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👉 Raid (Redundant Array of Independent Disks): Redundant solution because it allows data to be written to multiple hard disks at the same time. In addition, RAID has many variations that allow to significantly increase the speed of data retrieval from the hard disk, example:  RAID 1 consists of an exact copy (or mirror) of a set of data on two or more disks; 👉 Storage pool : capacity aggregated in a shared storage environment from disparate physical storage resources. 👉 Storage volume : an identifiable unit of data storage. Although a volume might be different from a physical disk drive, it can still be accessed with an operating system's logical interface.  👉  Pwwn (port world wide name): a unique identifier for each Fiber Channel port presented to a Storage Area Network (SAN) 👉    iRMC : Integrated Remote Management Controller. 👉  iDRAC   (The Integrated Dell Remote Access Controller) designed for secure local and remote server management and helps IT administrators de

Service level agreement (SLA): responsible for a set of agreements between a service provider and customer that define the scope, quality and speed of the services being provided. Operational Level Agreement (OLA): an internal agreement that outlines how different departments and teams will support the delivery of services to your clients. OLA SLA Internal-facing between MSP teams and departments External-facing between the MSP ( managed service provider   ) and the client Provide operational workflows and guidelines for collaboration Define the level of service expected by the client Outline key responsibilities, dependencies, and relationships Offer key metrics and KPIs for uptime, response time, resolution time, and availability Affect internal operations and daily efficiency Affects the overall client experience and satisfaction Keep teams in syn