RESEARCH, DEVELOPMENT, TEST AND EVALUATION
also include the small collection of serv- ers and networking kits Soldiers take to the field today, or any hardware combi- nation thereof.
For DOD, acquiring and maintaining this hardware is a challenge because the uncer- tain nature and scale of conflict make it difficult to target investments, not only in acquisition but also in people. Cloud has become a way to offload expertise requirements and hardware investments while allowing for instant flexibility—if you need more computing and stor- age resources, you pay for them, click a button and they are instantly available. When they are no longer needed, you simply delete the resources you used and can reduce your cost rather than sinking an unused investment and obligation in equipment and people. However, for the tactical and operational Army, access to online cloud computing resources means bringing cloud computing resources into the field—or drastically increased reliance on the expeditionary network systems, often with bandwidth restrictions, that reach back to centralized cloud locations. Doing this in a way that meets today’s mission needs and the unknown needs of the future is a major concern.
Te vision most have of the cloud is that it's just someone else’s computer or data center somewhere that cannot be touched or controlled. Tis is one of numerous models when it comes to cloud comput- ing, called off-premise public cloud, which intends to serve numerous tenants with common cloud computing requirements. Tere are other models for cloud comput- ing that start to combine both public and private cloud offerings that can be delivered in both off- and on-premises architectures. Designers and engineers can structure those different cloud envi- ronments to function as one hybrid cloud.
CLOUD IN MANY FORMS
Understanding how the Army and DOD are approaching cloud imple- mentation starts with defining these different cloud models.
Hyperscale and Off-Premises Modern off-premises hyperscale cloud involves multiple (usually large) data centers with the ability to replicate data and load-balance access at large and robust scales. When you become a tenant of one of these cloud providers, you are renting a set of components of that infrastruc- ture for use, just like renting an apartment. Depending on the agreement and cost, where and how mission-critical data is replicated and load- balanced can vary. Most cloud providers replicate data between zones within a geographically similar region—enabling load balancing and resil- ience of service—but can be expanded to multiregion to guard against catastrophic failure such as an earthquake, flood or malicious attack that could compromise geographic power or network connectivity.
On-Premises Cloud When it comes to on-premises cloud computing serving DOD needs specifically, the community has been practicing this in select IT spaces for some time now. On-premises means services are physically in the organization’s owned facilities. This could be on organization-owned equipment or equipment provided by a second or third party, such as Amazon’s Snowball line or Microsoft’s Azure Stacks. The burden of power, space, cooling and external connectivity are the minimum responsibilities of the hosting organization. Other responsibilities vary based on what services and agreements are procured with a service provider. This model provides the most autonomy for an organization but comes at the cost of dynamic flexibility.
Hybrid As the world becomes more connected, industry is reevaluating how to design its systems to take full advantage of the value of cloud comput- ing. For sectors like the oil and gas industry, where companies often operate within remote and challenged environments, a hybrid cloud architecture serves both local and global cloud computing needs. This model attempts to take the best of both previous models so that when you have connectivity, you have access to the resources available in hyperscale (robust, on-demand and flexible), and when your connec- tion is disadvantaged or contested, you have critical services locally hosted with you. In the tactical space, this is the design we must strive for. There are times on the battlefield where loss of certain services could lead to unacceptable loss of situational awareness, obstructing command while other less critical services can enhance decision-making on a broad tactical to strategic scale when network connection allows.
https://asc.ar my.mil
33
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132 |
Page 133 |
Page 134 |
Page 135 |
Page 136 |
Page 137 |
Page 138 |
Page 139 |
Page 140
