Cloud

Cloud

1. Host resource allocation

   • Compute resources
     • processor
       • CPU
     • disk
       • rotational disk
       • solid state drive
       • controller cards
       • disk arrays
       • host bus adapter
       • network storage transmission media
     • network
       • NIC
       • pysical transmission media
     • memory
       • physical banks of RAM
   • quota
     • upper limit of resource usage according SLAs rules that enforce limits
   • limit
     • hard
     • soft
   • Licensing
   • Reservations
     • lower limit guaranteed
   • resource pools
     • portions of compute resources

2. Optimizing performance

   • memory
     • memory ballooning
       • retrieve unused memory from VM and share with other VMs
     • swap disk space
   • processor
   • disk

3. Cloud Service Models

   • IaaS
     • used by administrators
   • PaaS
     • used by developers
   • SaaS
     • used by end users
   • DBaaS
   • CaaS
   • BPaaS
   • XaaS

4. Cloud Delivery Models

   • private cloud
   • public cloud
   • hybrid cloud
   • community cloud
   • on/off-premise
   • orchestration platforms

5. Cloud Characteristics and Terms

   • elasticity
   • On-demand self-service
     • cunsumer can provision computing capabilities without requiring human interaction with service provider
   • pay-as-you-grow
   • chargeback
   • Broad network access
   • Resource pooling

6. Object Storage

   • Object Storage Device (OSD)
     • vs block storage device HDD
   • Object
     • Metadata
     • Object ID
   • Partition
   • Object BLOB
   • Object Storage Policy
     • Data retention
     • Data backup
     • Data replication
       • in the event of a catastrophe
     • User metadata
     • System metadata
     • Frequently accessed data migrated to SSD
   • Access
     • Web Services
       • SOAP (stateful)
       • REST (stateless)
   • OpenStack Object Storage API
   • Container

7. Virtualization

   • Server/HW/Platform virtualization
     • Full
       • Virtual Machine Monitor (VMM) or Hypervisor
     • Para
       • Hypercalls
     • OS
       • Shared OS
       • Multiple independent virtual containers
   • Storage virtualization
     • Block virtualization
     • File virtualization
     • Implemented through Software Virtualization Manager
   • Application virtualization
     • Application Streaming
     • Remote Desktop Services
     • Desktop Virtualization

8. I/O Throttling

   • limit I/O for specific VM

9. I/O Tuning

   • whihc resources are needed for specific performance