diff --git a/docs/rfcs/034-direct-io-for-pageserver.md b/docs/rfcs/034-direct-io-for-pageserver.md
index a6a9de514b..b55600832f 100644
--- a/docs/rfcs/034-direct-io-for-pageserver.md
+++ b/docs/rfcs/034-direct-io-for-pageserver.md
@@ -76,6 +76,7 @@ The outcome of the above will be that
 The norm will be very low baseline replacement rates in PS `PageCache`.
 High baseline replacement rates will be treated as a signal of resource exhaustion (page cache insufficient to host working set of the PS).
 It will be remediated by the storage controller, migrating tenants away to relieve pressure.
+(Such a migration mechanism in storage controller is not part of this project.)
 
 In the future, we may elminate the `PageCache` even for indirect blocks.
 For example with an LRU cache that has as unit the entire disk btree content