diff --git a/man/man4/zfs.4 b/man/man4/zfs.4
index e20d601340c6..677eb9a8df3a 100644
--- a/man/man4/zfs.4
+++ b/man/man4/zfs.4
@@ -1898,7 +1898,7 @@ When disabled, the memory limit may be exceeded by fast disks.
 Freezes a scrub/resilver in progress without actually pausing it.
 Intended for testing/debugging.
 .
-.It Sy zfs_scan_vdev_limit Ns = Ns Sy 4194304 Ns B Po 4 MiB Pc Pq int
+.It Sy zfs_scan_vdev_limit Ns = Ns Sy 16777216 Ns B Po 16 MiB Pc Pq int
 Maximum amount of data that can be concurrently issued at once for scrubs and
 resilvers per leaf device, given in bytes.
 .
diff --git a/module/zfs/dsl_scan.c b/module/zfs/dsl_scan.c
index f9e437f0c947..67c7771d4836 100644
--- a/module/zfs/dsl_scan.c
+++ b/module/zfs/dsl_scan.c
@@ -147,7 +147,7 @@ static int zfs_scan_strict_mem_lim = B_FALSE;
  * overload the drives with I/O, since that is protected by
  * zfs_vdev_scrub_max_active.
  */
-static uint64_t zfs_scan_vdev_limit = 4 << 20;
+static uint64_t zfs_scan_vdev_limit = 16 << 20;
 
 static uint_t zfs_scan_issue_strategy = 0;