Davoud Teimouri - Virtualization and Data Center

Category: Data Storage

Data storage is a recording medium is a physical material that holds information.

FC Port Aggregation (Trunking) 0

Data Center / Data Storage / Server Hardware

Fibre Channel (FC) Trunking (Port Aggregation) on Servers, How It’s Possible?

We are all knowing LACP on ethernet network but Fibre Channel and SAN network providing multipathing I/O by using logical and physical paths as single device on operating system and also using path selecting policies for using I/O paths optimized. But if server using 16Gb/s FC HBA, so there is no bandwidth aggregation. Server can generate bandwidth for each port up to maximum speed of port and also path selecting has performance impact of server when large paths are presented to server. Months before, I was thinking about FC port aggregation and did many searches but I didn’t find anything until now.

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Data Center / Data Storage / Operating System / Reviews

I/O Block Size Best Practice on EMC All Flash/Hybrid Flash Array and Linux (Physical And Virtual)

We have a problem on our Oracle Database servers which are hosting by Oracle Linux servers, when Oracle Databases putting to Maximum Availability protection mode, some workloads impacts performance whole database ecosystem. The workloads are related to some tasks which performed from by application servers and the tasks needs huge read/write I/O on storage arrays. We are using DELL EMC Unity/Unity XT (All Flash/Hybrid Flash) family in most of projects. I did lots of searches and found nothing at first step. I had only one clue, I/O block size was very large during performing tasks by database servers.

Dell EMC Unity XT 0

Data Storage / News

Major Update For DELL EMC Unity/Unity XT OE (5.2.0.0.5.173)

EMC has released new OE (5.2.0.0.5.173) for Unity/Unity XT storage array family with new major changes. The new release also contains lots of resolved issues for different components. The biggest changes are “Data Reduction and Advanced Deduplication” can now be enabled for hybrid storage pools and also dynamic pools will be expanded faster than before.

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Data Center / Data Storage / Reviews

Parallel NFS (pNFS) – Part 1 (Introduction)

Parallel NFS (pNFS) is a part of the NFS v4.1 standard that allows compute clients to access storage devices directly and in parallel. The pNFS architecture eliminates the scalability and performance issues associated with NFS servers deployed today. This is achieved by the separation of data and metadata, and moving the metadata server out of the data path.

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Data Storage

EMC Unity Host Group, Finally Came!

EMC Unity array was released in 2016 to replace VNX and VNXe family with another mid-range array solution. EMC Unity came with lots of new features and enhancements compare to older families but there was an absent feature that VNX offering. Host access method was changed and each LUN should have been present to each host separately. More than 4 years from GA release, we were waiting for changing host access method because presenting LUN to each host was horrible in large scale environment with many hosts and LUNs. Biggest Change In EMC Unity OE 5.1.0.0.5.394 Previous versions have “Consistency...

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Data Center / Data Storage / Virtualization

Enabling Business Continuity By Unity XT Metro Node

Unity XT storage arrays are designed for performance, optimized for efficiency and built to work in multi-cloud environment. Actually Unity XT storage array is mid-range storage array family but this family is capable for enterprise workloads. Enterprise businesses needs protection and needs business continuity solutions. Typically, mid-range storage array has no native business continuity solution but Unity XT offers Unity XT Metro Node as business continuity solution.

EMC Unity 3

Data Center / Data Storage / News

Dell EMC Unity OE 5.0.2.0.5.009

EMC has released new upgrade file for Unity family (5.0.2.0.5.009) but I couldn’t find Release Notes link till now. Seems, the upgrade file is contains some minor fixes and security fixes as well. (Now I know that some issues were major!) The file size is as big as previous releases, but as I know, the below security issues have been fixed on this release. (Thanks to “derWolle“, I don’t know him but he has read the post and sent me the link of release notes: https://support.emc.com/docu97010_Dell-EMC-Unity-Family-5.0.2.0.5.009-Release-Notes.pdf?language=en_US Seems, there is new feature and important fixes: Initially Configuring your Unity syste: When...