?


    If False, Why?
    True. Although LUN masking can be done at the ESX/ESXi level, LUN masking is normally done at the SP level for the sake of security and data integrity.
  27. Fibre Channel Addressing and Access Control

    Why is LUN masking is normally done at the SP rather than the host level?
    LUN masking is normally done at the SP level for the sake of security and data integrity.
  28. Fibre Channel Addressing and Access Control

    In a Fibre Channel SAN what happens if a LUN is masked?
    The SPs do not tell the host that the LUN exists nor do the SPs allow communication/acccess with/to the LUN.
  29. Accessing Fibre Channel Storage

    Once installed, during normal operation, when are Fibre Channel adapters assinged to and recognized by the ESX/ESXi host's VMkernel?
    During the boot sequence. All supported PCI devices (SCSI, Fibre Channel, Ethernet, iSCSI etc...) are assigned to the VMkernel and are recognized by the VMkernel when the ESX/ESXi host boots.
  30. Accessing Fibre Channel Storage

    By default, the VMkernel scans for LUN numbers _ - _ on every target for a total of _ LUNs.
    The VMkernel scans for LUN numbers 0 - 255 on every target for a total of 256 LUNs.
  31. Accessing Fibre Channel Storage

    How can you discover LUNs with a LUN ID number that is greater than 255?
    You cannot discover LUNs with a LUN ID number greater than 255.
  32. Accessing Fibre Channel Storage

    What are the steps to display the list of storage adapters using the vSphere vClient?
    • 1. Select the host in the inventory
    • 2. Click the Configuration tab.
    • 3. Click the Storage Adapters link.
  33. Viewing Fibre Channel Storage Information

    In the vSphere vClient what tab allows you to review associations between all storage entities available in VMware vCenter server and analyze storage usage?
    The Storage Views tab. Use the Storage Views tab to view information about your Fibre Channel storage.
  34. Viewing Fibre Channel Storage Information

    How often are reports available in the host's Storage Views tabe updated?
    Reports are updated every 30 minutes.

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