Term
| What is the function of zoning and LUN masking? |
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Definition
| Access control between different objects |
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Term
| What level is zoning configured on? |
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Definition
| Defines which HBAs can connect to which targets. |
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Term
| What happens to devices which are separated by one being inside and one being outside a given zone |
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Definition
| Any devices that aren't zoned to one another cannot see each othe |
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Term
| T/F: Zoning reduces the number of targets and LUNs presented to a host |
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Definition
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Term
| Name 4 use cases for zoning |
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Definition
1. Reduces the number of targets and LUNs presented to a host
2. Controls and isolates paths in your SAN fabric
3. Prevents non authorized systems (non ESXi hosts) from accessing your targets and LUNs (VMFS datastore)
4. Can be used to separate environments (e.g. test/dev from prod) |
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Term
| What level is LUN masking applied on? |
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Definition
| Host-LUN level. Can be done at the array layer or the VMware layer |
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Term
| What is the function of LUN masking? |
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Definition
| Limits which LUNs a host can see. |
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Term
| Which takes priority: zoning or LUN masking? |
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Definition
| LUN masking. E.g. A host may be zoned to see a specific LUN, however that LUN could be masked out of the host. |
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Term
| Name the four types of storage filter |
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Definition
| VMFS Filter; RDM Filter; Same Host and Transports FIlter; Host Rescan Filter |
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Term
| Which storage filters are enabled by default |
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Definition
| All four storage filters are enabled by default |
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Term
| Describe the function of the VMFS filter |
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Definition
| Filters out storage devices that are already in use by a VMFS datastore or any host managed by vCenter. The LUNS will not show up as candidates to be formatted or to be used by an RDM. |
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Term
| What is the configuration title for the VMFS filter? |
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Definition
| config.vpxd.filter.vmfsFilter |
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Term
| Describe the function of the RDM Filter |
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Definition
| Similar to the VMFS filter, but filters out RDMs. In order for VMs to use the same LUN, they must be setup to share it. |
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Term
| What is the configuration title for the RDM filter? |
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Definition
| config.vpxd.filter.rdmFilter |
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Term
| Describe the function of the Same Hosts and Transports Filter |
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Definition
| Filters out LUNs ineligible for use as a VMFS datastore extent because of host or storage type incomparability. Prevents LUNs not exposed to all hosts sharing the same original VMFS datastore from being an extent. Also prevents LUNs that use different storage type from the original VMFS datastore from being an extent |
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Term
| What is the configuration title for the Same Host Transports Filter? |
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Definition
| config.vpxd.filter.SameHostAndTransportFilter |
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Term
| Describe the Host Rescan Filter |
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Definition
| Automatically rescans and updates VMFS datastores after you perform datastore management operations. Helps to provide a consistent view of datastores across hosts. If this filter is turned off it will not affect presenting a new LUN to a host or cluster. The rescan operation will still go |
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Term
| What is the configuration title for the Host Rescan Filter |
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Definition
| config.vpxd.filter.hostRescanFilter |
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Term
| Where can host filter settings be modified? |
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Definition
| In the vSphere client - Home - vCenter Server settings - Advanced settings and entering their corresponding keys and a True /False value |
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