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]]> By: hariom http://insightstory.net/2009/05/12/computer-devata/comment-page-1/#comment-63 hariom Thu, 14 May 2009 08:32:29 +0000 http://insightstory.net/?p=118#comment-63 I agree, but I am re-stressing the point of cost conscious markets. I mean in US or in develop economies, the static over provisioning of resources (hardware, network and process also), is something which is basic necessity. If you roll out a service (h/w or h/w), before even the feature those markets ask about high availability and reliability and then, even think of considering you. The places which made you wait, were the solutions (not engineered but desired), to be primarily low cost leading to over provisioning. Just an example mobile operator here over subscribes the capacity over the air around 20-50 times. They expect all the subscribers will not call at the same time. This overprovisioning is always there, but here the low costs are driving this fact or oversubscription to crazy limits. he dsl backhaul infrastructure is oversubscribed around 5 times. We make the router. To make one link more reliable, despite making better s/w and h/w, we provide n:1 redundancy where N can be 1-5. We know that customers in US will always configure average redundancy, and intentionally waste the capacity (whole line card and the link both). Take the example of datacenters, the ones which are required for any centralized information processing like banking, railways or aviation which made you wait. The factor of HA and reliability increases the cost significantly right from the enterprise side resources ( end point) to network connectivity to the server farms. When they say server is down, it could be cost cutting into anywhere in this chain. Take the cast of google or facebook, one query on the Internet is posted to around 50 servers in parallel leading typically upto 50 different locations. Thats why on google you rarely see the server is down. Yes in order to accomodate this, the s/w, h/w and system desgin also has to support this and its not purely a function of building more capacity, but cost (as seen by enterprises) is more impacted from more network elements and less from higher quality s/w running inside them. So the IT solutions and infrastructures that have made you have suffered from, party is because of bad design. But in majority cases when impact is this big as you are talking about - waiting for hours, its about making the cheap choices in deployments. I agree, but I am re-stressing the point of cost conscious markets. I mean in US or in develop economies, the static over provisioning of resources (hardware, network and process also), is something which is basic necessity. If you roll out a service (h/w or h/w), before even the feature those markets ask about high availability and reliability and then, even think of considering you.

The places which made you wait, were the solutions (not engineered but desired), to be primarily low cost leading to over provisioning. Just an example mobile operator here over subscribes the capacity over the air around 20-50 times. They expect all the subscribers will not call at the same time. This overprovisioning is always there, but here the low costs are driving this fact or oversubscription to crazy limits.
he dsl backhaul infrastructure is oversubscribed around 5 times. We make the router. To make one link more reliable, despite making better s/w and h/w, we provide n:1 redundancy where N can be 1-5. We know that customers in US will always configure average redundancy, and intentionally waste the capacity (whole line card and the link both).

Take the example of datacenters, the ones which are required for any centralized information processing like banking, railways or aviation which made you wait. The factor of HA and reliability increases the cost significantly right from the enterprise side resources ( end point) to network connectivity to the server farms. When they say server is down, it could be cost cutting into anywhere in this chain. Take the cast of google or facebook, one query on the Internet is posted to around 50 servers in parallel leading typically upto 50 different locations. Thats why on google you rarely see the server is down. Yes in order to accomodate this, the s/w, h/w and system desgin also has to support this and its not purely a function of building more capacity, but cost (as seen by enterprises) is more impacted from more network elements and less from higher quality s/w running inside them.

So the IT solutions and infrastructures that have made you have suffered from, party is because of bad design. But in majority cases when impact is this big as you are talking about - waiting for hours, its about making the cheap choices in deployments.

]]> By: Manas http://insightstory.net/2009/05/12/computer-devata/comment-page-1/#comment-62 Manas Wed, 13 May 2009 05:39:42 +0000 http://insightstory.net/?p=118#comment-62 The point is this - Either make your infrastructure fail-safe (i.e. make sure that you'll never had an issue like server down) or make your processes fail-safe (there is always a way to do this if a server is down). Not doing either is bad. The point is this - Either make your infrastructure fail-safe (i.e. make sure that you’ll never had an issue like server down) or make your processes fail-safe (there is always a way to do this if a server is down).

Not doing either is bad.

]]> By: hariom http://insightstory.net/2009/05/12/computer-devata/comment-page-1/#comment-61 hariom Wed, 13 May 2009 05:35:48 +0000 http://insightstory.net/?p=118#comment-61 Progress is an exchange of one problem with the another. This reliability you have been talking about stems also from the cost implications playing a vita role of developing economies. If the high availability requires static over provisioning of the resources leading to sub-optimal resource consumption, certain markets do not want them. So its a trade offs. Failure is ok as long as its not the final one and we continue to have alternatives to fall back upon. But these alternatives comes at a cost. Progress is an exchange of one problem with the another. This reliability you have been talking about stems also from the cost implications playing a vita role of developing economies.
If the high availability requires static over provisioning of the resources leading to sub-optimal resource consumption, certain markets do not want them. So its a trade offs.
Failure is ok as long as its not the final one and we continue to have alternatives to fall back upon. But these alternatives comes at a cost.

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