Seven Layers

Still using Vi? I know I still do, and have relied on a saved crib sheet to help me remember. So I have posted it below: STANDARD COMMANDS -- Movement Command Action  h space left  l space right  k line up  j line down  w word forward  b word backward  ) sentence forward  ( sentence backward  H top of screen  L bottom of screen  G last line  nG go to line n  ^E scrolls down by a line  ^D scrolls down by half screen  ^F scrolls down by full screen  ^Y scrolls up by a line  ^U scrolls up by half screen  ^B scrolls up by full screen STANDARD COMMANDS -- Changing Text Command Action  C changes rest of line  cc changes line  cw change word  rx change character at cursor with character x  D delete rest of line  dd delete current line...

I have worked with many customers who build private, hybrid or public cloud infrastructures based in many datacentres. From here, services are created for scalability and consistent performance for demanding yet fluctuating activities for data streaming or e-commerce transactions. However not all datacentres are the same, and the following are a number of questions that should be asked when considering any colocation provider.  1. What Are The Different Types of Datacentre? Datacentres are classified into tiers by a system developed by the  Uptime Institute based  on availability. The system has evolved from a shared industry terminology into the global standard for third-party validation of datacentre critical infrastructure. Datacentre type Characteristics SLA (per annum) Tier IV Two independent power utility supplies Fully redundant (2N+1) Able to sustain 96 hours power outage 99.995% availability 25 mins downtime  Tier III ...