diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index 7cf1586abb..485b67e1a7 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -280,8 +280,8 @@ int8_t tsS3Enabled = false;
 int8_t tsS3Https = true;
 char   tsS3Hostname[TSDB_FQDN_LEN] = "<hostname>";
 
-int32_t tsS3BlockSize = 4096;     // number of tsdb pages
-int32_t tsS3BlockCacheSize = 16;  // number of blocks
+int32_t tsS3BlockSize = -1;         // number of tsdb pages (4096)
+int32_t tsS3BlockCacheSize = 1024;  // number of blocks/pages (16)
 int32_t tsS3UploadDelaySec = 60 * 60;
 
 #ifndef _STORAGE
@@ -697,7 +697,8 @@ static int32_t taosAddServerCfg(SConfig *pCfg) {
   if (cfgAddString(pCfg, "s3Endpoint", tsS3Endpoint, CFG_SCOPE_SERVER) != 0) return -1;
   if (cfgAddString(pCfg, "s3BucketName", tsS3BucketName, CFG_SCOPE_SERVER) != 0) return -1;
   if (cfgAddInt32(pCfg, "s3BlockSize", tsS3BlockSize, -100, 1024 * 1024, CFG_SCOPE_SERVER) != 0) return -1;
-  if (cfgAddInt32(pCfg, "s3BlockCacheSize", tsS3BlockCacheSize, 4, 1024 * 1024, CFG_SCOPE_SERVER) != 0) return -1;
+  if (cfgAddInt32(pCfg, "s3BlockCacheSize", tsS3BlockCacheSize, 4, 1024 * 1024 * 1024, CFG_SCOPE_SERVER) != 0)
+    return -1;
   if (cfgAddInt32(pCfg, "s3UploadDelaySec", tsS3UploadDelaySec, 60 * 10, 60 * 60 * 24 * 30, CFG_SCOPE_SERVER) != 0)
     return -1;
 
diff --git a/source/dnode/mnode/impl/src/mndDnode.c b/source/dnode/mnode/impl/src/mndDnode.c
index 3b3e9eb03b..e2c21ed012 100644
--- a/source/dnode/mnode/impl/src/mndDnode.c
+++ b/source/dnode/mnode/impl/src/mndDnode.c
@@ -1250,7 +1250,7 @@ static int32_t mndProcessConfigDnodeReq(SRpcMsg *pReq) {
     int32_t code = mndMCfgGetValInt32(&cfgReq, optLen, &flag);
     if (code < 0) return code;
 
-    if (flag < 4 || flag > 1024 * 1024) {
+    if (flag < 4 || flag > 1024 * 1024 * 1024) {
       mError("dnode:%d, failed to config s3BlockCacheSize since value:%d. Valid range: [4, 1024 * 1024]",
              cfgReq.dnodeId, flag);
       terrno = TSDB_CODE_INVALID_CFG;