000-109 - Virtualization Technical Support for AIX and Linux - v2
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An administrator has installed a new client partition and has used vSCSI to provide the disk for rootvg. The rootvg consists of one single disk, hdisk0, which is provided using a single SAN device presented to a dual VIO server configuration. The client virtual SCSI adapters are vscsi0 and vscsi1The administrator would like to prioritize I/O traffic for vscsi0.Running which command will achieve this?
An administrator is preparing an LPAR for Live Partition Mobility (LPM) and needs to move its storage to external storage. After creating the virtual Fibre Channel adapter on the LPAR, the zoning between the LPAR and the storage is established. What needs to be considered when zoning the storage?
Both WWPNs need to be zoned for the same LUNs for LPM to function properly.
What is the purpose of the Virtual Asynchronous Services Interface (VASI) during Live Partition Mobility?
It is used by the Mover Service Partition to communicate with the Hypervisor.
An administrator is planning to deploy multiple AIX LPARs onto a Power 770. These LPARs will be served with Virtual SCSI storage from a pair of VIO Servers (VIOS). What consideration should be considered with regard to VIOS configuration to ensure suitable performance of the virtualized storage?
Allocate sufficient CPU processing capacity.
An administrator is designing a new system for their existing batch environment. The current system is a POWER5 570 with 16 cores and 128GB of RAM with a single LPAR running AIX 5.3. It takes 12 hours to run their large batch job which is heavily CPU bound on 4 the available CPUs. The new system will be a Power 770 with 16 cores, 128GB of RAM and the LPAR will run AIX 6.1.What should be done to maximize the batch performance?
Disable Simultaneous Multi-threading
An administrator is attempting to remove a virtual adapter from an AIX partition using an HMC running V7R7.2. The DLPAR operation is failing with the following message: "Virtual adapters that are marked as required cannot be dynamically removed from the partition. Please change your adapter selections and try the operation again." How can the administrator remove the virtual adapter while minimizing any downtime?
Modify the last activated partition profile so that the adapter is not required for partition activation and repeat the DLPAR operation.
During the migration of a partition that uses Active Memory Sharing (AMS) the following error is received: HSCLA304: A suitable shared memory pool for the mobile partitions was not found on the destination managed system... Which of the following is the most probable cause?
The source and destination servers have different Logical Memory Block sizes.
An administrator is attempting to configure a new deployment of 56 POWER7 Blades across 4 IBM BladeCenter H chassis. Each blade will be installed with an IVM and 2 LPARs.IVM is installed and the administrator checks that both LHEA ports are reporting a Link State of "Up." 2 LPARs are created and the network traffic balanced by allocating one LHEA port to the first LPAR, the second port to the other. After successfully installing the first LPAR via NIM, the administrator finds the second LPAR fails to netboot. What should the administrator verify on the BladeCenter Chassis?
That a secondary I/O module has been installed and cabled.
An administrator is troubleshooting a network connectivity error on a POWER blade. Checking netstat, the administrator can see that the relevant adapter is "up and running". A ping test to the default gateway times out. Checking on another adapter, connected to the same LPAR, ping works as expected. What needs to be checked?
If the MCS value is correctly sized for the number of LHEAs
An administrator has installed a new HMC and needs remote command line access. The option for "Remote Command Execution" has been selected, but ssh still isn't working. What action must be performed to allow ssh connections?
Add "Secure Shell" to the list of Incoming Protocols in the Firewall Settings.
A system administrator needs to configure a redundant network environment for several AIX and Linux clients on a Power Systems server. Which highly available Virtual I/O server network solution should be used to meet this requirement?
Shared Ethernet Adapter Failover
An administrator is performing a Live Partition Mobility (LPM) operation between two servers managed by different HMCs. While monitoring the performance of the partition, the virtual console window suddenly closes. What is the most likely cause?
The virtual console is a connection to the FSP of the physical server and closes when the LPAR migrates. 6 / 38
An AIX LPAR has a disk drive known as hdisk17. The administrator would like to change the name of the disk to redolog0. Which command will achieve this?
rendev -l hdisk17 -n redolog0
An administrator is using a Power Systems server with a Virtual IO server to host a large number of short-lived development LPARs. All disks are presented using virtual Fibre Channel adapters with NPIV enabled. When trying to create a new LPAR, the following error message is displayed: HSCLA4C5: There are no WWPNs remaining for this managed system that can be assigned to a virtual Fibre Channel adapter. Which action will resolve the error?
Use Capacity On Demand to generate an activation code that provides more WWPNs.
An administrator must remove any installed efixes before attempting to install a new VIO Fix Pack. Which VIO command will advise if any VIO efixes are actually present?
An administrator has configured a system to provide resilient networking through the use of SEA failover. The administrator wants to know if the SEA for one VIO server, ent10, is the active adapter. Which of the following commands could the administrator use to determine the status of ent10?
netstat -cdlistats ent10
A new NPIV VIO client is being built. How can the administrator log all virtual Fibre Channel adapters into the SAN so the WWPNs are visible for disk mapping?
Boot the LPAR from a NIM server and access a maintenance shell.
A partition that uses an LHEA for network connectivity needs to be moved to another managed system. The administrator has the LHEA configured in an Etherchannel with a virtual Ethernet adapter as the backup adapter. When attempting to perform the migration using the Migration Wizard, it fails. What is necessary for the migration to be successful?
The migration must be initiated from the opertaing systems of the mobile partition.
A company wants to migrate an existing x86 Linux CRM and database environment from a large cluster of servers to a Power 750 server. How can they perform this with minimal costs and rapid deployment?
Create virtual LPARs with Linux and install the applications using PowerVM Lx86.
A customer is planning to purchase a fully populated Power 795. There are 65 applications which need to run and all need an AIX 7 environment. The architect is considering whether to use an LPAR for each application or to use a single large LPAR and have a WPAR for each application. What must be considered before creating the environment?
An activation key for LPARs with more than 128 processors is required.
An administrator is designing a new system. Redundancy is critical, and cost must be kept as low as possible. The system planned is a Power 770 with 2 enclosures, each with a 10Gb IVE. It will support 6 dedicated production LPARs, 8 development LPARs, and 2 VIO Servers. Production and development networks must be separate from each other. Which of the following network solutions supports the requirements above?
Utilize the Integrated Virtual Ethernet adapter in each enclosure Allocate 1 logical port from each IVE in each enclosure to each LPAR and VIO Server Configure 802.1Q on each LPAR
After a hardware failure, a VIO server has been restored from a mksysb image on a NIM server. When the VIO server boots, the client LPARs have no network access? What is the cause of this problem?
The VIO server was configured to remain as a NIM client.
To prevent frames being dropped as a result of network congestion on high speed links, IBM recommends enabling the use of pause frame on compatible switches and IVE adapters. Which attribute enables pause frames?
After applying the latest Fix Pack to a VIO server, the administrator finds an issue with the hosted media repository. The lsrep command fails with the following error: "Unable to retrieve repository date due to incomplete repository structure" What is the most likely cause for this error?
The repository was in a loaded state prior to applying the Fix Pack.
A virtual adapter with IEEE 802.1Q enabled for multiple VLANs has been created on a new VIO Server. This has been turned into a Shared Ethernet Adapter (SEA) but the SEA is not passing the tagged traffic to the outside world. Which of the following actions, when taken on the VIO Server, will fix the issue?
mkvdev -vlan ent[Ethernet device] -tagid [VLAN ID] for each PVID.
An architect is desiging a new virtualized POWER7 system. The system will have a number of AIX and Linux LPARs and will be deployed with a logical memory block size of 16MB.Which of the following could be used to determine the amount of memory used by the Hypervisor?
System Planning Tool.
An architect is planning to use an existing NIM server to back up and restore VIO server partitions. In addition to the backup of the VIO Server (VIOS), what is needed to successfully complete a restore operation?
A copy of the volume group structures and a list of device mappings from the VIOS partition.
An architect is considering whether to specify vSCSI or NPIV for the rootvg disks in a new virtualized environment. Storage is to be provided by an IBM San Volume Controller (SVC) and controlled using SDDPCM. Which of the following is an advantage of using vSCSI technology instead of NPIV?
Support for vSCSI devices is included within base AIX, removing the need to install device drivers at the client level.
What will cause a broadcast storm when configuring redundant VIO servers with SEA failover?
The secondary SEA is created before enabling failover on the primary SEA.
A customer wants to compare a number of models within the POWER7 family to determine which is the best fit for their requirements. What centralized source would allow them to compare availability of Capacity on Demand and supported Hot-plug functions?
Facts and Features Report
A dedicated LPAR has two dedicated Fibre Channel HBAs assigned to it. In order to reduce the amount of hardware, the LPAR will be migrated to a currently running VIO server. The administrator collects some server performance from the VIO server and notices that the I/O peaks at 5.5Gbits and runs at an average of 4Gbits per second. The VIO Server runs two dual port 8Gbit FCS cards, so the load is not affected by other LPARS on the VIO Server. Which of the following is the most cost-efficient configuration for the VIO client?
Assign one of the ports in the 8Gbit Fibre Channel HBA, using NPIV directly to the new client partition.
What is the maximum number of clients which can be configured to use a single port on a Host Ethernet Adapter?
While reactivating client LPARs following a scheduled power down, some LPARs have lost visibility to their NPIV-allocated SAN LUNs. On investigation it appears the WWNs have changed on the problem LPARs. What is the most likely cause for the change in WWN?
The virtual Fibre Channel client adapters were dynamically allocated to the LPARs before being added to the partition profile.
A client is planning to purchase a Power 770 with 2 enclosures, and needs to have redundancy for multiple LPARs. Which of these solutions provides the most redundancy for the LPARs at least cost?
Create two VIO servers assigning IVE and HBA adapters from different enclosures. Configure SEA failover on the VIO servers and assign a virtual Ethernet adapter to the LPARs. Assign SAN mapped virtual SCSI disks from each VIO server and use MPIO on the LPARS.
Which of the following are valid outbound communication methods for Call Home using an HMC?
Local Modem VPN connection SSL Internet connection
An architect is designing a new POWER7 implementation consisting of a VIO Server (VIOS) and 6 AIX partitions. AIX partitions need to occasionally access a tape drive for restoration and backup of application data and tape access will not be required by more than on partition at any time. The performance of the solution is not critical and the architect wants to keep the cost to a minimum. Which of the following configurations will address the architects requirements?
Allocate a SAS tape drive to the VIOS partition. Virtualize connections from the tape drive to the AIX clients using vSCSI.
While trying to reject recent updates to the VIOS, an administrator received an error message stating that a file set may not be rejected because a dependent file set is committed. Which command can be used to overcome this error?
updateios -remove <committed_fileset_name>
A Power Systems server is configured with a VIO server and several client LPARs. The administrator wants to use the padmin user to create a script, which will run on the VIO server to back it up to a remote system. Script output must be collected. How can this be achieved?
Create a backup script in /home/padmin Use ssh from a remote system to run the script and capture the output on the remote system.
When many LPARs require large quantities of SAN LUNs, what is a benefit of leveraging NPIV over more traditional vSCSI virtualization?
An administrator would like to use system plans to clone the partition definitions of an existing Power 795 system to a new Power 795. Both systems have the same hardware configuration. When the administrator attempts to deploy the system plan taken from the old system to the new one the 'Deploy System Plan' wizard fails at the hardware validation stage. Which of the following actions would allow the administrator to deploy the system plan from the old system to the new?
Use the System Planning Tool (SPT) to validate and convert the original system plan for deployment.
A secondary site is being deployed for application availability and site failover. Servers of identical model and type have been ordered and delivered to the new location. Additional PowerVM activation keys were obtained for the original location to allow more than 32000 WWNs and enable Active Memory Sharing (AMS). How can the duplicate systems be updated to enable these additional features?
Activation keys are generated for a specific system and must be generated for each new server in the failover site.
A system is being designed with redundant VIO servers which will each support networking and storage for 17 client partitions. What is the minimum quantity of adapters needed to support the networking and storage requirements?
An administrator is trying to perform Live Partition Mobility (LPM) between physical systems managed by the same HMC. The VIO Servers (VIOS) on each physical system are connected to the same SAN. The client LPARs will use virtual SCSI (vSCSI) disks. The SCSI adapter slot numbers are between 11 and 20.Each client LPAR has a unique name. The network used by the client LPARs use Logical Host Ethernet adapters (LHEA).The PowerVM Enterprise edition is being used. No EtherChannel has been configured. Why are LPM activities failing?
This LHEA configuration is not supported for LPM.
Where can an administrator find the implementation process for configuring a Power 795 to run in TurboCore mode?
A systems service processor is being connected to a redundant HMC. Which of the following is required to support DHCP server on dual HMCs?
The two HMCs must be on different subnets.
A number of POWER7 servers have been ordered to replace an existing infrastructure of POWER4 machines. All existing LPARs will be manually recreated on the new machines, preserving the installed operating systems. An administrator is planning to attach the POWER7 machines to the subnet, allowing the LPARs to keep their hostname and IP addresses. The NIM server that will be used to restore the LPARs on the new machines allows its clients it initiate NIM client commands. What needs to be considered to preserve the ability to restore an existing LPAR on the new infrastructure?
NIM client CPU ID validation should be disabled before installation on the new hardware.
Following the reboot of one VIO server (VIOS) in a redundant configuration, a client is showing failed disk paths on some channels. What is the most likely reason the disk paths have failed?
vSCSI and disk attributes vscsi_err_recov, vscsi_path_to & hcheck_interval have not been configured.
What Shared Ethernet Adapter environment can be implemented to prevent client network outages when the Virtual I/O server needs to be shut down for maintenance?
Live Partition Mobility
When trying to suspend an LPAR, the process fails during the validation stage. Which of the following must also be correctly configured in order for this process to successfully complete?
Reserved Storage Device Pool
Requirements for a disaster recovery site are being collected. When considering restoring a VIO Server mksysb to disaster recovery hardware, what is required to ensure automatic virtual device recreation?
LPAR profiles must be accurately recreated on the foreign machine