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Download Advanced Deploy VMware vSphere 7.x Exam Exam Dumps
NEW QUESTION 49
You have been asked to create a new datastore for the Production cluster; however, the ESXi host esxi02a is not able to add the datastore. Your storage team has determined that there is nothing incorrect with the storage presentation.
Troubleshoot why host esxi02a is not able to create the datastore. Add the datastore to the host once the proper configuration has been applied, and then reboot the host!
Use the following information to complete this task;
* ESXi host: esxi02a
* Datastore Name: new_datastore
* Datastore target: iSCSI Target
* Datastore LUN: 4
* Reboot the host
Answer:
Explanation:
Cannot create a new datastore from vCenter Server or directly from the vSphere Client Creating a new datastore fails The Add Storage Wizard reports the error: An error occurred during host configuration. Call "HostDatastoreSystem.QueryVmfsDatastoreCreateOptions" for object "ha-datastoresystem" on ESXi "xxx.xxx.xxx.xx" failed. An internal error occurred in the vsphere client.
Cause
This issue may occur if:
The size of the LUN is more than 2TB - 512 bytes. The maximum LUN size in vSphere 4 is 2TB - 512 bytes. For more information on this limitation, see Troubleshooting a LUN that is extended in size past the 2TB/2047GB limit (1004230).
The LUN being presented was used as an RDM earlier and does not have a valid partition table.
The LUN being presented was used as a disk device on an other operating system and does not have a valid partition table.
The LUN contains a GPT partition that cannot be removed.
Resolution
To prevent this issue:
Ensure that the LUN size is less than 2TB - 512 bytes or 2047GB. If the LUN is larger then 2TB - 512 bytes, delete it from your Storage Array and recreate it with a size less than the 2TB - 512 bytes limit.
If the disk was used by another operating system in the past (I.E.: it was an RDM, or Linux, FreeBSD, or other filesystem) or contains a GPT partition, you must delete the partition information.For more information
NEW QUESTION 50
Your storage administrator is concerned about a new application being deployed on virtual machine (SIOCVM) in your vSphere 7.x environment.
You've been asked to create and apply a storage policy to make sure that the SIOCVM virtual machine does not exceed 500 IOPS.
Note: Name the Storage Policy 500IOPSLimit
Answer:
Explanation:
Storage I/O Control v2
Storage I/O Control (SIOC) was initially introduced in vSphere 4.1 to provide I/O prioritization of virtual machines running on a cluster of ESXi hosts that had access to shared storage. It extended the familiar constructs of shares and limits, which existed for CPU and memory, to address storage utilization through a dynamic allocation of I/O queue slots across a cluster of ESXi servers. The purpose of SIOC is to address the 'noisy neighbor' problem, i.e. a low priority virtual machine impacting other higher priority virtual machines due to the nature of the application and its I/O running in that low priority VM.
vSphere 5.0 extended SIOC to provide cluster-wide I/O shares and limits for NFS datastores. This means that no single virtual machine should be able to create a bottleneck in any environment regardless of the type of shared storage used. SIOC automatically throttles a virtual machine which is consuming a disparate amount of I/O bandwidth when the configured latency threshold has been exceeded. To allow other virtual machines receive their fair share of I/O bandwidth on the same datastore, a share based fairness mechanism has been created which now is supported on both NFS and VMFS.
vSphere 5.1 introduced a new SIOC feature called Stats Only Mode. When enabled, it doesn't enforce throttling but gathers statistics to assist Storage DRS. Storage DRS now has statistics in advance for new datastores being added to the datastore cluster & can get up to speed on the datastores profile/capabilities much quicker than before.
Another 5.1 feature was Automatic Threshold Computation. The default latency threshold for SIOC is 30ms. Not all storage devices are created equal so this default was chosen as a sort of "catch-all". There are certain devices which will hit their natural contention point much earlier than others, for example All Flash Arrays, in which case the threshold should be lowered by the user. However, manually determining the correct latency can be difficult for users. This gave rise to the need for the latency threshold to get automatically determined at a correct level for each device. Using the I/O injector modeling of SIOC, peak throughput and corresponding latency of a datastore is measured. The latency threshold value at which Storage I/O Control will kick in is then set to 90% of this peak value (by default). vSphere administrators can change this 90% to another percentage value or they can still input a millisecond value if they so wish.
The default latency threshold for SIOC can be reduced to as low as 5ms.
SIOC V1 Overview
SIOC V1 is disabled by default. It needs to be enabled on a per datastore level, and it is only utilized when a specific level of latency has been reached. By default, the latency threshold for a datastore is set to 30ms, as mentioned earlier. If SIOC is triggered, disk shares (aggregated from all VMDKs using the datastore) are used to assign I/O queue slots on a per host basis to that datastore. In other words, SIOC limits the number of IOs that a host can issue. The more VMs/VMDKs that run on a particular host, the higher the number of shares, and thus the higher the number of IOs that that particular host can issue. The throttling is done by modifying the device queue depth of the various hosts sharing the datastore. When the period of contention passes, and latency returns to normal values, the device queue depths are allowed to return to default values on each host.
SIOC V2 Introduction
Before describing SIOC V2, it should be highlighted that SIOC V1 and SIOC V2 can co-exist on vSphere 6.5. This makes it much simpler when considering upgrades, or migrations between versions. With that in mind, SIOC V2 is considerably different from a user experience perspective when compared to V1. SIOCv2 is implemented using IO Filter framework Storage IO Control category. SIOC V2 can be managed using SPBM Policies. What this means is that you create a policy which contains your SIOC specifications, and these policies are then attached to virtual machines.
Creating an SIOC policy based
Creating an SIOC policy is done is exactly the same way as building a storage policy for VSAN or Virtual Volumes. Select the VM Storage Policy from the vSphere client home page, and from there select the option to create a new VM Storage Policy. VM Storage Policies in vSphere 6.5 has a new option called "Common Rules". These are used for configuring data services provided by hosts, such as Storage I/O Control and Encryption.
Use common rules in the VM storage policy
The first step is to click on the check box to enabled common rules. This will then allow you to add components, such as SIOC, to the policy.
Add Component - Storage I/O Control
In vSphere 6.5, there are two components available for common rules, Encryption and Storage I/O Control. Select Storage I/O Control in this case. Now you can select Normal, High, Low or Custom shares allocation.
This table describes the different Limits,Shares and Reservations associated with each setting:
HIGH
NORMAL
LOW
Limits
100,000
10,000
1,000
Reservation
100
50
10
Shares
2,000
1,000
500
When the policy has been created, it may be assigned to newly deployed VMs during provisioning,or to already existing VMs by assigning this new policy to the whole VM (or just an individual VMDK) by editing its settings. One thing to note is that IO Filter based IOPS does not look at the size of the IO. For example, there is no normalization so that a 64K IOP is not equal to 2 x 32K IOPS. It is a fixed value of IOPS irrespective of the size of the IO.
Custom Allocation
If neither of the values in the Normal, High, Low allocations is appropriate, there is the ability to create custom settings for these values. In a custom setting, IOPS limit and IOPS reservation are both set to -1, implying unlimited. These may be modified as required.
Advanced Options
SchedCostUnit
This is an advanced parameter that was created for SIOC V1 only. SIOC V2 does not have SchedCostUnit implemented. For V1, SchedCostUnit determines the unit size (normalized size) of an IO operation for scheduling, and it is currently a constant value of 32K. This constant value, however, may not satisfy different requirements from different customers. Some customers may want to set this unit size to 4K. Other customers may want to set it up to 256K.
To satisfy these different requirements, SchedCostUnit is now configurable. It defaults to an IO size value of 32K, and allowable values range between 4K to 256K.
The SchedCostUnit dictates how requests are counted. A request with size <= SchedCostUnit counts as a single I/O. Anything greater than SchedCostUnit will be counted as 2 or more requests.
For example, by changing the SchedCostUnit from 32K to 64K, the number of IOPS observed will halve. The size of the IO can be set using the:
"esxcli system settings advanced set -o /Disk/SchedCostUnit -i 65536"
and verified by using the"
"esxcli system settings advanced list -o /Disk/SchedCostUnit"
command. SIOC V2 counts guest IO directly. IOPS will be counted based on IO count, regardless of the IO size.
SchedReservationBurst
When limits are set on VMDKs, requests could have high average latency because the limit was enforced at a high (per request) granularity. This was due to the strict enforcement on a VM getting its share of IOs in interval of 1 second/L, where L is the user specified limit. The issue is more visible in fast storage, such as flash arrays. It was noted that SIOC V2 did not perform well when presented with a "bursty" workload on fast storage.
This SchedReservationBurst setting relaxes that constraint so a VM get its share of IOs at any time during a 1 second window, rather than enforce strict placement of IOs in intervals of 1/L. BURST option is turned-on by default.
SIOC V2 Limitations
In this initial release of SIOC V2 in vSphere 6.5, there is no support for vSAN or Virtual Volumes. SIOC v2 is only supported with VMs that run on VMFS and NFS datastores.
NEW QUESTION 51
A new internal network is required to isolate virtual machines for security analysis. The virtual machine (honeypot-01) should reside on a new virtual standard switch with the ability for all traffic on the switch to be monitored.
Add a new virtual switch to accommodate this requirement and configure (honeypot-01) to reside on this switch.
Use the following information to complete this task:
* ESXi host: esxi0la
* Standard Switch: Create a new Standard Switch
* Physical uplink: NO UPLINK
* Network Label: QUARANTINE
* VLAN: none specified
Answer: A
NEW QUESTION 52
You are tasked to automate the installation and deployment of new host added into your company vSphere cluster using Auto Deploy. Ensure Auto Deploy and Image Builder is set to start automatically every time vCenter Server is restarted. Use the web client and VCSA0la to perform this step.
Confirm that the auto deploy plugin is available in the web interface. You may be required to logout and log back in after enabling the services.
The vCenter server is required to retrieve software from an online depot. You are to use the depot provided below and ensure that Auto Deploy is always running even, with restart of vCenter server.
Name FirstDepot
URL https / / hostupdate.vmware.com/software/VUB/PRODUCTION/main/vmw-depot-index.xml Note: ignore error that you received on cannot connect to depot. This is expected due to vCSA do not have internet connection.
Create a deploy Rule on VCSA0la based on information below. You do not need to apply to any host at this time.
Name: Rule1
Specify Rule to match Vendor: Dell
Check 'Do Not Include Image Profile"
Check 'Do Not Include Host Profile"
Select host location: Choose cluster PROD-A
Answer:
Explanation:
Before you can use vSphere ESXi Image Builder with the vSphere Web Client, you must verify that the service is enabled and running.
Procedure
Log in to your vCenter Server system by using the vSphere Web Client.
On the vSphere Web Client Home page, click Administration.
Under System Configuration click Services.
Select ImageBuilder Service, click the Actions menu, and select Edit Startup Type.
On Windows, the vSphere ESXi Image Builder service is disabled. In the Edit Startup Type window, select Manual or Automatic to enable Auto Deploy.
On the vCenter Server Appliance, the vSphere ESXi Image Builder service by default is set to Manual. If you want the service to start automatically upon OS startup, select Automatic.
If you select the manual startup type, you must start the service manually upon OS startup every time you want to use the service.
(Optional) Click the Start the service icon.
(Optional) If you want to use vSphere ESXi Image Builder with thevSphere Web Client, log out of the vSphere Web Client and log in again.
The Auto Deploy icon is visible on the Home page of the vSphere Web Client.
NEW QUESTION 53
You have just deployed a new vCenter Server Appliance. Vcsa0l
a. and are required to back up to configuration after deployment. To complete this task, perform an unencrypted backup of the vCenter Server Appliance using the following details:
* Use the FTP protocol to backup the appliance
* FTP Server Location: 172.20.10.10/
* FTP Username: administrator
* FTP Password: VMware1!
Note: Make sure you include the / at the end of the Server Location
Answer:
Explanation:
Prerequisites
You must have an FTP, FTPS, HTTP, HTTPS, or SCP server up and running with sufficient disk space to store the backup.
Dedicate a separate folder on your server for each file-based backup.
Procedure
In a Web browser, go to the vCenter Server Appliance Management Interface, https://appliance-IP-address-or-FQDN:5480.
Log in as root.
In the vCenter Server Appliance Management Interface, click Summary.
Click Backup.
The Backup Appliance wizard opens.
Enter the backup protocol and location details.
Option
Description
Backup protocol
Select the protocol to use to connect to your backup server. You can select FTP, FTPS, HTTP, HTTPS, or SCP.
For FTP, FTPS, HTTP, or HTTPS the path is relative to the home directory configured for the service. For SCP, the path is absolute to the remote systems root directory.
Backup location
Enter the server address and backup folder in which to store the backup files.
Port
Enter the default or custom port of the backup server.
User name
Enter a user name of a user with write privileges on the backup server.
Password
Enter the password of the user with write privileges on the backup server.
(Optional) Select Encrypt Backup Data to encrypt your backup file and enter a password for the encryption.
If you select to encrypt the backup data, you must use the encryption password for the restore procedure.
Click Next.
On the Select parts to backup page, review the data that is backed up by default.
(Optional) Select Stats, Events, and Tasks to back up additional historical data from the database.
(Optional) In the Description text box, enter a description of the backup and click Next.
On the Ready to complete page, review the summary information for the backup and click Finish.
The Backup Progress window opens and indicates the progress of the backup operation.
After the backup process finishes, click OK to close the Backup Progress window.
Results
You successfully created a backup file of the vCenter Server Appliance.
NEW QUESTION 54
......
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