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EMC E20-326 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Storage Provisioning & Virtualization | 20% | - SRP and storage resource management - Device configuration and masking - Symmetrix Virtual Provisioning - Thin pools and FAST VP technology |
| Topic 2: Remote Replication & SRDF | 25% | - Disaster recovery planning - SRDF/Synchronous and SRDF/Asynchronous - SRDF/Metro and SRDF/DM - Networking and connectivity design |
| Topic 3: Symmetrix VMAX Architecture | 25% | - FA, DA, and SA director functionality - Enginuity operating environment - Hardware components and architecture - Cache and memory management |
| Topic 4: Local Replication Solutions | 20% | - TimeFinder family overview - Consistency groups and BCVs - Open Replicator functionality - TimeFinder/Snap, Clone, and VP |
| Topic 5: Performance & High Availability | 10% | - RAID protection design - Multi-site availability design - I/O characteristics and workload analysis - Cache partitioning and tuning |
EMC Symmetrix Solutions Design Exam for Technology Architects Sample Questions:
You are designing the Symmetrix VMAX architecture for a DAS-to-SAN SQL Server migration. Currently all user databases reside on a single locally-attached disk enclosure, mounted to "M:\". You have decided on RAID-1 protected 15,000 RPM drives for the new SQL environment.
Last week, you configured Perfmon to record the current IOPS load of the databases during the 8-hour business day, Monday through Friday as shown in the exhibit. During an average business day, the transaction log processes 43 GB worth of data.
Following EMC best practices, which discount can be taken from the overall write IOPS when calculating for the database writes?
- A. 989
- B. 196
- C. 597
- D. 392
Which FAST VP control parameter specifies the maximum amount of time over which long term activity rates will decay?
- A. Workload Analysis Period
- B. Initial Analysis Period
- C. Pool Reserved Capacity
- D. FAST VP Relocation Rate
A customer plans to configure their new Symmetrix VMAX 20K. They want your advice on how to configure a storage pool. This new storage pool will handle large block, sequential write I/O.
What advice should be provided about RAID types as they relate to performance?
- A. RAID type does not matter since everything in the VMAX goes through cache.
- B. Use RAID 1 because RAID 5 will have an overhead penalty.
- C. Use RAID 5 because it can be more efficient for sequential writes than RAID 1.
- D. Use RAID 6 because both RAID 1 and RAID 5 have a higher overhead penalty.
A storage administrator receives a warning message that one of the thin pools in the Symmetrix is low on storage space. The pool contains a large number of thin devices that have been fully preallocated but have small amounts of used space. What is the least disruptive and most cost effective way to make more thin pool space available?
- A. Add more data devices to the thin pool
- B. Rebalance the pool
- C. Unbind the underutilized thin devices from the pool
- D. Run zero space reclamation on the thin devices
Refer to the exhibit.
A customer has a Symmetrix VMAX storage array configured with FAST VP using three storage tiers. Policies are active for all storage groups on the array. The array has been in service for over 30 days.
When using Unisphere for VMAX to check, the customer notices no active ingress and egress of extents for the EFD tier. The current configuration of FAST is shown in the exhibit.
Which parameter should be changed?
- A. Workload Analysis Period
- B. FAST VP Data Movement Mode
- C. Data Movement Mode
- D. Min Initial Workload Period
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