What does Isilon OneFS use to re-write data when a disk read fails?

A.

Dynamic Sector Repair

B.

NVRAM

C.

Isilon Data Integrity

D.

CRC

An Isilon customer is reporting less than expected performance from the cluster and poor
space utilization. The customer is using three X400 nodes with N+2:1 protection policy to
host webserver log data. Upon further analysis, it is discovered that the webservers write
log files 64 KiB in size. The log files are then accessed by an analytics application forreporting.
What should be done to increase write performance of the cluster?

A.

Change the protection scheme to a mirroring policy.

B.

Add A-Series performance accelerator nodes to the cluster.

C.

Add S-Series storage nodes to the cluster.

D.

Add SSDs to the X-Series nodes in the cluster.

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 -
Before making any changes, the customer would like a graphical presentation of their
existing array performance to present to management.
What is the best tool to gather this information?

A.

InsightIQ

B.

isi_netlogger

C.

tcpdump

D.

netstat

A customer plans to migrate data to a remote Isilon cluster. What is a consideration when configuring a cluster
with SyncIQ and hard SmartQuotas?

A.

SyncIQ ignores quota limits during replication but if a quota is over limit, quotas will still allow users to add data to the directory.

B.

Quotas should be configured on both SyncIQ source and target directories prior to a migration.

C.

SyncIQ will replicate source quota configurations to the target.

D.

Quotas should be set only on source directories and never on target directories for migrations.

You are designing an Isilon 5-node cluster configuration for a customer who wants to store
user home directories on the new cluster. Each user has 100 small files of 4KB each, 100
medium sized files of 80KB each, and 100 larger files of 512KB each. How much space is
occupied by the medium sized files data blocks on an N+1n cluster?

A.

9,600KB

B.

15,360KB

C.

16,000KB

D.

25,600KB

A European Sports TV network is considering Isilon for their Media Edit Storage for their editing workloads. They are also considering Isilon for near-line media archiving. The network receives XDCAM HD footage which is loaded onto their existing Transcoding
Storage platform. New footage that needs to be edited will be transferred from their
Transcoding Storage platform to the proposed Media Edit Storage platform at the rate of
ten simultaneous XDCAM HD files via FTP. Edited files will be transferred back to the
Transcoding Storage platform at the rate of ten simultaneous XDCAM HD files via FTP.
The network currently has 15 Final Cut Pro edit stations, 15 Avid edit stations. Proxy
software will be used to allow Isilon to act as the storage for the Final Cut Pro and Avid
media. Three of those edit stations will be performing content compositing as needed.
The network expects 70 hours of new content per week, and 50 hours of edited content per
week. They intend to keep the new and edited content on the proposed Media Edit Storage
as a performance tier for 30 days. They would like to retain all new and edited footage
proposed Media Edit Storage as a near-line tier for two years.
In addition to the current workloads, the network expects to implement a new Media Asset
Management (MAM) solution and has requested the Isilon cluster be capable of supporting
120 MBps read and 120 MBps write to support the MAM requirements.
- Exhibit -
Refer to the exhibit.

Based on the described use of the cluster, what are the customer's capacity requirements?

A.

30 days retention: 15 TB; 2 years retention: 360 TB

B.

30 days retention: 5 TB; 2 years retention: 120 TB

C.

30 days retention: 1 TB; 2 years retention: 24 TB

D.

30 days retention: 30 TB; 2 years retention: 720 TB

Which block size does Isilon SyncIQ use to transfer data?

A.

2 KB

B.

4 KB

C.

6 KB

D.

8 KB

A customer is having problems writing data to their Isilon cluster. You have checked all
network settings and authentication sources. No errors are reported from the cluster. The
customer runs tcpdump and sends the results to you.
Now that you have the output, which tool would you use to open the results file?

A.

IOZone

B.

Wireshark

C.

MiTrend

D.

Iometer

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?

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

Which OneFS feature enables you to host multiple tenants from mutually untrusting AD
authentication environments from the same DNS namespace?

A.

SmartConnect

B.

Groupnets

C.

SmartQuotas

D.

Acces Zones