Ορολογία της Ημέρας (T.O.D) – 8/2/2017 [Hybrid Cloud Storage]

hybrid cloud storage

Hybrid cloud storage is an approach to managing storage that uses both local and off-site resources.

Hybrid cloud storage is often used to supplement internal storage with public cloud storage. Policy engines keep frequently used data on-site while simultaneously moving inactive data to the cloud in a transparent manner.

Ideally, a hybrid cloud implementation behaves as if it is homogeneous storage. Hybrid cloud storage is most often implemented by using proprietary commercial storage software, by using a cloud storage appliance that serves as a gateway between on-premise and public cloud storage or by using an application program interface (API) to access the cloud storage.

by TechTarget.com

IV

Ορολογία της Ημέρας (T.O.D) – 3/2/2017 [Hypervisor-aware storage]

Hypervisor-aware storage is a category of storage array that provides administrators with the ability to correlate an application on a virtual machine (VM) with the underlying physical storage.

One of the challenges of traditional storage systems in server virtualization environments has been provisioning and managing storage at the logical unit number (LUN) level. Typically, a LUN is assigned to a physical server and storage from the LUN is then assigned to a VM. Continue reading

Ορολογία της Ημέρας (T.O.D) – 28/1/2017 [Memory Ballooning]

Memory ballooning is a memory management technique that allows a physical host to take advantage of unused memory on its guest virtual machines (VMs).

When a host OS is short on physical memory, the hypervisor polls balloon drivers installed on the guests to request available memory. The guests respond by using page-reclaiming algorithms to determine which pages are available and can be assigned to the balloon drivers. The process of assigning available pages to the driver is known as inflating the balloon. Releasing available pages is known as deflating the balloon. Continue reading

Ορολογία της Ημέρας (T.O.D) – 25/12/2016 [Cloud Orchestrator]

A cloud orchestrator, also called a cloud service orchestration platform, is software for managing interconnections and interactions among cloud-based and on-premises business units.

The goal of cloud orchestration is to automate the configuration, coordination and management of software and software interactions in a distributed computing environment so that intercomponent and interapplication links are correctly established and maintained. Continue reading

Ορολογία της Ημέρας (T.O.D) – 18/12/2016 [Bring Your Own Cloud]

BYOC (bring your own cloud) is the trend towards allowing employees to use cloud application or cloud storage services of their choice in the workplace.

In a small or mid-size business, allowing employees to use public cloud services like Google Apps or Dropbox may be more cost-effective than rolling out the shared service internally. Problems can occur, however, when employees fail to notify anyone when they use such services. The use of any shadow IT can pose security and compliance concerns in the workplace and BYOC in particular can prevent business owners from knowing exactly where their company’s information is being stored, who has access to it and what it’s being used for.

To prevent BYOC from becoming a problem, businesses should implement policies that strictly define what personal cloud services can be used for work-related tasks (if any) and who needs to be notified when a personal cloud service is used.

Ορολογία της Ημέρας (T.O.D) – 12/02/2016 [bucket (AWS bucket)]

bucket (AWS bucket)

A bucket is a logical unit of storage in Amazon Web Services (AWS) object storage service, Simple Storage Solution (S3). Buckets are used to store objects, which consist of data and metadata that describes the data.

An S3 customer must create a bucket before he can store data in Amazon’s public cloud and specify access privileges for the bucket by using the AWS Policy Generator. Although customers are not charged for creating buckets, they are charged for storing objects in a bucket and for transferring objects in and out of buckets.

There is no limit to the number of objects a customer can store in a bucket, but each AWS account can only have 100 buckets at one time.

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Ορολογία της Ημέρας (T.O.D) – 17/01/2016 [Cloud Sprawl]

[Cloud sprawl] (αγγλική γλώσσα)

“Cloud sprawl is the uncontrolled proliferation of an organization’s cloud instances, services or providers. Cloud sprawl typically occurs when an organization lacks visibility into or control over its cloud computing resources.

Similar to server sprawl or virtual machine sprawl, cloud sprawl usually begins when an organization fails to adequately monitor and manage individual cloud instances. For example, a software developer might launch a new workload in Amazon Web Services (AWS) or deploy a private cloud to test a new software version or database, but then neglect to power down or delete the workload when it’s no longer needed. Because businesses pay for public cloud computing resources every month, the proliferation of unneeded cloud instances can be costly for an enterprise. Continue reading