Question 1.
You are designing an EMC ControlCenter solution for a new customer to reduce the overall storage and management costs. ITCertKeys.com wants to manage and report on 50 large servers, 200 medium servers, 4 DMX arrays, 10 CLARiiON arrays, 1 HDS 9960 array, and 1 Celerra Gateway. All systems are located in one datacenter. 

What are design considerations for this ControlCenter infrastructure?

A. Network latency, host agents, array agents, network firewalls
B. Network firewalls, host agents, array agents, tape agents
C. Network firewalls, host agents, database agents, network switch type
D. Network latency, host agents, array agents, tape agents

Answer: A

Explanation:
From the EMC ControlCenter Performance and Scalability Guidelines, 5.2 SP3 
 

Network latency is a critical design factor, since large latencies can cause significant performance problems.

Key Control Center Design Considerations:
1. How many Sites, at what distance? (latency)
2. What sort of Firewalls separate the ControlCenter components? (Firewalls)
3. Is more than one network used?
4. Are FQDNs used?
5. What user rules/roles are needed?
6. How will users access the s/w? (Java Console can not be used through NAT)
7. What "off hours" are available for data collection?
8. How "current" must data views be?

Reference: Storage Resource Management Solution Design Concepts

Question 2.
An HP-UX 9000/800 host currently uses multi-pathed storage provisioned from a Symmetrix 8830. All LUNs are presented to the host application using Veritas Volume Manager. The storage array is being replaced by a DMX1000. This will require a data migration effort. The host is running several 24x7 applications and needs to be online during the migration. Two approaches are being considered: host-based mirror/split of the Veritas volumes or array-based SRDF. 

What is a disadvantage of using host-based volume mirroring for the migration?

A. Consumes host CPU cycles and I/O resources; this could adversely impact applications
B. Could result in corrupted filesystems with write-intensive workloads during the migration
C. Requires lots of internal disks, where writes are buffered until initial sync is complete
D. The volume copy process requires four block writes for every block read

Answer: A

Explanation:

A. Array-based SRDF does not use CPU cycles for copy or host I/O processes, whereas host –
    based utilities do.
B. While potentially possible, this is not the best answer.
C. Not true, Veritas volume manager is handling SAN-attached disk currently
D. This depends upon RAID type.

Question 3:
ITCertKeys.com requested that you provide the number of physical disks required to support its Microsoft Exchange 2003 Storage Groups. ITCertKeys.com has 12,500 users at 1.2 IOPS. At peak activity, up to 10,000 users could be logged on to Exchange. 

What other information is required to accurately calculate the number of required disk spindles to meet the user IOPS requirements?

A. Read/write ratio and write penalty
B. Size of user mailbox, RAID type and disk speed
C. Public folders location and deleted item retention period
D. Size of user mailbox, read penalty and RAID type

Answer: B

Explanation:
Key phrase is "to meet user IOPS requirements" [(IOPS x %R) + WP (IOPS x %W)] ÷ Physical disk Speed = Required # physical disks

Question 4.
What are the major characteristics of a tactical solutions design engagement?

A. Provides a scalable, repeatable and standardized change control process to achieve 
    transparent and successful implementations in the customer environment
B. Fixes specific issues identified in the storage infrastructure and recommend new strategies 
    and practices
C. Closes the gap between a current storage infrastructure and specific needs for process or 
    technology optimization and/or new technology features and functionality
D. Suggests business-enabling changes to storage infrastructure to accommodate growth, 
    change in business requirement or directions, or optimizing TCO

Answer: C

Explanation:
A - Refers to Enterprise Management Maturity (EMM) model level
B - Operational engagement
C - Tactical engagement
D - Strategic engagement

Question 5.
What is the goal of an operational solutions design engagement?

A. Business-enabling changes to storage infrastructure to accommodate growth, change in 
    business requirement or direction, or optimize TCO
B. Close the gap between a current storage infrastructure and specific needs for process or 
    technology optimization and/or new technology features and functionality
C. Fix specific issues identified in the infrastructure and recommend new strategies and practices
D. Identify operational process maturity and recommend efficiency improvements

Answer: C

Explanation:
A - Strategic engagement
B - Tactical engagement
C - Operational engagement
D - tactical

Question 6.
ITCertKeys.com is interested in an SRM solution for its Storage environment. The environment is distributed over two data centers, which are 500KM apart with a network latency of less than 100ms between the two sites. The environment consists of: 
120 Servers (A mix of Windows and Solaris Servers)
14 ED 64M Switches
6 Symmetrix DMX1000 Arrays
2 CLARiiON CX600 Arrays
1 Celerra NS600
The SRM Solution should be able to report on and perform configuration tasks on all the storage arrays. The solution should also be able to on the file level details on all the servers.

Which SRM Solution will satisfy ITCertKeys.com requirements?

A. ControlCenter, StorageScope, StorageScope FLR and Celerra Manager
B. VisualSAN, VisualSRM, Celerra Manager and Navisphere Manager
C. ControlCenter, StorageScope, StorageScope FLR and Navisphere Manager
D. ControlCenter, VisualSRM, Navisphere Manager and Celerra Manager

Answer: A

Explanation:
With Symmetrix, need ControlCenter (Provides Volume and system-level reporting, Storage device management, and SAN device utilization reporting) With Celerra, need Celerra Manager Either VisualSRM or Storage FLR can give file level details (and are virtually interchangeable from a Design, Installation and Usage perspective)

Question 7.
You are designing a NAS solution for ITCertKeys.com. It will involve adding an NSX with four X-Blades to an existing CX700. ITCertKeys.com has two ports on each SP to dedicate to the NSX. 

Which disk layout best practice should influence your design?

A. Restrict filesystems to a single DAE
B. Avoid striping Celerra filesystems across LUNs of different RAID types
C. Use CLARiiON metaLUNs to increase performance
D. The CLARiiON has a limitation of 256 LUNs per SP port

Answer: B

Explanation:
A - This is not a best practice; file system can cross DAEs
B - This is a best practice for Celerra
C - This is not a best practice; it is better to use AVM
D - This does refer to a best practice

Question 8.
You are planning the storage requirements for an Exchange 2003 server. The server supports 750 users in a single Exchange Storage Group (ESG) with five databases. You need to calculate the capacity required for the ESG. ITCertKeys.com has indicated that the average user mailbox will be 125MB. The anticipated growth is expected to be 20%.

What other factors need to be considered to calculate the required capacity?

A. Read/write ratio and write penalty
B. Size of PST, RAID type and disk speed
C. Public folders location and deleted item retention period
D. Log size, read penalty and RAID type

Answer: C

Explanation:
A - relates to IOPS (performance) more than capacity (size)
B - PSTs are not part of the Exchange database
C - Deleted item retention period will affect capacity
D - Log size will affect capacity, but can be calculated (10% of IOPS calculation * number days log files are kept)

Question 9.
ITCertKeys.com is planning to implement a new CX700 with SnapView for its Windows environment. The client is deciding if it should use Dynamic Disks or metaLUNs for its file systems. 

What benefit will the client gain by choosing metaLUNs instead of Dynamic Disks? "

A. Dynamic file system growth
B. SnapView scripting is simplified
C. Improved performance with striping
D. Less drive letters required

Answer: B

A - this would be a benefit of Dynamic disks. (Basic disks can still be expanded using Dispart command line)
B - If dynamic disks are used for striping, then SnapView scripts have to account for the underlying LUNs. With MetaLuns, the snapview script only has to account for the metalun; the array masks the component luns from Snapview.
C - Performance can be affected by striping in either scenario
D - The same number of drive letters would be required

Question 10.
Which Celerra technology should you propose to ITCertKeys.com to reduce the amount of time spent creating NAS filesystems?

A. CDMS
B. AVM
C. VDM
D. NSCAP

Answer: B

A - CDMS is Celerra Data Migration Services (not related to ongoing creation of NAS filesystems)
B - AVM, Automatic Volume Manager; system used by Celerra to allow for easy and efficient creation of File Systems and their underlying storage containers (volumes)
C - VDM is a Virtual Data Mover (not related to ongoing creation of NAS filesystems)
D - NSCAP, Network Storage Capacity Audit Process (not related to ongoing creation of NAS filesystems)

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