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The questions for E20-526 were last updated on Apr 22, 2026.
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Which part of the XtremIO architecture do host ports use to access an XtremIO volume?
All XtremIO's enterprise features (including Inline Data Reduction, snapshots, XDP, HA, etc.) have been developed as part of the scale-out architecture. All data and metadata are evenly distributed across the entire cluster. I/Os are admitted to the array via all the host ports, utilizing SAN zones and multi-pathing.
References: Introduction to the EMC XtremIO STORAGE ARRAY (April 2015), page 39
A customer wants to use the Cinder driver to manage XtremIO storage in an OpenStack environment. What is a potential concern?
Where is the XtremIO VSS hardware provider package installed?
In order to use the XtremIO VSS provider it must be installed on the server where we want to do an application consistent snapshot.
References:http://muegge.com/blog/tag/xtremio/
When using XtremIO storage with Solaris (SPARC), what is the EMC recommended I/O size that will deliver sequential I/O more efficiently to XtremIO?
EMC recommended setting for Solaris include that the /etc/system file be modified to include the following parameter:
* Set maximum IO size
set maxphys = 0x400000
This also requires increase of the maximum I/O size for the disk driver. The corresponding entry and file for this change are different for different Solaris versions, as follows:
For Solaris 10 (SPARC):
File: /kernel/drv/ssd.conf
Setting: ssd_max_xfer_size=0x400000;
For Solaris 10 (x86):
File: /kernel/drv/sd.conf
Setting: sd_max_xfer_size=0x400000;
Etc.
References:EMC Host Connectivity Guide for Oracle Solaris, page 167
https://www.emc.com/collateral/TechnicalDocument/docu5132.pdf
Which operation is performed when an XtremIO Snapshot is created?
When a snap is created, the following steps occur:
1) Two empty containers are created in-memory
2) Snapshot SCSI personality is pointing to the new snapshot sub-node
3) The SCSI personality which the host is using, is linked to the second node in the internal data tree
References: EMC RECOVERPOINT REPLICATION OF XTREMIO, Understanding the essentials of RecoverPoint Snap-based replication for XtremIO, page 8
https://www.emc.com/collateral/white-papers/h14296-wp-recoverpoint-replication-of-xtremio.pdf
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