What are common storage array mechanisms?
XtremIO's snapshot technology is implemented by leveraging the content-aware capabilities of the system (Inline Data Reduction), optimized for SSD media, with a unique metadata tree structure.
XtremIO leverages a proprietary flash-optimized data protection algorithm (XtremIO Data Protection or XDP), which provides performance that is superior to any existing RAID algorithm.
References: Introduction to the EMC XtremIO STORAGE ARRAY (April 2015), page 33
A storage administrator wants to re-use some of their XtremIO thin provisioned disks attached to a Microsoft Windows 2012 host. However, the administrator notices that ''Quick Format'' of the drives is taking a long time to complete. This has an impact on the overall performance.
What should be recommended to minimize the performance impact?
It is related to TRIM/UNMAP, which is enabled per default in Server 2012(R2).
A customer wants to use the Cinder driver to manage XtremIO storage in an OpenStack environment. What is a potential concern?
When creating XtremIO volumes for a host, which operating systems will benefit by changing the default logical block size for applications consisting of 4 KB I/Os?
With VMware ESX 5.5, the VMware hypervisor cannot work with LUNs that use a logical block size of 4K. When using VMware, be sure to specify Normal (512 LBs) from your XtremIO array.
A customer has a group of applications that need storage which can provide low response times. The total I/O requirements are 75,000 IOPs with a 4 kB block size. They will have 500 LUNs and need to keep 30 daily snapshots of each LUN.
What is the smallest XtremIO configuration that will meet their needs?