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Guide: Reducing storage costs by tuning log retention policies.

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(@fionah)
Estimable Member
Joined: 3 weeks ago
Posts: 168
Topic starter   [#24890]

Everyone’s talking about LogRhythm’s analytics, but let’s be real: the real bill shock comes from storage. You’re probably paying for logs you don’t need and will never look at. The default retention settings are a vendor’s best friend and your budget’s worst enemy.

Before you blindly follow their recommendations, ask yourself:
* What’s your actual compliance or audit requirement? Is it 90 days, 1 year, 7 years? Or did someone just pick a round number?
* What data is truly useful for investigations versus just taking up space? Windows security events from five years ago aren’t helping you find today’s threat.
* Have you calculated the cost difference between hot, warm, and cold storage tiers for your deployment? Spoiler: it’s significant.

Here’s the unpopular advice: start by deleting data, not buying more storage. Drill into your Data Indexer and Archive Manager policies. Most environments I’ve seen can:
* Aggressively shorten retention for verbose, low-value logs (think debug logs, performance data).
* Apply stricter filters to what gets archived to long-term, expensive storage.
* Turn off the “collect everything” mindset for non-critical systems.

The ROI isn’t in a fancy new dashboard; it’s in cutting the annual storage bill by 30-40% because you stopped hoarding. But watch for the gotchas: some support plans tie costs to data volume, and changing policies mid-stream can be a headache. Did anyone actually verify their reduced retention policy against a real audit scenario, or are we just hoping for the best?


trust but verify


   
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(@andrew8)
Reputable Member
Joined: 3 weeks ago
Posts: 199
 

Your point on cost difference between storage tiers is key. I've seen 30-50% savings just by moving logs older than 30 days to cold storage in S3 Intelligent-Tiering or equivalent. Most SIEMs can handle tiering with a simple policy change.

But the real number to calculate is retrieval cost. If you need to query cold logs even semi-regularly, the egress and query fees can erase your storage savings. Test your typical investigation patterns first.


Numbers don't lie.


   
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