1.Volume storage (block storage): includes volumes/data stores attached to IaaS instances,,Usually a visually hard drive .Should provide redundancy.
2.Object Storage: Example-Dropbox.used for write-once ,read many,not suitable for applications like databases.
+ Replication is not complete until all versions have been synchronized,which may take time.
3.Because of varying laws and regulations,customers should always know where their physical data is stored know where their physical data is stored and is stored in compliance with their needs - LOCATION is primary concern in relation to regulations.
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