IT Phrase - DATA and Cloud-based DR

All about DATA

1. Data protection is an essential requirement.
2. Data is valuable asset and lifeblood of enterprises
3. The cost of downtime can be thousands of dollar per hour depending on type and size of organisation.
4. The traditional DR model was based on tape backup with secondary backup tapes stored offsite.
5. This model can incur significant downtime, as tape must be retrieved before data and applications can be restored.
6. Organisation required fast restore times replicated data to in their own secondary facilities.
7. RTO - Recovery Time Objectives RPO - Recovery Point Objectives. Both of them are DR metrics requirement need to meet depending on an organisation.
8. Three main cloud DR models. Data only(backup copy of data is available on the cloud platform and data can be accessed from DR location in the cloud), Application based(the DR process focuses on the replicating application data into the cloud to a secondary deployment of the application. Failover 故障转移 consists of repointing access to application running in the cloud(typically through DNS changes), Virtual machine image( the DR process replicates an entire VM image, including data, to the cloud. The VM image is dormant(not running) 休眠的；睡眠的；静止的；潜伏的；匿名的；（动物等）冬眠的 tidak aktif until required )

sources frm:
http://searchdisasterrecovery.techtarget.com/feature/Cloud-based-disaster-recovery-service-grabs-spotlight?utm_medium=EM&asrc=EM_NLN_52095022&utm_campaign=20160107_Advantages%20of%20cloud-based%20disaster%20recovery_esullivan&utm_source=NLN&track=NL-1821&ad=905194&src=905194