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56 Cards in this Set
- Front
- Back
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XenServer supports what types of storage?
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Local and remote
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Local storage is tied to what?
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A physical server
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What is shared storage required for?
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XenMotion
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How are fibre channel LUNs displayed to XenServer?
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They appear in the installer for use
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How can bonded NIC help with remote storage?
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improve resiliency by aggregating multiple ports into a single group, combining the bandwith into a single connection.
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By default, what interface does remote storage use?
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The primary management interface
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Once a management interface has an IP address and it dedicated to remote storage, can it be used for any other purpose?
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It cannot be used for any other purpose
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In what ways can a bonded interface work?
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Hot standby, Load balancing and link integrity monitoring
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When is a NIC available?
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Immeidately upon booting if it has an IP address
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What are the four main steps to create a bonded storage NIC?
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Create a NIC bond. Change the bonded interface to maangement mode. Assign an IP address to the NIC bond. Dedicate the IP to remote storage traffic.
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How much the network be configured before configuring a a decicated stroage interface?
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Ensure that the interface is un a sepoerate subnet which is not routable to the main management interface.
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What are the features of XenServer multipathing?
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Allowsa the use of redudant paths to a storage device.
increases availability in case of hardware failure on one of the paths. Is controlled on a per-host basis allowing a varying degrees of support in a resource pool. Is available for all storage repository types that utilize raw LUNs |
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What backend storage supports multipathing?
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Fibre Channel and iSCSI
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What method does mutlipathing use?
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Round robin
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Does mutlipathing benefit from NIC bonding?
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No, they dont stack
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What Fibre channel HBAs are supported?
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Emulex and Qlogic
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Where are the command line scripts stored for Emulex support?
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/usr/sbin/hbanyware
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Where are the command line scripts stored for QLogic?
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/opt/QLogic_Corporation/SANSurferCLI
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Is multipath supported for SAN?
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No
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Direct mapping of a LUN to a VM is supported in what way?
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It's not supported. A LUN must be added to a LVM group.
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What must be done with a LUN to map it to a VM?
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It must be added to a LVM group.
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What software power Xen's access to iSCSI?
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open-iSCSI
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Shared iSCSI support is implemented based on what?
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Linux Volume Manager
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How is the IQN identified assigned to a iSCSI software package?
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Randomly
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IQNs must be?
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Unique
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What is a draw back of software iSCSI?
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They do not handle sparse provisioning or fast closing
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Why would you not be able to fast clone?
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using software iSCSI
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What advantage does a hardware HBA provide?
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off loads CPU cycles from the server to the card
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Where is setup done in a QLogic iSCSI card?
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in the setup of the BIOS
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Where is the QLogic setup script?
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/opt/QLogic_corporation/SANSurferiCLI
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What is an iSCSI initiator?
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A system that connects to iSCSI storage
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What is an iSCSI target?
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an iSCI storage array
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What is an iSCSI LUN?
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A logical drive on an iSCSI array
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When is iSCSI storage setup done?
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After the Xenserver isntallation
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What connection information is required to make an iSCSI connection?
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Array hostname or IP address. iSCSI unique name
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What is required for iSCSI software support?
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Gigabit NIC. XenServer would also need the open-iSCSI initiator
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What are the three key iSCSI best practices for the network?
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Configure a dedicated network for iSCSI network.
Use dedicated NICs on servers. Use dedicated switches and cabling. |
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How should initiator names be configured during setup?
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Allow all initiator names to connect during setup
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What version of NFS is supported for XenServer?
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NFS 3
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In what format are disks stored on NFS?
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Microsoft VHD
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What are the two key advantages of VHD on NFS3?
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Think provisioning and fast cloning
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What is thin provisioning
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virtual disk use only as much space as their is data
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What is a limitation of VHD on NFS?
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Disk sizes cannot be increased
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How would you run a slow clone?
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Using the CLI
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Is snap shotting supposed on NFS/VHD?
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No
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Is think provisioning supported on VHD with NFS?
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Nope
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What is required to use NetApp?
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netApp Ontap 7g version 7 or grreater
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How does Citrix support NetApp features?
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through the XAPI
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What features does XenServer using the XAPI support?
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Thick provisioning, Thin Provisioning, NetApp data dedupplication and Snapshotting uses FlexVol technology
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What is the Xephyr API?
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A driver used to connect to NetApp. It's used to create FlexVols
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What does a FlexVol correspond to?
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Storage Repository
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What is a FlexVol?
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Basic unit of manageable data with NetApp
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What is a best practice concerning NetApp aggrigates and XenServer?
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Configure the aggrigate exlucsively for Xen to manage
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What is the max LUNs for each network FlexVol?
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200
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What is the maximum number of snap shots each flexvol can have?
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255
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What is NetApp Data deduplication technology?
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Disgards replicate blocks of space
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