diff --git a/pkg/compute/hostdrivers/aliyun.go b/pkg/compute/hostdrivers/aliyun.go
index 2c9df47e38..47bdbe971e 100644
--- a/pkg/compute/hostdrivers/aliyun.go
+++ b/pkg/compute/hostdrivers/aliyun.go
@@ -13,6 +13,7 @@ import (
 	"yunion.io/x/onecloud/pkg/compute/models"
 	"yunion.io/x/onecloud/pkg/compute/options"
 	"yunion.io/x/onecloud/pkg/httperrors"
+	"yunion.io/x/pkg/utils"
 )
 
 type SAliyunHostDriver struct {
@@ -28,6 +29,21 @@ func (self *SAliyunHostDriver) GetHostType() string {
 	return models.HOST_TYPE_ALIYUN
 }
 
+func (self *SAliyunHostDriver) ValidateCreateDisk(storage *models.SStorage, sizeGb int) error {
+	if utils.IsInStringArray(storage.StorageType, []string{models.STORAGE_CLOUD_EFFICIENCY, models.STORAGE_CLOUD_SSD, models.STORAGE_CLOUD_ESSD}) {
+		if sizeGb < 20 || sizeGb > 32768 {
+			return fmt.Errorf("The %s disk size must be in the range of 20G ~ 32768G", storage.StorageType)
+		}
+	} else if storage.StorageType == models.STORAGE_PUBLIC_CLOUD {
+		if sizeGb < 5 || sizeGb > 2000 {
+			return fmt.Errorf("The %s disk size must be in the range of 5G ~ 2000G", storage.StorageType)
+		}
+	} else {
+		return fmt.Errorf("Not support create %s disk", storage.StorageType)
+	}
+	return nil
+}
+
 func (self *SAliyunHostDriver) CheckAndSetCacheImage(ctx context.Context, host *models.SHost, storageCache *models.SStoragecache, task taskman.ITask) error {
 	params := task.GetParams()
 	imageId, err := params.GetString("image_id")
diff --git a/pkg/compute/hostdrivers/aws.go b/pkg/compute/hostdrivers/aws.go
index b4022ab211..c1dd56a6c9 100644
--- a/pkg/compute/hostdrivers/aws.go
+++ b/pkg/compute/hostdrivers/aws.go
@@ -3,11 +3,13 @@ package hostdrivers
 import (
 	"context"
 	"fmt"
+
 	"yunion.io/x/log"
 	"yunion.io/x/onecloud/pkg/cloudcommon/db/lockman"
 	"yunion.io/x/onecloud/pkg/cloudprovider"
 	"yunion.io/x/onecloud/pkg/compute/options"
 	"yunion.io/x/onecloud/pkg/httperrors"
+	"yunion.io/x/pkg/utils"
 
 	"yunion.io/x/jsonutils"
 	"yunion.io/x/onecloud/pkg/cloudcommon/db/taskman"
@@ -22,6 +24,29 @@ func (self *SAwsHostDriver) GetHostType() string {
 	return models.HOST_TYPE_AWS
 }
 
+func (self *SAwsHostDriver) ValidateCreateDisk(storage *models.SStorage, sizeGb int) error {
+	if storage.StorageType == models.STORAGE_GP2_SSD {
+		if sizeGb < 1 || sizeGb > 16384 {
+			return fmt.Errorf("The %s disk size must be in the range of 1G ~ 16384GB", storage.StorageType)
+		}
+	} else if storage.StorageType == models.STORAGE_IO1_SSD {
+		if sizeGb < 4 || sizeGb > 16384 {
+			return fmt.Errorf("The %s disk size must be in the range of 4G ~ 16384GB", storage.StorageType)
+		}
+	} else if utils.IsInStringArray(storage.StorageType, []string{models.STORAGE_ST1_HDD, models.STORAGE_SC1_SSD}) {
+		if sizeGb < 500 || sizeGb > 16384 {
+			return fmt.Errorf("The %s disk size must be in the range of 500G ~ 16384GB", storage.StorageType)
+		}
+	} else if storage.StorageType == models.STORAGE_STANDARD_SSD {
+		if sizeGb < 1 || sizeGb > 1024 {
+			return fmt.Errorf("The %s disk size must be in the range of 1G ~ 1024GB", storage.StorageType)
+		}
+	} else {
+		return fmt.Errorf("Not support create %s disk", storage.StorageType)
+	}
+	return nil
+}
+
 func (self *SAwsHostDriver) CheckAndSetCacheImage(ctx context.Context, host *models.SHost, storageCache *models.SStoragecache, task taskman.ITask) error {
 	params := task.GetParams()
 	imageId, err := params.GetString("image_id")
diff --git a/pkg/compute/hostdrivers/azure.go b/pkg/compute/hostdrivers/azure.go
index 6635e9c879..edcf0d15e7 100644
--- a/pkg/compute/hostdrivers/azure.go
+++ b/pkg/compute/hostdrivers/azure.go
@@ -36,6 +36,10 @@ func (self *SAzureHostDriver) ValidateUpdateDisk(ctx context.Context, userCred m
 	return data, nil
 }
 
+func (self *SAzureHostDriver) ValidateCreateDisk(storage *models.SStorage, sizeGb int) error {
+	return nil
+}
+
 func (self *SAzureHostDriver) CheckAndSetCacheImage(ctx context.Context, host *models.SHost, storageCache *models.SStoragecache, task taskman.ITask) error {
 	params := task.GetParams()
 	imageId, err := params.GetString("image_id")
diff --git a/pkg/compute/hostdrivers/base.go b/pkg/compute/hostdrivers/base.go
index fc254c05e4..a245b2befa 100644
--- a/pkg/compute/hostdrivers/base.go
+++ b/pkg/compute/hostdrivers/base.go
@@ -20,6 +20,10 @@ func (self *SBaseHostDriver) ValidateUpdateDisk(ctx context.Context, userCred mc
 	return data, nil
 }
 
+func (self *SBaseHostDriver) ValidateCreateDisk(storage *models.SStorage, sizeGb int) error {
+	return fmt.Errorf("ot Implement ValidateCreateDisk")
+}
+
 func (self *SBaseHostDriver) RequestDeleteSnapshotsWithStorage(ctx context.Context, host *models.SHost, snapshot *models.SSnapshot, task taskman.ITask) error {
 	return fmt.Errorf("Not Implement")
 }
diff --git a/pkg/compute/hostdrivers/qcloud.go b/pkg/compute/hostdrivers/qcloud.go
index 536c620c64..19c59970e1 100644
--- a/pkg/compute/hostdrivers/qcloud.go
+++ b/pkg/compute/hostdrivers/qcloud.go
@@ -28,6 +28,28 @@ func (self *SQcloudHostDriver) GetHostType() string {
 	return models.HOST_TYPE_QCLOUD
 }
 
+func (self *SQcloudHostDriver) ValidateCreateDisk(storage *models.SStorage, sizeGb int) error {
+	if sizeGb%10 != 0 {
+		return fmt.Errorf("The disk size must be a multiple of 10Gb")
+	}
+	if storage.StorageType == models.STORAGE_CLOUD_BASIC {
+		if sizeGb < 10 || sizeGb > 16000 {
+			return fmt.Errorf("The %s disk size must be in the range of 10 ~ 16000GB", storage.StorageType)
+		}
+	} else if storage.StorageType == models.STORAGE_CLOUD_PREMIUM {
+		if sizeGb < 50 || sizeGb > 16000 {
+			return fmt.Errorf("The %s disk size must be in the range of 50 ~ 16000GB", storage.StorageType)
+		}
+	} else if storage.StorageType == models.STORAGE_CLOUD_SSD {
+		if sizeGb < 100 || sizeGb > 16000 {
+			return fmt.Errorf("The %s disk size must be in the range of 100 ~ 16000GB", storage.StorageType)
+		}
+	} else {
+		return fmt.Errorf("Not support create %s disk", storage.StorageType)
+	}
+	return nil
+}
+
 func (self *SQcloudHostDriver) CheckAndSetCacheImage(ctx context.Context, host *models.SHost, storageCache *models.SStoragecache, task taskman.ITask) error {
 	params := task.GetParams()
 	imageId, err := params.GetString("image_id")
diff --git a/pkg/compute/models/disks.go b/pkg/compute/models/disks.go
index e09560fc9e..b75255497a 100644
--- a/pkg/compute/models/disks.go
+++ b/pkg/compute/models/disks.go
@@ -293,7 +293,7 @@ func (manager *SDiskManager) ValidateCreateData(ctx context.Context, userCred mc
 	if _, err := manager.SSharableVirtualResourceBaseManager.ValidateCreateData(ctx, userCred, ownerProjId, query, data); err != nil {
 		return nil, err
 	}
-	pendingUsage := SQuota{Storage: diskConfig.Size}
+	pendingUsage := SQuota{Storage: diskConfig.SizeMb}
 	if err := QuotaManager.CheckSetPendingQuota(ctx, userCred, userCred.GetProjectId(), &pendingUsage); err != nil {
 		return nil, err
 	}
@@ -310,14 +310,11 @@ func (manager *SDiskManager) validateDiskOnStorage(diskConfig *SDiskConfig, stor
 	if storage.StorageType != diskConfig.Backend {
 		return httperrors.NewInputParameterError("Storage type[%s] not match backend %s", storage.StorageType, diskConfig.Backend)
 	}
-	size := diskConfig.Size >> 10
-	if storage.StorageType == STORAGE_CLOUD_EFFICIENCY || storage.StorageType == STORAGE_CLOUD_SSD {
-		if size < 20 || size > 32768 {
-			return httperrors.NewInputParameterError("cloud_ssd or cloud_efficiency disk only support 20G ~ 32768G")
-		}
-	} else if storage.StorageType == STORAGE_PUBLIC_CLOUD {
-		if size < 5 || size > 2000 {
-			return httperrors.NewInputParameterError("cloud disk only support 5G ~ 2000G")
+	sizeGb := diskConfig.SizeMb >> 10
+	if host := storage.GetMasterHost(); host != nil {
+		//公有云磁盘大小检查。
+		if err := host.GetHostDriver().ValidateCreateDisk(storage, sizeGb); err != nil {
+			return httperrors.NewInputParameterError(err.Error())
 		}
 	}
 	hoststorages := HoststorageManager.Query().SubQuery()
@@ -328,7 +325,7 @@ func (manager *SDiskManager) validateDiskOnStorage(diskConfig *SDiskConfig, stor
 	if len(hoststorage) == 0 {
 		return httperrors.NewInputParameterError("Storage[%s] must attach to a host", storage.Name)
 	}
-	if diskConfig.Size > storage.GetFreeCapacity() && !storage.IsEmulated {
+	if diskConfig.SizeMb > storage.GetFreeCapacity() && !storage.IsEmulated {
 		return httperrors.NewInputParameterError("Not enough free space")
 	}
 	return nil
@@ -968,7 +965,7 @@ func totalDiskSize(projectId string, active tristate.TriState, ready tristate.Tr
 type SDiskConfig struct {
 	ImageId string
 	// ImageDiskFormat string
-	Size            int    // MB
+	SizeMb          int    // MB
 	Fs              string // file system
 	Format          string //
 	Driver          string //
@@ -1006,7 +1003,7 @@ func parseDiskInfo(ctx context.Context, userCred mcclient.TokenCredential, info
 			continue
 		}
 		if regutils.MatchSize(p) {
-			diskConfig.Size, _ = fileutils.GetSizeMb(p, 'M', 1024)
+			diskConfig.SizeMb, _ = fileutils.GetSizeMb(p, 'M', 1024)
 		} else if utils.IsInStringArray(p, osprofile.FS_TYPES) {
 			diskConfig.Fs = p
 		} else if utils.IsInStringArray(p, osprofile.IMAGE_FORMAT_TYPES) {
@@ -1020,7 +1017,7 @@ func parseDiskInfo(ctx context.Context, userCred mcclient.TokenCredential, info
 		} else if p[0] == '/' {
 			diskConfig.Mountpoint = p
 		} else if p == "autoextend" {
-			diskConfig.Size = -1
+			diskConfig.SizeMb = -1
 		} else if utils.IsInStringArray(p, STORAGE_TYPES) {
 			diskConfig.Backend = p
 		} else if len(p) > 0 {
@@ -1042,15 +1039,15 @@ func parseDiskInfo(ctx context.Context, userCred mcclient.TokenCredential, info
 				}
 				// diskConfig.ImageDiskFormat = image.DiskFormat
 				CachedimageManager.ImageAddRefCount(image.Id)
-				if diskConfig.Size == 0 {
-					diskConfig.Size = image.MinDisk // MB
+				if diskConfig.SizeMb == 0 {
+					diskConfig.SizeMb = image.MinDisk // MB
 				}
 			}
 		}
 	}
-	if len(diskConfig.ImageId) > 0 && diskConfig.Size == 0 {
-		diskConfig.Size = options.Options.DefaultDiskSize // MB
-	} else if len(diskConfig.ImageId) == 0 && diskConfig.Size == 0 {
+	if len(diskConfig.ImageId) > 0 && diskConfig.SizeMb == 0 {
+		diskConfig.SizeMb = options.Options.DefaultDiskSize // MB
+	} else if len(diskConfig.ImageId) == 0 && diskConfig.SizeMb == 0 {
 		return nil, httperrors.NewInputParameterError("Diskinfo not contains either imageID or size")
 	}
 	return &diskConfig, nil
@@ -1086,7 +1083,7 @@ func (self *SDisk) fetchDiskInfo(diskConfig *SDiskConfig) {
 		self.Nonpersistent = false
 	}
 	self.DiskFormat = diskConfig.Format
-	self.DiskSize = diskConfig.Size
+	self.DiskSize = diskConfig.SizeMb
 }
 
 type DiskInfo struct {
diff --git a/pkg/compute/models/guest_actions.go b/pkg/compute/models/guest_actions.go
index 0ab0ea09d7..0ebbad08e5 100644
--- a/pkg/compute/models/guest_actions.go
+++ b/pkg/compute/models/guest_actions.go
@@ -834,11 +834,11 @@ func (self *SGuest) PerformCreatedisk(ctx context.Context, userCred mcclient.Tok
 		}
 		disksConf.Set(diskSeq, jsonutils.Marshal(diskInfo))
 		if _, ok := diskSizes[diskInfo.Backend]; !ok {
-			diskSizes[diskInfo.Backend] = diskInfo.Size
+			diskSizes[diskInfo.Backend] = diskInfo.SizeMb
 		} else {
-			diskSizes[diskInfo.Backend] += diskInfo.Size
+			diskSizes[diskInfo.Backend] += diskInfo.SizeMb
 		}
-		diskSize += diskInfo.Size
+		diskSize += diskInfo.SizeMb
 		diskIdx += 1
 		diskSeq = fmt.Sprintf("disk.%d", diskIdx)
 	}
@@ -1193,11 +1193,11 @@ func (self *SGuest) PerformChangeConfig(ctx context.Context, userCred mcclient.T
 		if len(diskConf.Backend) == 0 {
 			diskConf.Backend = self.getDefaultStorageType()
 		}
-		if diskConf.Size > 0 {
+		if diskConf.SizeMb > 0 {
 			if diskIdx >= len(disks) {
 				newDisks.Add(jsonutils.Marshal(diskConf), fmt.Sprintf("disk.%d", newDiskIdx))
 				newDiskIdx += 1
-				addDisk += diskConf.Size
+				addDisk += diskConf.SizeMb
 				storage := host.GetLeastUsedStorage(diskConf.Backend)
 				if storage == nil {
 					return nil, httperrors.NewResourceNotReadyError("host not connect storage %s", diskConf.Backend)
@@ -1206,22 +1206,22 @@ func (self *SGuest) PerformChangeConfig(ctx context.Context, userCred mcclient.T
 				if !ok {
 					diskSizes[storage.Id] = 0
 				}
-				diskSizes[storage.Id] = diskSizes[storage.Id] + diskConf.Size
+				diskSizes[storage.Id] = diskSizes[storage.Id] + diskConf.SizeMb
 			} else {
 				disk := disks[diskIdx].GetDisk()
 				oldSize := disk.DiskSize
-				if diskConf.Size < oldSize {
+				if diskConf.SizeMb < oldSize {
 					return nil, httperrors.NewInputParameterError("Cannot reduce disk size")
-				} else if diskConf.Size > oldSize {
-					arr := jsonutils.NewArray(jsonutils.NewString(disks[diskIdx].DiskId), jsonutils.NewInt(int64(diskConf.Size)))
+				} else if diskConf.SizeMb > oldSize {
+					arr := jsonutils.NewArray(jsonutils.NewString(disks[diskIdx].DiskId), jsonutils.NewInt(int64(diskConf.SizeMb)))
 					resizeDisks.Add(arr)
-					addDisk += diskConf.Size - oldSize
+					addDisk += diskConf.SizeMb - oldSize
 					storage := disks[diskIdx].GetDisk().GetStorage()
 					_, ok := diskSizes[storage.Id]
 					if !ok {
 						diskSizes[storage.Id] = 0
 					}
-					diskSizes[storage.Id] = diskSizes[storage.Id] + diskConf.Size - oldSize
+					diskSizes[storage.Id] = diskSizes[storage.Id] + diskConf.SizeMb - oldSize
 				}
 			}
 		}
diff --git a/pkg/compute/models/guests.go b/pkg/compute/models/guests.go
index 4d513dea9a..e9d93e888d 100644
--- a/pkg/compute/models/guests.go
+++ b/pkg/compute/models/guests.go
@@ -820,7 +820,7 @@ func getGuestResourceRequirements(ctx context.Context, userCred mcclient.TokenCr
 	for idx := 0; data.Contains(fmt.Sprintf("disk.%d", idx)); idx += 1 {
 		dataJson, _ := data.Get(fmt.Sprintf("disk.%d", idx))
 		diskConfig, _ := parseDiskInfo(ctx, userCred, dataJson)
-		diskSize += diskConfig.Size
+		diskSize += diskConfig.SizeMb
 	}
 
 	devCount := 0
diff --git a/pkg/compute/models/hostdrivers.go b/pkg/compute/models/hostdrivers.go
index d6217e3c69..fc2cfe89de 100644
--- a/pkg/compute/models/hostdrivers.go
+++ b/pkg/compute/models/hostdrivers.go
@@ -14,6 +14,7 @@ type IHostDriver interface {
 	GetHostType() string
 	CheckAndSetCacheImage(ctx context.Context, host *SHost, storagecache *SStoragecache, task taskman.ITask) error
 	ValidateUpdateDisk(ctx context.Context, userCred mcclient.TokenCredential, data *jsonutils.JSONDict) (*jsonutils.JSONDict, error)
+	ValidateCreateDisk(storage *SStorage, sizeGb int) error
 	RequestPrepareSaveDiskOnHost(ctx context.Context, host *SHost, disk *SDisk, imageId string, task taskman.ITask) error
 	RequestSaveUploadImageOnHost(ctx context.Context, host *SHost, disk *SDisk, imageId string, task taskman.ITask, data jsonutils.JSONObject) error
 	RequestAllocateDiskOnStorage(ctx context.Context, host *SHost, storage *SStorage, disk *SDisk, task taskman.ITask, content *jsonutils.JSONDict) error