# Key-value sizes at DR source and destination have a big difference

**URL:** https://forums.foundationdb.org/t/key-value-sizes-at-dr-source-and-destination-have-a-big-difference/3351
**Category:** Using FoundationDB
**Created:** [June 1, 2022, 7:03pm UTC](https://forums.foundationdb.org/t/key-value-sizes-at-dr-source-and-destination-have-a-big-difference/3351 "2022-06-01T19:03:44Z")
**Posts on this page:** 1
**Showing post:** 4

<div class="post-metadata">

### Author: ![SteavedHams](https://sea1.discourse-cdn.com/foundationdb/user_avatar/forums.foundationdb.org/steavedhams/32/18_2.png) [@SteavedHams](https://forums.foundationdb.org/u/SteavedHams)
#### Post date: [June 9, 2022, 7:59pm UTC](https://forums.foundationdb.org/t/key-value-sizes-at-dr-source-and-destination-have-a-big-difference/3351/4 "2022-06-09T19:59:06Z")

</div>

If the source cluster has run many full backups it may also be accumulating metadata in the system space which would not be replicated to the destination cluster. More details in another [thread](https://forums.foundationdb.org/t/increased-system-keyspace-size-after-backups-finish/3321/6).

---

_[View the full topic](https://forums.foundationdb.org/t/key-value-sizes-at-dr-source-and-destination-have-a-big-difference/3351)._