HP0-238

HP Certified Professional
Supporting the MSA1000 and SCSI JBODs
(HP0-238)
Exam Preparation Guide

Purpose of the exam prep guide

The intent of this guide is to set expectations about the content and the context of the exam and to help candidates prepare for the exam. In this guide, you will find recommended HP training courses, reference and study material help you achieve a successful passing score.

Studies conducted by HP and Prometric show that a combination of course attendance and self-study maximizes the likelihood of passing the exam on the first attempt.

Audience

This exam is for MSA1000 support personnel with at least 6 months experience in an MSA1000 support role. Examples of job roles:

? HP Accredited Platform Specialist (APS) support engineer

? HP Channel Partners supporting HP storage products (e.g., engineers who perform warranty and installation services)

General areas of content include storage fundamentals and technologies, the StorageWorks product line, MSA1000 troubleshooting and replacement, and MSA1000 subsystem installation, configuration, and upgrade.

Certification requirements

The Supporting the MSA1000 and SCSI JBODs (HP0-238) exam is the core requirements to be certified as an Accredited Platform Specialist – MSA1000.

Prerequisites

? HP StorageWorks Modular SAN Array 1000 (MSA1000) (4630)

Exam details

At the beginning of the exam, you will be asked to answer several survey questions. The survey has been designed to assist the exam development team in accurately profiling test results and to improve future exams.

? Number of items: 99

? Item types: Multiple choice and drag-and-drop.

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Supporting the MSA1000 and SCSI JBODs (HP0-238) Exam Preparation Guide

? Time commitment: 2 hours

? Passing Score 57% (raw score of 57)

? Reference Material: No on-line or hard copy reference material will be allowed at the testing site.

Comments on the exam

After the exam has been completed, there is an additional 15 minutes allotted for the participant to make specific comments about the test or survey items
(for example, accuracy, appropriateness to audience). HP welcomes these comments as part of our continuous improvement process.

Exam Registration

This exam is available at Prometric.

Exam Content

The following testing objectives represent the specific areas of content covered in the exam. Use this outline to guide your study and to check your readiness for the exam. The exam measures your understanding of these areas.

Supporting the MSA1000 and SCSI JBODs (HP0-238) Exam Content

1.0 Storage Fundamentals and Technologies.

Identify the different SCSI standards and how StorageWorks integrates these technologies.

? Identify the different types of SCSI standards. Include the differences, characteristics, capabilities, terminology, definitions, data
communication methods and the effect each has on system performance.

• SCSI I

• SCSI II

• SCSI III

• SCSI options:

? Fast

? Wide

? Ultra

Recognize and describe the limitations, system requirements, and configuration rules encountered when attaching devices to a SCSI bus.

? Describe the types, purpose, and function of termination on a SCSI bus:

• Active

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Supporting the MSA1000 and SCSI JBODs (HP0-238) Exam Preparation Guide

• Passive

? Describe the types, characteristics, and limitations of SCSI cables.

? Describe the physical characteristics and purpose of the various SCSI connectors. State limitations and possible system problems when configured incorrectly.

• 50-Pin/50-pin HD/68-Pin/VHDCI/SCA

? Describe the purpose of hardware devices attached on a SCSI bus, stating the configuration rules and required additional driver information
if applicable.

• Hard disk drives

Interpret the commands and protocols associated with the SCSI standard when communicating with peripheral devices.

? Explain how SCSI addressing is performed:

• Bus

• Target

• Logical Unit Numbers (LUNs)

? State the steps to set up and configure the target devices on a SCSI
bus.

• Setting target IDs

• Configuring LUNs

? Identify the peripheral devices and describe the configuration rules on the SCSI bus.

• RAID controllers

• Enclosures

? Explain the sequence required to execute a command over a SCSI bus. Include the SCSI commands and usage rules that apply to the
operation.

• SCSI IDs and priorities

Identify the Fibre Channel (FC) architecture, features and operation.

? Describe the three FC topologies. Include associated hardware and software, interconnection technology, characteristics, capabilities, terminology and definitions, and the effects each has on performance and capability.

• Point-to-Point

• FC-AL

• FC-SW/FC-SF

• Architecture of cable types/lengths:

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Supporting the MSA1000 and SCSI JBODs (HP0-238) Exam Preparation Guide

? Single Mode Fibre

? Multimode Fibre

? Copper

? Describe the function of each port type in a selected FC topology.

• Port

• E Port

• FL Port

• GL Port

• G Port

• N Port

• L Port

• NL Port

? Define the requirements, limitations and configuration rules for Fibre
Channel interconnect hardware and selected switched fabric options.

• Configuration rules for cable types/lengths

• Connector types, for example GBICs

• Cascading

• Quickloop

• Zoning

? Define the function, characteristics, and limitations of FC-associated
StorageWorks hardware components:

• HBA

• GBIC

• GLM

• Hubs

• Switches

• Transceivers:

? Short Wave

? Long Wave
? Define the differences and distinguish between Fibre Channel speeds. Identify the different RAID levels and supporting technologies, and how
StorageWorks integrates these technologies to create fault tolerance.

? Define the types of RAID implementation.

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Supporting the MSA1000 and SCSI JBODs (HP0-238) Exam Preparation Guide

? Describe the different RAID levels. Include the differences,
characteristics, capabilities, terminology and definitions.

• Performance and Availability Characteristics per level

• RAID 0

• RAID 1

• RAID 3

• RAID 4

• RAID 5

• RAID 0+1

• RAID ADG

? Define the criteria for selecting and implementing a particular RAID
level.

? Describe the types of disk cache and technologies used to support
StorageWorks solutions.

• Describe caching techniques used to increase the system performance:

? Read/Read Ahead

? Write Behind/Write Through/Write Back

• Cache Placement:

? Device Cache

? Controller Cache

• Highly Available Cache:

? N+1, Mirrored Cache, ECC

? Battery Backup compared with non-backed up

2.0 StorageWorks Products that Support Customer Needs

Explain the features and benefits of HP StorageWorks subsystems and components. Include implementation methodologies, restrictions and limitations.

? Identify HP SCSI components, such as FC adapters.

? Describe the StorageWorks interconnect products and explain how and where to implement them:

• Hubs

• Switches

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Supporting the MSA1000 and SCSI JBODs (HP0-238) Exam Preparation Guide

3.0 MSA1000 Installation, Configuration and Upgrade Procedures

Hardware components

? Recognize and identify the main components of the MSA1000.

• MSA1000 controller:

? Array accelerator (cache module)

? Array accelerator battery (cache battery)

? Controller display

• SCSI I/O module with integrated EMU

• Redundant power supply and blower assemblies

• Fibre Channel I/O module

• MSA SAN Switch 2/8

• MSA Fabric Switch 6

• MSA Hub 2/3

• Storage enclosure 4314/4354

• Universal disk drives

? List the steps in the power up sequence of the MSA1000 as seen on the controller display.

? List the sequence of steps required for proper installation of a MSA1000
storage subsystem.

? Recognize MSA1000 hot-pluggable components.

? Describe the MSA1000 SCSI ID and bus assignments. MSA1000 software components
? Demonstrate the ability to configure the MSA1000 using the Array
Configuration Utility.

? Demonstrate the ability to configure the MSA1000 using the Command
Line Interface (CLI).

? Describe how the MSA1000 integrates with Insight Manager 7. HP software and operating system components
? Describe how to load appropriate software drivers:

• Using the MSA1000 Software Support CD

• Manually

? Describe Secure Path functionality.

? Describe Virtual Replicator functionality.

Demonstrate the ability to interpret subsystem displays to verify operation and check status.

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Supporting the MSA1000 and SCSI JBODs (HP0-238) Exam Preparation Guide

? LED

? Controller display messages

Demonstrate the ability to perform firmware upgrades on the MSA1000
controller.

? Describe ROM capabilities:

• ROM cloning

• Recovery ROM

? Perform ROM upgrade using MSAFlash utility.

Demonstrate correct installation and configuration of the MSA SAN Switch 6.

? Connecting to and using the CLI.

? Connecting to and using the MSA Fabric Switch 6 Management utility.

? Demonstrate the correct procedure for updating the MSA Fabric Switch
6 Management utility.

Demonstrate correct installation and configuration of the MSA SAN Switch
2/8.

? Connecting to and using the CLI.

? Connecting to and using the MSA Fabric Switch 2/8 Management utility.

? Demonstrate the correct procedure for updating the MSA Fabric Switch
2/8 Management utility.

List supported configurations relating to the MSA1000.

4.0 MSA1000 Troubleshooting and Replacement Procedures.

Given a problem scenario, identify the cause of a MSA1000 storage subsystem problem.

? Describe the utilities and tools that should be used, and the common questions that should be asked, when determining a customer’s MSA1000 storage problem.

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List the common symptoms for MSA1000 storage-related problems.

? List common visual symptoms for MSA1000 storage-related problems.

• Identify and determine environmental causes for storage system failures.

? Determine if a given problem is related to hardware or software.

• List and perform the steps to perform logical troubleshooting on the
MSA1000.

? Identify common errors, interpret operating system and diagnostic messages, and identify the failed components for a given MSA1000 problem.

• Interpret system LED messages:

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Supporting the MSA1000 and SCSI JBODs (HP0-238) Exam Preparation Guide

? MSA1000 controller

? FC I/O module

? SCSI I/O module with integrated EMU

? Power supply/blower assembly

? Enclosure status

? Hard drive indicators

? MSA Fabric Switch 6

? MSA SAN Switch 2/8

? MSA Hub 2/3

• Display messages

? Describe how to retrieve and interpret driver messages.

• Interpret host error log events and operating system messages to analyze storage subsystem errors and isolate fault conditions.

? Determine common errors shown in Insight Manager 7.

Given a problem scenario, choose the best method to repair or replace the defective subsystem or components.

? Perform correct CRU or FRU replacement procedures.

Recommended Training and Study References

This section lists training courses and documents that can help you acquire a majority of the knowledge and skills needed to pass the exam. You must also gain the practical experience outlined in this guide

You are not required to take the courses listed in this section. However, HP strongly recommends that you attend the classes, participate in class labs, and thoroughly review all course material and documents before taking the exam, even if you believe you have sufficient on-the-job experience.

Instructor-Led Training

Use the information in this guide and the practical experience you have gained to determine your need for the instructor-led training.

Title Course Number How to Enroll
HP StorageWorks
Modular SAN Array
1000 (MSA1000) 4630 External: Americas:

http://www.hp.com/go/training

Asia/Pacific:

http://psaweb07.sgp.hp.com/appa/English/I

ndex.aspx

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Supporting the MSA1000 and SCSI JBODs (HP0-238) Exam Preparation Guide

Internal:

http://tslearner.den.hp.com/redirect.asp?page=

DisplayCatalogItem&item=4630

Web-based Training

Self-paced training and technical documentation may provide appropriate learning alternatives to instructor-led training for more experienced candidates.

Title Course Number How to Order/Obtain
Storage Technologies Web Based Training 1822 External

Americas:

www.hp.com/go/onlinelearning

Asia/Pacific:

http://www.hp.com/go/onlinelearning/

Internal

http://tslearner.den.hp.com/redirect.asp?page=

DisplayCatalogItem&item=1822
StorageWorks Full Line Technical Web Based Training 488 External

Americas:

www.hp.com/go/onlinelearning

Asia/Pacific:

http://www.hp.com/go/onlinelearning/

Internal

http://tslearner.den.hp.com/redirect.asp?page=

DisplayCatalogItem&item=488
Introduction to Storage Area Networks NED1-SANCBTvA External

Americas:

www.hp.com/go/onlinelearning

Asia/Pacific:

http://www.hp.com/go/onlinelearning/

Internal

http://tslearner.den.hp.com/redirect.asp?page=

DisplayCatalogItem&item=NED1-SANCBTvA

Documentation and other reference material

A comprehensive list of documentation and references is provided in the training material.

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Supporting the MSA1000 and SCSI JBODs (HP0-238) Exam Preparation Guide

Sample Test Items

The sample test items give you a preview of what the actual test items will
look like. It is important to note that these items WILL NOT be on the exam;
however, they are representative of the actual items and should help you become familiar with the format and complexity of the test items. These sample items are not a check for readiness.

1. Wide SCSI ____.

A. is used only with SCSI 3

B. supports up to a maximum of 8 SCSI IDs

C. doubles the bandwidth compared to a narrow bus of the same type

D. does not support narrow devices

2. SCSI bus termination is ____.

A. required and there must be two terminators, one at each end of the bus

B. optional

C. only required for LVD SCSI

D. required and there must be one terminator for each device on the bus

3. Which SCSI ID has the lowest priority on a SCSI bus? A. 0
B. 7

C. 8

D. D.15

4. A Fibre Channel fabric uses ____.

A. fixed IDs assigned by the service engineer during installation

B. 24 bit addresses assigned by the switches each time a device is connected to the fabric

C. fixed AL_PA IDs assigned by the switches during initialization of the fabric

D. 24 bit addresses assigned by the service engineer during installation

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Supporting the MSA1000 and SCSI JBODs (HP0-238) Exam Preparation Guide

5. Read cache is a caching mechanism where ____.

A. the data read from the disks stays in cache until it reaches a threshold

B. the RAID controller reads more data than requested from the disks, predicting the additional data will be addressed during subsequent write operations

C. every I/O goes directly to the respective disk

D. every I/O goes into the RAID controller cache and in a background operation to the respective disk

6. Which operating systems can share a single MSA1000? A. Windows 2000 and Novell NetWare
B. Red Hat Linux Advanced Server and Tru64 Unix

C. SUN Solaris and OpenVMS

D. Windows 2000 SP3/SP4 and Tru64 Unix

7. The MSA1000 provides SCSI busses. A. 1
B. 2

C. 3

D. 4

8. What is the final message on the controller display after successful MSA1000
power-up?

A. unit ready

B. startup complete

C. redundancy enabled

D. status ok

9. To check the settings of the MSA1000 controller, you issue the CLI command
____.

A. VIEW CONTROLLER

B. VIEW THIS_CONTROLLER C. SHOW CONTROLLER
D. SHOW THIS_CONTROLLER

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Supporting the MSA1000 and SCSI JBODs (HP0-238) Exam Preparation Guide

10. Which software used with the MSA1000 provides high availability?

A. Virtual Replicator

B. Secure Path

C. ACU XE D. MSAUtil

11. When a new message is displayed in the text display window of the
MSA1000, the old message disappears. How can you determine if there was
a previous unviewed error message?

A. The unviewed error message will display again after the new message has been viewed.

B. An amber LED flashes on the left of the text display window. C. An amber LED lights up on the left of the text display window.
D. You must reboot the MSA1000 to view previous error messages.

12. You have a redundant MSA1000 configuration. The customer discovers the host cannot access the disk on BUS 2/Target 1/LUN 3 under Windows. What may be causing the problem?

A. The second disk from the left in the disk enclosure connected to the lower
SCSI connector

B. The second disk from the left in the disk enclosure connected to the upper SCSI connector

C. The logical drive 1 configured in the MSA1000

D. The logical drive 3 configured in the MSA1000

13. Which messages are displayed in the MSA1000 display module? A. critical, warning and informational
B. error, informational and user input

C. critical, warning and user input

D. error, critical and informational

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Supporting the MSA1000 and SCSI JBODs (HP0-238) Exam Preparation Guide

14. Which MSA1000 parts are hot-pluggable? Select THREE.

A. disk drive

B. backplane

C. SCSI I/O module with EMU D. 4U chassis
E. MSA1000 controller

F. Fibre Channel I/O module

15. You must power off the MSA1000 to replace the ____. Select TWO. A. MSA1000 6-Port switch
B. MSA1000 Fibre Channel I/O module

C. SCSI I/O module with EMU D. 4U chassis with backplane E. MSA1000 3-Port HUB

Answers:
1. C 4. B 7. D 10. B 13. B
2. A 5. A 8. B 11. C 14. A, E, F
3. C 6. A 9. D 12. D 15. C, D

Conclusion

HP wishes you success in the HP Certified Professional Program and in passing the exam for which you are preparing.
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