Comments on: An SLA for Amazon S3 http://www.itwriting.com/blog/355-an-sla-for-amazon-s3.html Tech writing blog Sun, 12 Feb 2012 05:28:38 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Bernd Eckenfels http://www.itwriting.com/blog/355-an-sla-for-amazon-s3.html/comment-page-1#comment-112337 Bernd Eckenfels Thu, 23 Oct 2008 21:58:26 +0000 http://www.itwriting.com/blog/?p=355#comment-112337 S3's availability is based on failed service requests, but they make no claim about data loss. So if we asume a lost file results in 100% failed requests for that file, you only get a 25% discount, which is most likely not very helpfull to business. So yes, an insurance is needed here. Cloud Service Providers are much more like an internal IT departement (which you cannot manage but is highly skilled). You still have all the risk. One needs to undersand this and accept it as an advantage over expensive outsourcing contracts. Gruss Bernd S3′s availability is based on failed service requests, but they make no claim about data loss. So if we asume a lost file results in 100% failed requests for that file, you only get a 25% discount, which is most likely not very helpfull to business.

So yes, an insurance is needed here. Cloud Service Providers are much more like an internal IT departement (which you cannot manage but is highly skilled). You still have all the risk. One needs to undersand this and accept it as an advantage over expensive outsourcing contracts.

Gruss
Bernd

]]> By: Down For You Too? http://www.itwriting.com/blog/355-an-sla-for-amazon-s3.html/comment-page-1#comment-111763 Down For You Too? Sun, 19 Oct 2008 06:57:35 +0000 http://www.itwriting.com/blog/?p=355#comment-111763 For any hosting company, make sure you understand their guarantee when they say something like "4 nines guaranteed!!" - the guarantee can mean "or your money back" OR it can mean they will actually deliver this amount of uptime no matter what (based on years of past reliability). Most people want the actual uptime, not the money back on terrible service! (small consolation if you lost business through downtime) (as Tim says too) For any hosting company, make sure you understand their guarantee when they say something like “4 nines guaranteed!!” – the guarantee can mean “or your money back” OR it can mean they will actually deliver this amount of uptime no matter what (based on years of past reliability). Most people want the actual uptime, not the money back on terrible service! (small consolation if you lost business through downtime) (as Tim says too)

]]> By: Tim http://www.itwriting.com/blog/355-an-sla-for-amazon-s3.html/comment-page-1#comment-38198 Tim Tue, 09 Oct 2007 17:50:24 +0000 http://www.itwriting.com/blog/?p=355#comment-38198 <blockquote> It strikes me that an enterprise wants to find a third-party insurer, if the amazon remedy is insufficient to protect against business-interruption losses for failures covered inadequately in the SLA. </blockquote> I agree. But you have to ask: what is the value of the SLA if your only recompense is 25% of the cost, when it's likely that business interruption is far more expensive? Tim

It strikes me that an enterprise wants to find a third-party insurer, if the amazon remedy is insufficient to protect against business-interruption losses for failures covered inadequately in the SLA.

I agree. But you have to ask: what is the value of the SLA if your only recompense is 25% of the cost, when it’s likely that business interruption is far more expensive?

Tim

]]> By: orcmid http://www.itwriting.com/blog/355-an-sla-for-amazon-s3.html/comment-page-1#comment-38197 orcmid Tue, 09 Oct 2007 17:44:07 +0000 http://www.itwriting.com/blog/?p=355#comment-38197 It strikes me that an enterprise wants to find a third-party insurer, if the amazon remedy is insufficient to protect against business-interruption losses for failures covered inadequately in the SLA. The premium negotation might lead to some sharp cost analysis of alternatives. It strikes me that an enterprise wants to find a third-party insurer, if the amazon remedy is insufficient to protect against business-interruption losses for failures covered inadequately in the SLA.

The premium negotation might lead to some sharp cost analysis of alternatives.

]]> By: Nick http://www.itwriting.com/blog/355-an-sla-for-amazon-s3.html/comment-page-1#comment-38186 Nick Tue, 09 Oct 2007 16:45:44 +0000 http://www.itwriting.com/blog/?p=355#comment-38186 Amazon has had several major outages over the past year, I bet that SLA would have come in handy then. Take a look at Nirvanix. Amazon has had several major outages over the past year, I bet that SLA would have come in handy then. Take a look at Nirvanix.

]]>