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Total 116 questions
A composite group spanning two Symmetrix arrays is set up to run SRDF/Star using
Cascaded SRDF as shown in the exhibit.
What is one of the necessary conditions before an MSC cycle switch is performed at Site
B?
- A. Transmission of delta sets from Site B to Site C has finished
- B. SDDF bitmaps have been swapped at Site A
- C. Invalid track count between Sites A and C must be under 30000
- D. SYMCLI_STAR_ALLOW_CASCADED_CONFIGURATION option must be enabled in the option file
Answer : A
A storage administrator has presented thin LUNs to a vSphere cluster from an EMC
Symmetrix VMAX array. The vSphere administrator then uses those thin LUNs to create
VMFS partitions to store virtual disks. When the vSphere administrator creates new virtual machines, a new 100 GB virtual disk was also created.
The virtual disks use 100 GB even though an operating system has not been installed on the guest. Why are the virtual disks using 100 GB of actual array space once they are created and before any data is put on them?
- A. Virtual disks have been formatted “Eagerzeroedthick”
- B. Virtual disks have been formatted “Zeroedthick”
- C. Virtual disks have been formatted “Thin” and zeroed on demand
- D. vmkfstools was not used to format the disks
Answer : A
You are performing a migration from DAS-based Microsoft SQL Servers to an EMC
Symmetrix VMAX. In order to assure the highest levels of performance and availability, you ensure that all EMC best practices are followed.
In order to protect the database volumes from having write pendings being overwritten by new writes to the same area in global memory, which array setting should be configured?
- A. Generic Write Safe
- B. Symmetrix device lock
- C. Double checksum
- D. Enginuity Consistency Assist
Answer : A
Refer to the Exhibit.
What is the connectivity recommendation when an ESXi server is connected to a two- engine Symmetrix VMAX array over an FC SAN?
- A. HBA 1 to Port E0 on Even (8) Director HBA 1 to Port E0 on Even (10) Director HBA 2 to Port E0 on Odd (7) Director HBA 2 to Port E0 on Odd (9) Director
- B. HBA 1 to Port E0 on Odd (7) Director HBA 1 to Port E0 on Even (8) Director HBA 2 to Port G0 on Odd (7) Director HBA 2 to Port G0 on Even (8) Director
- C. HBA 1 to Port E0 on Odd (7) Director HBA 1 to Port E1 on Odd (7) Director HBA 2 to Port G0 on Even (10) Director HBA 2 to Port G1 on Even (10) Director
- D. HBA 1 to Port E0 on Odd (7) Director HBA 1 to Port E0 on Even (8) Director HBA 2 to Port E0 on Odd (9) Director HBA 2 to Port E0 on Even(10) Director
Answer : A
Refer to the Exhibit.
A company has an EMC Symmetrix with remote protection. Data-at-rest encryption (DARE) is installed at the primary site. What is required to secure information on the SRDF links?
- A. IPSec
- B. IPv6
- C. DARE on the remote site
- D. RADIUS
Answer : A
A company has implemented Microsoft Exchange Server 2010 in an SRDF environment with replicas being taken at the disaster recovery (DR) site. During testing of this solution, they have failed over Exchange operations to the DR site. The Exchange mailbox server appears to come online, but user mailboxes are inaccessible. The Exchange Management
Console shows all mailboxes marked with a small red "x" over the mailbox icons.
Which course of action will resolve this issue?
- A. Ensure the Exchange mailbox server at the DR site can communicate with an Active Directory Domain Controller
- B. Recover the database from the clone copies available at the DR site
- C. Ensure that the World Wide Web service on the Exchange server at the DR site has started successfully
- D. Recover the database from the remote clone copies available at the primary site
Answer : A
Which type of security information can be obtained by using the symconnect -sid 6208 list command?
- A. CHAP and RADIUS
- B. CHAP and IPSec
- C. IPSec and ACE
- D. CHAP and ACE
Answer : A
A host with an OLTP workload is configured with five standard devices on an EMC
Symmetrix VMAX. In the host LVM, the storage is configured into a concatenated logical volume. The back-end storage consists of Fibre Channel disk drives. The host has two
HBAs zoned to two FAs.
The workload hits a ceiling at around 66% of the peak workload requirements with high random reads. At peak times:
-> Disk director % utilization is low
-> Host port % utilization is low
-> Disk I/O per second is low
-> Current write pending count is high
What is a likely solution to this problem?
- A. Add striped metavolumes
- B. Add standard devices to the existing LVM volume
- C. Add more HBAs to the host
- D. Add more FAs to the storage devices
Answer : A
A storage administrator is investigating performance issues on a server attached to an
EMC Symmetrix VMAX array. The server is running a database application with database tables located in a file system on a 100 GB standard device. Performance Manager shows that during peak activity times, the 100 GB device is reaching its device write pending limit.
Which solution may help resolve this performance issue?
- A. Migrate to 4 x 25 GB devices and configure a striped volume using a host-based LVM
- B. Migrate the database file system to a larger standard device to increase its write pending limit
- C. Add cache to the array to increase the system write pending limit
- D. Increase the device write pending limit for the existing standard device
Answer : A
A company must deploy Symmetrix Access Control restricting access to hosts that belong to the ADMIN group. Which two default Symmetrix Access Control Entries (ACE) must be removed to restrict access to hosts that do not belong to the ADMIN group?
- A. BASE from group UnknwGrp for ALL devices. ALL from group UnknwGrp for non-pooled devices.
- B. BASECTRL from group UnknwGrp for ALL_DEVS. ALL from group UnknwGrp for INPOOLS devices.
- C. HostID from group UnknwGrp for ALL_DEVS. ALL from group UnknwGrp for INPOOLS devices.
- D. HostID from group UnknwGrp for ALL devices. ALL from group AdminGrp for non-pooled devices.
Answer : A
A company has a SAN environment with VMFS5 hosts attached to an EMC Symmetrix
VMAX experiencing poor performance. They observed that the file system subblock size is misaligned.
What is the correct alignment?
- A. 8 KB
- B. 16 KB
- C. 32 KB
- D. 64 KB
Answer : A
A company's administrator has implemented Symmetrix Access Control. The motherboard in the UNIX host with ADMIN privileges was replaced. After this change, the administrator was unable to issue any Symmetrix Management commands.
What is the next step the administrator should take?
- A. Regenerate the Unique ID
- B. Reboot the UNIX host
- C. Reset the Access Control database
- D. Reinstall Solutions Enabler
Answer : A
A company has activated a consistent clone replica of an Oracle database using hot backup mode on February 26th. The Oracle instance continues to run until March 6th. On
March 7th, the company realizes that an application problem occurred on February 28th.
What is the most recent point to which the database can be recovered?
- A. February 26th
- B. February 28th
- C. March 6th
- D. March 7th
Answer : B
A system administrator needs to migrate all virtual machines in a vSphere datastore from an EMC Symmetrix DMX3 to a VMAX. The virtual machines will be migrated individually to minimize the impact to the ESX hosts. The virtual machines must remain online during the migration.
Which migration approach meets all the objectives?
- A. Use Storage vMotion to migrate the virtual machines to the new datastore
- B. Use vMotion to migrate the virtual machines to a new ESX host
- C. Use host-based tools to migrate to a new virtual machine on the new datastore
- D. Use SRDF/S to migrate the datastore to the new array
Answer : A
Refer to the Exhibit.
- A. Minimum additional investment in Symmetrix hardware
- B. Ability to run production at either target site in the event of a failure at Site A
- C. Ability to incrementally synchronize Sites A and C in the event of a failure at Site B
- D. Lowest network bandwidth requirement
Answer : A
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