Data storage is a recording medium is a physical material that holds information.
Reviews / Data Storage / Virtualization
by Davoud Teimouri · Published 12/02/2023 · Last modified 08/06/2023
Virtual Machine Identification (VMID or VM-ID) is a technology for tracking virtual machine I/O between virtual machine and SAN target. VM-ID can be used by hypervisor and FC switch to trace generated I/O by specific VM. As result, we can optimize whole SAN area for VI workload and non-VI workloads would be achieved.
Data Storage / Backup & Replication / Reviews
by Davoud Teimouri · Published 04/02/2023 · Last modified 10/06/2023
DELL EMC PowerProtect Appliance has two types currently. We’ll review difference between two types at this post.
Server Hardware / Data Center / Data Storage
by Davoud Teimouri · Published 07/08/2022 · Last modified 08/06/2023
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.
Data Center / Data Storage / Operating System / Reviews
by Davoud Teimouri · Published 13/05/2022 · Last modified 16/06/2023
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.
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.
Data Storage / Free Tools / Reviews
by Davoud Teimouri · Published 07/01/2022 · Last modified 17/06/2023
As the world’s leading provider of Software-Defined Storage, High Availability, and Disaster Recovery software, LINBIT adds server clustering capabilities to any containerized, virtualized, or bare metal environment.
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.
Reviews / Data Center / Data Storage
by Davoud Teimouri · Published 31/12/2021 · Last modified 17/06/2023
Ceph is most popular software-defined storage platform and offers Objec-Storage, Block Device and File System (CephFS) for storing data in modern data centers or public and private clouds. Best and popular solutions needs alternatives as well. So at this post, we’ll review some alternatives for Ceph.
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...
Data Center / Data Storage / Virtualization
by Davoud Teimouri · Published 08/07/2021 · Last modified 21/07/2023
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.
