Page: 1
/ 16
Total 233 questions
During a data gathering meeting with a customer, a discussion about applications was presented. Most of the applications are best suited for a RAID 5 pool on the VNX.
However, one of the applications has an I/O requirement for RAID 1/0 spindles.
How should the RAID 1/0 application requirement be handled?
- A. Create two separate pools; one for RAID 5 and the other for RAID 1/0
- B. Combine the RAID 1/0 with the RAID 5 into one pool
- C. Create a large RAID 1/0 pool
- D. Create a large RAID 6 pool
Answer : B
A customer asked for your assistance in the design and migration of their existing storage to a new VNX system. The customer provided the graphical data from their performance monitoring tool showing data IOPs for the server. The monitoring tool uses iostat which gathers data every 15 minutes.
Which primary factor should be explained to the customer when requesting alternate performance data?
- A. Collection Interval
- B. Running Average
- C. Peak Workload
- D. Data Quantity
Answer : A
A host with visibility to a VNX Snapshot is attached to a Storage Mount Point (SMP). The user has detached the original Snapshot and then attached a later Snapshot to the SMP.
What must the user do to make the new point in time data visible to the host?
- A. No user action is required.
- B. User must rescan host bus.
- C. User must remove and then re-add the SMP to the host.
- D. User must reboot host.
Answer : A
Your customer's IT group configured a VNX array and created multiple RAID 5 (2+1) RAID
Groups. They just realized their mistake and bought new drives.
How would you bring the customer into compliance with EMC best practices with minimal impact?
- A. Create RAID-5 (4+1) groups with new drives; migrate LUNs to new RAID Groups.
- B. Use the new drives to expand existing RAID-5 Groups to RAID-5 (4+1) Groups.
- C. Back up all data to tape; then destroy and re-create RAID Groups with RAID-5 (4+1) RAID Groups.
- D. Buy a new VNX configured with RAID-5 (4+1) and use SAN Copy to migrate the data.
Answer : A
Which tool is used to verify that the customers hosts and switches are compatible with their new VNX?
- A. E-Lab Advisor
- B. EMC Migration Planner
- C. Networked Storage Designer (NSD-U)
- D. Analyzer Helper
Answer : A
After reviewing the design for a new VNX5800, a customer requests an explanation of the sparing algorithm used by the array. The following information is provided:
-- A RAID group consists of eight 600 GB 10K SAS drives in a 6+2 RAID 6 configuration
-- Within this RAID group there are three 125 GB LUNs
-- One of the eight drives has just failed
Based upon this information, which spare drive would the array select first to replace the failed drive?
- A. 100 GB Flash
- B. 300 GB SAS
- C. 600 GB SAS
- D. 2 TB NL-SAS
Answer : C
What is the "rule of thumb" for calculating the amount of Data Mover memory SavVol space requires?
- A. 1GB takes ~1MB
- B. 1GB takes ~ 8KB
- C. 1GB takes ~ 8MB
- D. 1GB takes ~ 1KB
Answer : A
You are gathering data from a customer environment. You have to process a number of configuration reports.
What tool provides a simple method of processing the data gathering configuration?
- A. Unisphere Analyzer
- B. Collect Support Materials
- C. E-Lab Advisor
- D. CLARiiON Configuration Builder
Answer : C
A customer created a user-defined storage pool to physically segregate the file systems of a business unit. The customer was careful to select LUNs from different RAID Groups for the user-defined pool. After creating a file system from this storage pool with AVM, the customer discovered that the file system was created on a single LUN instead of multiple
LUNs for better performance.
What do you recommend to make AVM use multiple LUNs when creating a file system from the user-defined pool?
- A. Stripe LUNs before adding them to the user-defined pool.
- B. Specify file system size greater than any single LUN size.
- C. Define the file system type to be MPFS.
- D. Use the "slice=yes" option for the file system.
Answer : A
A customer is experiencing a performance issue with a specific VNX file system. Analyzer showed that the utilization of several RAID Groups was in the red. The problematic file system, however, was mapped only to one of those RAID Groups, while other RAID
Groups served file systems without known issues. How would you explain utilization metric to this customer?
- A. Utilization is a calculated number that determines how busy an object is, and it is likely to be too high rather than too low.
- B. Utilization is a derived number that carries very little weight, and it is likely to be too low rather than too high.
- C. Utilization is a calculated number that is used only for the internal spinning disk write/read adjustment algorithms, and it is always definitive.
- D. Utilization is a metric showing the ratio between capacity and spinning speed. When high, it is an indicator that a particular disk should be replaced.
Answer : A
An enterprise-level customer has recently implemented a pair of bi-directionally IP replicated VNX systems for their highly transactional CIFS file-based environment and NFS
Office systems. Each VNX has two storage pools of Flash RAID 5, SAS RAID 5, and NL-
SAS RAID 6 for source file systems and SAS. NL-SAS for destination file systems with multiple checkpoints are being taken each day and retained for 30 days.
After a number of months, they have growing concerns that the replication performance has degraded. In addition, the amount of free space available in the source storage pools has beenreduced to almost critical levels. They asked your advice on whether to utilize 16 unassigned NL-SAS drives to extend the pools or to purchase additional SAS drives.
How would you advise the customer about the next step?
- A. Create a new pool from the NL-SAS drives and relocate all SavVols to it
- B. Add 8 x NL-SAS drives to the source and destination pools on each system
- C. Purchase additional SAS drives to increase the performance and pool sizes
- D. Add 16 x NL-SAS drives to the source pool on each system
Answer : A
What is the maximum time (in seconds) that VSS will stop Exchange I/O processing when
VSS creates an application-aware point in time copy?
- A. 60
- B. 30
- C. 10
- D. 1
Answer : A
Refer to the exhibit.
What type of VNX configuration is illustrated with this topology?
- A. VNX MPFS with iSCSI/FC
- B. VNX MPFS with FC/FCoE
- C. VNX gateway with iSCSI/FC
- D. VNX gateway with FC
Answer : A
A customer is replacing a CLARiiON CX-4 array with a VNX array. SAN Copy Pull is determined to be the best method to migrate the data.
What is an advantage of using the pull method in this scenario?
- A. Permits use of faster SPs
- B. Faster transfer of data
- C. Uses Incremental transfer
- D. Higher load on the source array
Answer : A
30 days access 