By Abdul Salam
(Real international talents for the CompTIA Cloud+ Certification and past)
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Extra resources for Deploying and Managing a Cloud Infrastructure
Example text
Cloud tenants can also pick and choose which buckets, for example, to encrypt and which buckets to leave as is. An important thing to note here is that this type of system-generated metadata is derived from the security policy the tenant has specified. System metadata key-value pairs cannot be modified by the cloud tenant. 1 lists some of the system defined metadata. 1 Example of system-defined metadata Key Value Date Object creation date stamp Content-Length Size of the object in bytes Last-Modified Update/modification date stamp Content MD-5 MD5 checksum On top of this metadata, the tenant can create additional key-value pairs.
These applications would have a set of defined users and predictable future resource requirements. Then there are applications for the enterprise that are either consumer facing or the kind that can experience sudden spikes in use. Because the private cloud deployment would entail a company’s own data center with a set number of physical servers, catering to these spikes in usage would mean adding more physical resources into the data center. The other option would be to implement cloud bursting, which would mean that whenever there’s a spike in usage beyond the capacity of the physical resources available within the company’s private cloud, the additional users would all be routed to the public cloud.
Single-Tenant Cloud With a single-tenant cloud, every tenant has physical and not virtual boundaries around the allocated resource pool. This is common in bare metal cloud offerings where the vendor guarantees physical resource allocation for a tenant and commits to not packing multiple users on the same pool of physical resources. Offering single tenancy within a bare metal cloud offering is relatively easier than offering single tenancy or physical segregation within a virtualized cloud offering.