EMC E20-526 XtremIO Solutions and Design Specialist Exam for Technology Architects Exam Practice Test

The EMC VPLEX family is the next-generation solution for data mobility and access within, across and between data centers.

VPLEX supports two configurations, local and metro. In the case of VPLEX Metro with the optional VPLEX Witness and Cross-Connected configuration, applications continue to operate in the surviving site with no interruption or downtime. Storage resources virtualized by VPLEX cooperate through the stack, with the ability to dynamically move applications and data across geographies and service providers.

Any copy in the hierarchy tree can be deleted without effecting the parents or children.

IDC outlines a criteria some criteria for selecting a testing tool:

* Generate workloads

* Capture results for analysis:

Throughput

IOPS

Latency

Etc.

References:

EMC XtremIO(All-Flash) : SAN, inline deduplication, 8K fixed chunk size;

References:

The system's Command Line Interface (CLI) allows administrators and other system users to perform supported management operations. It is preinstalled on the XMS and can be accessed using the standard SSH protocol.

PuTTY is an SSH and telnet client.

The standard TCP port 22 has been assigned for contacting SSH servers.

You can login using the builtin xmsadmin account.

References: Introduction to the EMC XtremIO STORAGE ARRAY (April 2015), page 50

EMC XTREMIO 4.0 SYSTEM SPECIFICATIONS

References:

Configuring vSphere Native Multipathing.

For best performance, it is recommended to do the following:

Set the native round robin path selection policy on XtremIO volumes presented to the ESX host.

References:

XtremIO storage is natively thin provisioned, using a small internal block size. This provides fine-grained resolution for the thin provisioned space.

All volumes in the system are thin provisioned, meaning that the system consumes capacity only when it is actually needed. XtremIO determines where to place the unique data blocks physically inside the cluster after it calculates their fingerprint IDs. Therefore, it never pre-allocates or thick-provisions storage space before writing.

References: Introduction to the EMC XtremIO STORAGE ARRAY (April 2015), page 22

Choose an EMC XtremIO system and scale out linearly by adding more XtremIO X-Bricks.

References: y/p/EMC-XtremIO-Flash-Scale-Out

Storage capacity and performance scale linearly, such that two X-Bricks supply twice the IOPS, four X-Bricks supply four times the IOPS, six X-Bricks supply six times the IOPS and eight X-Bricks supply eight times the IOPS of the single X-Brick configuration. However, the latency remains consistently low (less than 1ms) as the system scales out. The sub-millisecond latency is validated by actual test results, and is determined according to the worst-case scenario.

References: Introduction to the EMC XtremIO STORAGE ARRAY (April 2015), page 37