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E20-555 Isilon Solutions and Design Specialist Exam for Technology Architects Questions and Answers

Questions 4

A customer has 10 nodes in a cluster using N+2 protection. What is the minimum number of nodes required to be online and in communication with one another to satisfy quorum?

Options:

A.

4

B.

5

C.

6

D.

7

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Questions 5

-- Exhibit --

We have been engaged by a research hospital to help upgrade their Isilon installation. They currently have 12 previous generation Isilon nodes with 200TB of capacity and run on a 1Gbps network. They currently have 6 Illumina Hi-Seq Sequencers and an HPC cluster to process data. They would like to expand Isilon to 2PB of active data and 1PB of archive data. They use a third party data and metadata management service (IRODs) to stage data for analysis. The Isilon cluster is mainly used for analysis work with the HPC cluster.

-- Exhibit --

The customer has a limited budget. What would be the best price/performance solution for their active data?

Options:

A.

14 X-Series nodes with no SSD drives and 96GB of RAM

B.

17 X-Series nodes with SSD drives and 48GB of RAM.

C.

14 NL-Series nodes with 24GB of RAM

D.

12 X-Series nodes with no SSD drives and 24GB of RAM

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Questions 6

A customer has a data retention period of three years. They want a solution in which files cannot be deleted, changed, or modified.

Which Isilon SmartLock version should they implement?

Options:

A.

Compliance version

B.

Standard version No WORM

C.

Enterprise version

D.

Standard version with WORM

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Questions 7

A customer has two data centers (Site A and Site B).There is an Isilon cluster in each data center and they use SyncIQ to replicate data between the two data centers.

You have reviewed their disaster recovery plan and found the following:

  • The policies specify that SyncIQ runs a replication job every 3 hours and that the job finishes within 1 hour.
  • Three additional hours will be needed to get servers and the network redirected to work from Site B.

What is the Recovery Point Objective in this plan?

Options:

A.

2 Hours

B.

3 Hours

C.

4 Hours

D.

5 Hours

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Questions 8

When creating a FilePool policy via the OneFS WebUI, what is the maximum allowed number of condition

blocks?

Options:

A.

1

B.

3

C.

8

D.

No limit

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Questions 9

How many files can reference a single block within a shadow store?

Options:

A.

8

B.

128

C.

512

D.

32,000

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Questions 10

A customer has a 7-node Isilon cluster configured with N+2:1 protection. How many nodes can be offline with the data accessible and fully writeable?

Options:

A.

1

B.

2

C.

3

D.

0; all nodes must be online

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Questions 11

You have had several discussions with your customer in the processor design industry. They have stated that they want a Scale-Out NAS platform for their design environment. Their most significant responses were "We have 125 design engineers accessing large diagrams and we need high throughput to support them. Can we also get the highest performance available? We need to stay ahead of our competitors." Other areas you discussed were their data retention policies and workflow after the chip design is completed. They plan to archive the design files but the files must stay on line.

What is your initial node recommendation?

Options:

A.

S-Series nodes for the active diagrams and NL Series nodes for the archives

B.

A-Series nodes for the active diagrams and X-Series nodes for the archives.

C.

X-Series nodes for the active diagrams and NL 400 nodes for the archives

D.

X-Series nodes with SSD for the active diagrams and NL nodes for the archives

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Questions 12

What is a benefit of using SSDs for Metadata Read/Write Acceleration?

Options:

A.

Can be mixed with L3 cache on same node pool

B.

Improved create, write, and delete performance

C.

Guarantees data can be pinned to SSD

D.

Does not need numerous SSDs to be effective

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Questions 13

Which Isilon OneFS administration methods are enforced by RBAC?

Options:

A.

Platform API, command line, and web administration interface

B.

Command line, InsightIQ, and web administration interface

C.

SNMP and web administration interface

D.

Command line, web administration interface, and SNMP

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Questions 14

How does Isilon SnapshotIQ use storage for snapshots?

Options:

A.

Through Changed Block Tracking and only changed data blocks are saved

B.

Works on the file level and saves the entire file no matter what has changed

C.

Works with 4 KiB blocks and will always use that amount of storage, no matter what has changed

D.

Through Changed Block Tracking and always uses a 4 KiB block, even if the data changed is less than that amount

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Questions 15

What is the sector size of an Isilon 8 TB drive?

Options:

A.

512 bytes

B.

1024 bytes

C.

2048 bytes

D.

4096 bytes

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Questions 16

How much space is consumed by a 4 KB file when the file data is written to the Isilon cluster?

Options:

A.

4 KB

B.

8 KB

C.

16 KB

D.

32 KB

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Questions 17

A customer environment is used for analytics on very large datasets. They are interested in using Isilon storage and Hadoop but are concerned about the costs.

How does Isilon change the scalability of a Hadoop environment?

Options:

A.

JobTracker and TaskTracker are offloaded to the Isilon cluster

B.

DataNode and TaskTracker are offloaded to the Isilon cluster

C.

NameNode and DataNode are offloaded to the Isilon cluster

D.

NameNode and JobTracker are offloaded to the Isilon cluster

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Questions 18

What is a characteristic of predefined sets of privileges of OneFS built-in administrator roles?

Options:

A.

Can be modified without limitation

B.

Can be nested into other roles

C.

Cannot be modified

D.

Can be modified by selected users

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Questions 19

After raw events are processed by the CELOG coalescers, what happens to the data?

Options:

A.

Stored in the log databases and coalesced into event groups

B.

Stored in the audit host and coalesced into event groups

C.

Stored in the syslog host and coalesced into event groups

D.

Stored in the log databases and not coalesced into event groups

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Questions 20

A customer is inquiring about expanding their primary cluster consisting of six S-Series nodes in order to improve performance. They have a second cluster with 11 X-Series nodes. Both clusters leverage 1GbE, but the customer recently installed a 10GbE network that can be utilized. They also have multiple Fibre Channel SAN arrays in their environment.

They have a variety of workloads on each cluster and are in the process of determining which workloads belong on which cluster. They have discovered that one of the workloads- a SQL database that resides on the X-Series node cluster - is experiencing timeouts due to latency. The database vendor has suggested limiting latency to 5ms or less to eliminate these timeouts.

How do you advise the customer?

Options:

A.

Consider migrating data from Isilon to one of their SAN platforms or proposing a new solution to handle the performance requirements of SQL.

B.

Merge the S-Series nodes and X-Series nodes into one cluster, upgrade the 1GbE to 10GbE, and leverage SmartPools to allow for the cluster to determine where data should reside.

C.

Suggest the customer consider leveraging SSDs in the new nodes they purchase and GNA to boost the performance of each cluster.

D.

Recommend they increase the amount of DRAM in the cluster or consider an Accelerator node in order to increase the amount of cache in their cluster.

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Questions 21

A customer plans to deploy N+2d:1n protection on a 5-node Isilon cluster. How much capacity will be used to store a 320 KiB file?

Options:

A.

512 KiB

B.

448 KiB

C.

576 KiB

D.

640 KiB

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Questions 22

Which Isilon product is recommended where low-latency and maximum performance is a critical factor?

Options:

A.

X-Series

B.

S-Series

C.

SmartQuotas

D.

NL-Series

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Questions 23

An existing customer has two NAS systems providing NFS storage in their main datacenter - one is an Isilon cluster and the second is an array from another vendor. Both systems are four years old, and the customer would like to consolidate the storage into a single solution. According to the customer, both systems support identical workloads with similar performance and utilization, and they want the new solution to support 50% performance growth.

Which method can model the workload requirements, and what multiplier will capture the requirements for the new solution?

Options:

A.

Use isi statistics protocol, and multiply by 3

B.

Use isi statistics drives, and multiply by 1.5

C.

Use isi statistics query, and multiply by 2

D.

Use isi statistics system, and multiply by 3

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Questions 24

A hospital is considering using Isilon to store their long-term archive data for their GE PACS application. They currently have two million 17 MB studies. They expect capacity requirements to be 50% compounded growth per year. They plan to use N+2:1 protection, and would like this sized for three years of growth.

Which minimum cluster configuration would meet this customer's environment?

Options:

A.

Five NL400 (1 TB drive) nodes

B.

Four NL400 (2 TB drive) nodes

C.

Five X200 (3 TB drive) nodes

D.

Three X400 (3 TB drive) nodes

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Questions 25

A company needs to have their data asynchronously replicated. They also need to maintain a daily copy of the data for a week at the target side to enable fast recovery of files. They decide to purchase two Isilon clusters. They do not want to spend money unnecessarily. Which licenses must they acquire?

Options:

A.

SyncIQ license at source and target clusters. SnapshotIQ license at source and target clusters.

B.

SyncIQ license at source cluster only. SnapshotIQ license at source cluster only.

C.

SyncIQ license at target cluster only. SnapshotIQ license at target cluster only.

D.

SyncIQ license at source and target clusters. SnapshotIQ license at target cluster only.

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Questions 26

A customer has a cluster consisting of six H500 nodes (in one full chassis and one half populated chassis) and

four A200 nodes (in one full chassis). The customer wants to expand their A200 nodes.

What is the minimum number of A200 nodes and chassis the customer can add to the cluster?

Options:

A.

2 nodes; 0 chassis

B.

2 nodes; 1 chassis

C.

4 nodes; 1 chassis

D.

4 nodes; 2 chassis

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Questions 27

A customer has a 5 node Isilon cluster. The raw capacity of the cluster is 85% used. On average, the cluster has 4,000 users connected during office hours. The average CPU usage is 65%. The customer needs to delete some data to free up capacity. What should the customer do to minimize the effect of the deletion job?

Options:

A.

Delete the data from a client directly connected to the cluster

B.

Run the treedelete job with a high impact and high priority during out-of-office hours.

C.

Run the treedelete job with a high impact and high priority during office hours.

D.

Run the treedelete job with the default impact and priority during out-of-office hours.

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Questions 28

A customer has an Isilon cluster that they want to simplify a Hadoop workflow. The workflow analyzes large amounts of log data written to storage using FTP and results are viewed by Microsoft Windows clients?

How can this be achieved?

Options:

A.

FTP, SMB, and HDFS NameNode and DataNode protocol support on the same file system to enable each workflow step to access data from the same location avoiding data migration.

B.

SyncIQ to migrate the log data between an Isilon cluster and another Hadoop cluster, to retrieve results from the Hadoop cluster, and to store them in an SMB share.

C.

SmartConnect to direct clients to an external Hadoop NameNode and to SMB shares so data ingest, analytics, and results phases are transparently directed.

D.

FTP and SMB protocol support to provide log ingest and Windows clients; SmartPools will stub to HDFS helping to reduce the frequency of external data migration.

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Questions 29

A cluster has user quotas configured for user’s home directories with hard limits and advisory limits set. What would the default setting be for calculating user quotas on the cluster?

Options:

A.

User data and data protection overhead only

B.

User data only

C.

User data, snapshot data, and data protection overhead

D.

User data and snapshot data only

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Questions 30

What is the recommended namespace path for the access zone on a new Isilon cluster with SyncIQ license?

Options:

A.

/ifs//data

B.

/ifs///data

C.

/ifs//data

D.

/ifs///data

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Questions 31

A hospital is considering using Isilon to store their archived medical images and Genomic Sequencing data. They currently have 56 TB of PACS images and 24 TB of genomic data, and expect to double their capacity requirements this year. They will replicate to a DR cluster, and plan to use N+2 protection. The production workload needs to be run at either site.

Which minimum cluster configuration, at each site, including software, would meet this customer's environment?

Options:

A.

Five X400 (2 TB drives) nodes with SyncIQ.

B.

Four NL400 (3 TB drives) nodes with SyncIQ.

C.

Seven X200 (3 TB drives) nodes with SyncIQ and SnapshotIQ

D.

Five X400 (2 TB drives) nodes with SnapshotIQ.

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Questions 32

In your second meeting with the customer you ask the following questions about their current unified SAN and NAS platform.

"Are you using an application to map users from NFS Exports to SMB shares? Is each site a separate LDAP or AD Domain?"

What functionality are your trying to understand in their environment and what is the comparable feature in Isilon OneFS?

Options:

A.

Identity Mapping and Authentication Sources

B.

User Management and AD Authentication

C.

Kerberos Infrastructure and Identity Management

D.

NFS Export Management and OneFS Cluster Management

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Questions 33

-- Exhibit --

We have been engaged by a research hospital to help upgrade their Isilon installation. They currently have 12 previous generation Isilon nodes with 200TB of capacity and run on a 1Gbps network. They currently have 6 Illumina Hi-Seq Sequencers and an HPC cluster to process data. They would like to expand Isilon to 2PB of active data and 1PB of archive data. They use a third party data and metadata management service (IRODs) to stage data for analysis. The Isilon cluster is mainly used for analysis work with the HPC cluster.

-- Exhibit --

Currently, the workflows are being limited by the network access to the Isilon cluster.

What would result in the fastest possible network throughput?

Options:

A.

Move analysis infrastructure to dedicated 10G network.

B.

Add four A-Series accelerator nodes.

C.

Use LACP to aggregate the network connections.

D.

Implement jumbo frames.

Buy Now
Questions 34

At a minimum, how many connected and available nodes are required to maintain quorum in a 25-node cluster?

Options:

A.

10

B.

12

C.

13

D.

17

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Questions 35

At which level can retention periods be applied with Isilon SmartLock?

Options:

A.

Directory

B.

Node

C.

File system

D.

Cluster

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Questions 36

Which Isilon job periodically checks disk sectors to ensure they can be read?

Options:

A.

MediaScan

B.

IntegrityScan

C.

Dynamic Sector Repair

D.

Isilon Data Integrity

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Questions 37

Which Isilon OneFS job, that runs manually, is responsible for examining the entire file system for inconsistencies?

Options:

A.

IntegrityScan

B.

MediaScan

C.

AutoBalance

D.

FlexProtect

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Questions 38

An Isilon has two ports configured per node. Each port is on a different VLAN. Although incoming traffic is evenly distributed, transmitted data from the Isilon uses one port more than the other port. What could be the cause of this imbalance?

Options:

A.

Static routes are configured on the less-used port

B.

A default gateway was not configured on both ports

C.

Source Based Routing is not enabled on the cluster

D.

Priority of the gateway in the less-used port set too low

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Questions 39

What is the maximum number of data stripes in a Gen 6 Isilon?

Options:

A.

16

B.

20

C.

128

D.

144

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Questions 40

A customer's cluster contains three X200 (24 GB RAM, 3 TB drives) nodes, and three X400 (48 GB RAM, 1 TB drives) nodes. All nodes are configured in a single pool. All data is protected at N+2. After upgrading OneFS to 7.0, the Isilon Web interface indicates that files are not fully protected.

What should be done to correct this situation?

Options:

A.

Recreate the original pool using the Isilon Web interface

B.

Add 24 GB RAM to each of the X200 nodes

C.

Recreate the original pool using the command line interface

D.

Add two X200 nodes and two X400 nodes

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Questions 41

What is appropriate for capturing packets for later analysis of I/O request sizes and randomness on Isilon clusters?

Options:

A.

Wireshark

B.

tcpdump

C.

iostat

D.

Mitrend

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Questions 42

When designing Isilon solutions, which issue should you pay special attention to?

Options:

A.

Meet customer expectations

B.

Create a workflow document

C.

Conduct stakeholder interviews

D.

Follow all SSD sizing rules

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Questions 43

A customer has an Isilon cluster with 6 nodes and a single 4-core CPU per node. The default configuration for SyncIQ workers per CPU core and SyncIQ workers per node per job limits are used.

How many SyncIQ workers are available for the Isilon cluster?

Options:

A.

24

B.

64

C.

96

D.

192

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Questions 44

What determines how a user is directed to the correct secure multi-tenancy access zones?

Options:

A.

External protocols

B.

Isassd daemon

C.

External providers

D.

Incoming IP

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Questions 45

A customer plans to deploy N+2:1 protection on a 5-node Isilon cluster. How much capacity will be used to store a 320 KiB file?

Options:

A.

320 KiB

B.

448 KiB

C.

576 KiB

D.

640 KiB

Buy Now
Questions 46

Your customer manages a print media environment, consisting of three Isilon clusters, which are out of support. The customer would like to have access to new software releases and feature sets. You have been asked to perform a full discovery of the customer’s environment.

The customer's current Isilon clusters are as follows:

“Cust” (12 x 12000X) serves as upload media storage for different tenants.

“Working” (8 x 12000X + 6 x X200) serves as a working zone for extraction to RAW and printing media from it.

“Archive” (16 x 72NL + Accelerator nodes) is used to store printed content for six months.

The customer operates in a Windows environment using SMB 2.0, two DNS servers per AD forest, three forest domains which are servicing three different environments. All servers are operating on a 1Gb network, three VLANs segregating the DEV/QA/PROD environments. Currently, there is no monitoring in place for performance measurement or optimization.

The requirements for this solution include:

  • Better ROI and TCO
  • Maintain same performance with possible improvements
  • Renew HW/SW and get inclusive support
  • Limit migrations
  • Reduce space, power, cooling consumption
  • Get new feature sets
  • If migration required, use Parallel copy (multiple nodes, multiple threads, multiple connections)
  • Segregate tenant shares from other tenants
  • Expand up to 1PB of total storage

What would you recommend be done to consolidate the three clusters into one?

Options:

A.

• Expand the largest and most I/O intensive cluster using SmartFail• Consolidate the remaining two clusters using Multithreaded version of RoboCopy• Modify A-Record and propagate to all DNS servers to point to the new cluster

B.

• Leave the clusters as is• Upgrade drive sizes to meet the customer requirements

C.

• Expand the largest and most I/O intensive cluster using SmartFail• Consolidate the remaining two clusters using SyncIQ

D.

• Build a new cluster for consolidation• Use SnapshotIQ to migrate the existing data onto the new consolidated cluster• Spoof DNS to point to the new cluster

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Questions 47

A customer created one month of snapshots; one snapshot every 8 hours for 30 days on an Isilon cluster using SnapshotIQ. They are now deleting the snapshots randomly and experiencing overhead to the cluster.

How can the snapshots be removed while avoiding the overhead caused by this process?

Options:

A.

Delete the snapshots in order

B.

Use SmartPools to move the snapshot data to a different tier

C.

Snapshots cannot be deleted

D.

Remove the directory

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Questions 48

Which provider supports authentication and lookup facilities for local users and groups that have been defined and are maintained on the cluster?

Options:

A.

AD

B.

File

C.

NIS

D.

Local

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Questions 49

Your customer is looking for a storage solution that will be able to store seven million 3 MB files which are written and seldom accessed. Read and write operations are both completed by a web-based application, which requires 1.3 Gbps throughput. The customer's network has not been upgraded in many years, so the network interfaces are 1 Gbps.

What would be the best solution for this network configuration?

Options:

A.

Use LACP to aggregate the network ports on each node.

B.

Use jumbo frames to compensate for the 1GB Core network.

C.

Aggregate Infiniband (IB) ports across all nodes.

D.

Bond EXT-0 across all nodes.

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Questions 50

Your customer purchased an Isilon cluster with eight X400 nodes for Home Directories. Your follow-up discussions have uncovered an opportunity to expand the cluster to support the Legal Department. As you prepare to complete the Workflow Profile Document, you meet with the customer to discuss data protection.

Which key areas should you address?

Options:

A.

Default Cluster Protection LevelAdditional Directory Level ProtectionsSnapshots and Replication

B.

WORM requirementsNetwork ports for replicationSnapshots for user restores

C.

Default Cluster Protection LevelBackup Windows and ProcessesConcurrency of user access

D.

Protocols (SMB, NFS, FTP, HTTP, HDFS)Authentication and Directory ServicesPerformance and Latency Concerns

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Questions 51

A telecommunications company has a substantial amount of data. This data is being created by network elements within their environment.

The company wants to change the way the network elements Call Detail Records (CDR) are stored and analyzed. The existing infrastructure consolidates all of the CDRs into a table structure, and then ingests them into a large database. Once ingested, a query engine accesses the database and performs analysis on these files. The system is functional; however, since the amount of CDRs generated will increase exponentially over the next year, the company is open to alternatives for storing and analyzing these records.

In evaluating alternatives, the key requirements are to reduce cost, the amount of storage, and the amount of time to analyze the data. The customer would like to use Hadoop to analyze the CDRs.

After you have conducted an assessment of the workflow, you have recommended an Isilon Cluster to work within the Hadoop environment.

Considering the customer's requirements, which is the best node type for the Isilon cluster?

Options:

A.

NL400 with 48GB RAM and no SSDs per node

B.

X400 with 96GB of RAM and no SSDs per node

C.

X400 with 24GB RAM and 1.6TB of SSD per node

D.

X200 with 24GB of RAM and 1.2TB of SSD per node

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Exam Code: E20-555
Exam Name: Isilon Solutions and Design Specialist Exam for Technology Architects
Last Update: Apr 22, 2024
Questions: 344

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