>If for example you save all your tax-related documents in Glacier, then you are audited then the accounts department or the government will want all the information. Not 5% of it. Not 10% of it. Everything.
Are you sure about that? I haven't worked with tax litigation specifically, but I've worked with e-discovery w.r.t. e-mail and I can assure you that no one ever asks for all the e-mails sent by a particular company over all time. It's always a matter of asking for the e-mails sent by or received by a select group of people, over a fairly discrete time period. For something like this, a Glacier store might make sense, if it was coupled with an online metadata cache stored in e.g. S3.
With tax litigation the issue is that you have to prove you didn't simply shift money and accounting briefs around, and the only way to realistically prove it is to show all the statements in the time period that you'd required to keep them (I think that's the last 6 years).
The government basically comes to you and says they think you owe X, and you have to prove that false to their satisfaction. The more data you give your CPA to work with, the better.
Are you sure about that? I haven't worked with tax litigation specifically, but I've worked with e-discovery w.r.t. e-mail and I can assure you that no one ever asks for all the e-mails sent by a particular company over all time. It's always a matter of asking for the e-mails sent by or received by a select group of people, over a fairly discrete time period. For something like this, a Glacier store might make sense, if it was coupled with an online metadata cache stored in e.g. S3.