Limiting Values

This section shows the limiting values for the resources available in each service.

Limiting Values Related to Compute

  • Standard Services

    Table 1. List of Limiting Values Related to Virtual Servers
    Item Limiting Values
    Number of Virtual Servers Up to 20 per project per availability zone
    Number of Virtual CPUs (vCPUs) 80 per project per availability zone
    Memory Capacity (total for a project) 327,680 MB per project per availability zone
    Number of Metadata Items that Can Be Specified for a Virtual Server 128 per virtual server
    Number of Key Pairs 100 per project per availability zone
    Number of Server Groups * 10 per project per availability zone
    Number of Virtual Servers that Can Be Registered in a Server Group * 20
    Note:

    The limits of values of the items in List of Limiting Values Related to Virtual Servers (marked with *) only apply to the Eastern Japan Region 2.

    Table 2. List of Limiting Values Related to the Virtual Server Remote Console Function
    Item Limiting Values
    Maximum Duration of a Console Connection 30 minutes
    Number of Simultaneous Console Connections to a Virtual Server 1
    Maximum Number of Simultaneous Console Connections For one contract: 5 Connections per AZ
    Expiration Time of a Console Connection URL 10 minutes
    Table 3. List of Limiting Values Related to Virtual Server Import
    Item Limiting Values
    Maximum Number of Virtual Server Import Requests 100 per domain
    Maximum Execution Period of Virtual Server Import Processing 7 days
    Number of Virtual Server Import Processing Results Retained

    1,000

    Tip: If this limiting value is exceeded, the oldest processing results are deleted.
    File Size of a Single Virtual Server Image (Size in Raw Format)

    300 GB

    Tip: .vmdk files that are divided and uploaded separately are automatically converted into Raw format. This limiting value is the size after Raw conversion.
    Table 4. List of Limiting Values Related to Virtual Server Export
    Item Limiting Values
    Maximum Number of Virtual Server Export Requests for a Single Domain 100
    Maximum Number of Virtual Server Export Requests for a Single Project 50
    Maximum Execution Period of Virtual Server Export Processing 7 days
    Number of Virtual Server Export Processing Results Retained

    1,000

    Tip: If this limiting value is exceeded, the oldest processing results are deleted.
    File Size of a Single Virtual Server Image (Size in Raw Format) 300 GB
    Maximum Simultaneous Execution Number for a Single Domain 5
    Maximum Simultaneous Execution Number for a Single Project 2

  • Services for SAP

    Table 5. List of Limiting Values Related to Virtual Server for SAP and Dedicated Virtual Server for SAP
    Item Limiting Values
    System Storage The size is fixed according to the OS image
    Additional Storage 0.1 - 2,048 GB
    Number of Storage Systems that Can Be Added 1 - 55
    Number of Snapshots Taken 10
    Number of Ports that Can Be Added 1 - 9

Limiting Values Related to Storage

Table 6. List of Limiting Values Related to Block Storage
Item Limiting Values
Storage Size (Standard Type) 1 GB to 10 TB (specified in GB)
Storage Size (High Performance Type) 1 TB to 3 TB (specified in GB)
Number of Storage Systems

50 per project per availability zone

Note: The total number of additional storage systems and additional ports must be no more than 26 for a single virtual server.
Storage Capacity (total for a project) 5 TB per project per availability zone (including capacity for snapshots)
Number of Snapshots Taken 100 per project per availability zone
Note:
  • 1 GB = 1,024^3 bytes
  • 1 TB = 1,000 GB
Table 7. List of Limiting Values Related to Object Storage
Item Limiting Values
Number of Objects per User Unlimited
Number of Objects per Container Unlimited
Length of Object Name 1,024 bytes or less
Size of Object that Can Be Uploaded 0 - 5 GB
Length of Object Metadata Name 128 bytes or less
Length of Object Metadata 2,048 bytes or less
Number of Containers per User Unlimited
Length of Container Name 256 bytes or less
Uniqueness of Container Name Unique name in a project
Length of Container Metadata Name 128 bytes or less
Length of Container Metadata 2,048 bytes or less

Limiting Values Related to Networking

Table 8. List of Limiting Values Related to Networking
Item Limiting Values
Number of Networks 10 per project per availability zone
Number of Subnets 10 per project per availability zone
Number of Host Routes that Can Be Set per Subnet 20
Number of Ports 50 per project per availability zone
Tip: The number of ports that are added due to the addition of storage is not counted.
Note: The total number of additional storage systems and additional ports must be no more than 26 for a single virtual server.
Number of Allowed Address Pairs that Can Be Set for Ports 10 per port
Number of Global IP Addresses 50 per project per availability zone
Number of Security Groups 20 per project
Number of Rules that Can Be Specified for a Security Group

100 per project

Note: This is the number of rules that can be specified for the entire security group. Note that this is not the number allowed for a single security group.
Number of Virtual Routers 10 per project per availability zone
Number of Routes that Can Be Set for a Virtual Router 128 per virtual router
Number of VPN Services 1 per virtual router
Number of IPsec VPN Sites 20
Number of SSL-VPN Connections 20 sessions per connection
Number of Security Groups that Can Be Set for SSL-VPN Connection Resources 6 per connection
Number of Firewalls 10 per project per availability zone
Number of Firewall Policies 1 per firewall
Number of Firewall Rules 500 per firewall policy
Table 9. List of Limiting Values Related to the Load Balancer Service
Item Limiting Values
Load Balancer Name
  • Length: 1 - 30 characters
  • Available character type: Alphanumeric characters and hyphens (-)
Number of Load Balancers Created 20 per project
Maximum Number of Policies to be Created 100 per load balancer
Table 10. List of Limiting Values Related to DNS Zone Management
Item Limiting Values
Number of DNS Zones Registered 100 per domain
Time To Live (TTL) for Cache that Can Be Specified 60 - 86,400 seconds
Maximum Number of Records for Bulk Acquisition of Zone Information 100 records
Table 11. List of Limiting Values Related to DNS Record Management
Item Limiting Values
Number of Records that Can Be Specified 10,000 per zone
Supported Record Type A, AAAA, CNAME, MX, NS, TXT, LBR, PTR, SRV
Record Type with Wildcard Support A, AAAA, MX, CNAME, TXT
Table 12. List of Limiting Values for DNS Record Entries
Record Type Item Limitations Required
A Record Name

Length: 1 - 63 characters

Available character type: Alphanumeric characters, hyphens (-), wildcards (*), and at marks (@)

 Yes
TTL

60 - 86,400 seconds

*When there is no value entered, the TTL value of the zone is given priority

  
Value

Available character type: Alphanumeric characters and dots (.)

Must be a valid IPv4 address

 Yes
Memo

Length: No more than 255 characters

Available character type: Double-byte characters

  
Weight

0 - 100

Available character type: Numeric characters

 *1

Health Check

IP Address

Length: 1 - 32 characters

Alphanumeric characters and dots (.)

 *2

Health Check

Port No.

Length: 1 - 5 characters

Available character type: Numeric characters

 *2

Health Check

Host Name

Length: 0 - 255 characters

Available character type: Single-byte characters

 *3

Health Check

Path

Available character type: Single-byte characters

Only omittable when failover is selected in the policy

 *3
AAAA Record Name

Length: 1 - 63 characters

Alphanumeric characters, hyphens (-), wildcards (*), and at marks (@)

 Yes
TTL

60 - 86,400 seconds

*When there is no value entered, the TTL value of the zone is given priority

  
Value

Alphanumeric characters and colons (:)

Must be a valid IPv6 address

 Yes
Memo

Length: No more than 255 characters

Available character type: Double-byte characters

  
Weight

0 - 100

Available character type: Numeric characters

 *1

Health Check

IP Address

Length: 1 - 32 characters

Available character type: Alphanumeric characters and dots (.)

 *2

Health Check

Port No.

Length: 1 - 5 characters

Available character type: Numeric characters

 *2

Health Check

Host Name

Length: No more than 255 characters

Available character type: Single-byte characters

 *3

Health Check

Path

 Available character type: Single-byte characters *3
CNAME Record Name

Length: 1 - 63 characters

Available character type: Alphanumeric characters, hyphens (-), and wildcards (*)

 Yes
TTL

60 - 86,400 seconds

*When there is no value entered, the TTL value of the zone is given priority

  
Value

Length: 1 - 255 characters

Available character type: Alphanumeric characters, multi-byte domains, dots (.), and hyphens (-)

 Yes
Memo

Length: No more than 255 characters

Available character type: Double-byte characters

  
MX Record Name

Length: 1 - 63 characters

Alphanumeric characters, dots (.), hyphens (-), wildcards (*), and at marks (@)

 Yes
TTL

60 - 86,400 seconds

*When there is no value entered, the TTL value of the zone is given priority

  
Value

Length: 1 - 255 characters

Available character type: Alphanumeric characters, multi-byte domains, dots (.), and hyphens (-)		 Yes
Priority

0 - 64000

Available character type: Numeric characters

 Yes
Memo

Length: No more than 255 characters

Available character type: Double-byte characters

  
TXT Record Name

Length: 1 - 63 characters

Available character type: Alphanumeric characters, underscores (_), hyphens (-), wildcards (*), and at marks (@)

 Yes
TTL

60 - 86,400 seconds

*When there is no value entered, the TTL value of the zone is given priority

  
Value Alphanumeric characters, single-byte spaces, and single-byte symbols other than double quotation marks (") Yes
Memo

Length: No more than 255 characters

Available character type: Double-byte characters

  
NS Record Name

Length: 1 - 63 characters

Available character type: Alphanumeric characters and hyphens (-)

 Yes
TTL

60 - 86,400 seconds

*When there is no value entered, the TTL value of the zone is given priority

  
Value Available character type: Alphanumeric characters, multi-byte domains, dots (.), and hyphens (-) Yes
Memo

Length: No more than 255 characters

Available character type: Double-byte characters

  
LBR Record Name

Length: 1 - 63 characters

Available character type: Alphanumeric characters and hyphens (-)

 Yes
Memo

Length: No more than 255 characters

Available character type: Double-byte characters

  
PTR Record Name Character type: Alphanumeric characters, dots (.), and hyphens (-)  
TTL

60 - 86,400 seconds

*When there is no value entered, the TTL value of the zone is given priority

  
Value Available character type: Alphanumeric characters, multi-byte domains, dots (.), and hyphens (-) Yes
Memo

Length: No more than 255 characters

Available character type: Double-byte characters

  
SRV Record Name

Length: 1 - 63 characters

Available character type: Alphanumeric characters, dots (.), hyphens (-), and underscores (_)

Specify using the "_<Service Name>._<Protocol Name>" format (Example: _ftp._tcp)

 Yes
TTL

60 - 86,400 seconds

*When there is no value entered, the TTL value of the zone is given priority

  
Value Specify the priority, the weight, the port number, and the target in this order, separating the values with blank spaces Yes
Priority

0 - 64000

Available character type: Numeric characters

 Yes
Weight

0 - 65535

Available character type: Numeric characters

 Yes
Port No.

0 - 65535

Available character type: Numeric characters

 Yes
Target

Length: 1 - 255 characters

Available character type: Alphanumeric characters, multi-byte domains, dots (.), and hyphens (-)

Specify using the format "<Record name of A record>.<Domain name>"

Tip:

When the record name of the A record is "ftp-server-01" and the domain name is "example.com":

Set it as "ftp-server-01.example.com"

 Yes
Memo

Length: No more than 255 characters

Available character type: Double-byte characters

  

*1: A required item when weighting has been selected using the policy.

*2: A required item when failover has been selected using the policy.

*3: An optional item when failover has been selected using the policy.

Limiting Values Related to Database as a Service

Table 13. List of Limiting Values Related to Database as a Service
Item Limiting Values
Number of Virtual Database Servers 40 per project
Total Disk Size of All Virtual Database Servers 100 TB
Number of DB Snapshots that Can Be Created 50 generations per virtual database server
Maximum Capacity of DB 10 TB
Number of DB Subnet Groups 20
Number of DB Subnets 20 per subnet group
Number of DB Parameter Groups 50
Number of Event Notification Registrations 20
Number of Read Replicas 5
Specification of the virtual database server name
  • Length: 1 - 255 characters
  • Available character type: Alphanumeric characters and hyphens (-)

  • Other limitations

    • Use an alphabetic character as the first character
    • You cannot use a hyphen as the first character
    • You cannot use two or more consecutive hyphens
Description of Virtual Database Server
  • Length: 1 - 1,024 characters
Master User Name
  • Length: 1 - 63 characters
  • Available character type: Alphabetic characters (lowercase), numeric characters, and underscores (_)

  • Other limitations

    • You can only use an alphabetic character (lowercase) or underscore (_) as the first character
Master User Password
  • Length: 1 - 1,024 characters
DB Snapshot Name
  • Length: 1 - 255 characters
  • Available character type: Alphanumeric characters and hyphens (-)

  • Other limitations

    • The name must begin with an alphabetic character
    • You cannot use a hyphen as the first character
    • You cannot use two or more consecutive hyphens
Read Replica Name
  • Length: 1 - 255 characters
  • Available character type: Alphanumeric characters and hyphens (-)

  • Other limitations

    • The name must begin with an alphabetic character
    • You cannot use a hyphen as the first character
    • You cannot use two or more consecutive hyphens

Limiting Values Related to the Email Delivery Service

Table 14. List of Limiting Values Related to the Email Delivery Service
Item Limiting Values
Maximum Number of Emails Sent per Second
  • Using API: 50 (1 request/second x 50 recipients)
  • Using SMTP interface: 500
Total Value of Registered Source Email Addresses and Registered Source Domains 1,000 per project
Maximum Number of Requests per Second
  • 10 (different requests)
  • 1 (same request)
Number of Recipients per Request 50
Maximum Size per Email
  • Using API: 2 MB

  • Using SMTP interface: 10 MB

    Note: This includes email attachments.

Limiting Values Related to the Content Delivery Service

Table 15. List of Limiting Values Related to Content Delivery
Item Limiting Values
Time until the Content Delivery Service Becomes Available

Within 10 minutes

Tip: This is the time from when application of delivery settings is requested from the API.
Number of Delivery Settings that Can Be Created 200 per project
Number of Secure Communication Settings per Unique Domain

3 domain names per project

Tip: When more than the maximum is necessary, submit the necessary number of domain names using an application form. We will issue the extra license keys.
Caching Behavior Control Rules that Can Be Created 100 behaviors per delivery setting
File Size that Can Be Delivered 1.8 GB (single file)
Number of Files that Can Be Maintained on the Edge Server No upper limit
Maximum Size of Caching Behavior Control Rules

  • Sending: 16 KB

    Tip:

    This value is the total of the following:

    • User-specified length
    • Delivery FQDN length x Number of behaviors of origin settings
  • Receiving: No upper limit
Characters that Can Be Specified for FQDN Information

For assigned domains

  • Characters that can be specified for the prefix: 0 - 30 characters
  • Character type: Alphanumeric characters and hyphens (-)

For unique domains

  • Characters that can be specified for FQDN: 1 - 255 characters
  • Character type: Alphanumeric characters, hyphens (-), and dots (.)
Note:
  • Uppercase alphabetic characters are treated as the corresponding lowercase character.
  • You cannot use a hyphen as the first or last character.
  • You cannot specify "xn--."
Cache TTL that Can Be Specified 0 - 9999 days
Number of API Execution Limits per Second (Rate Limiting)

There are execution limits per second for some APIs.

Tip: If you receive status code 429, wait a while and retry the operation.
Volume of Concurrent Access Possible No upper limits for edge servers.
Characters that Can Be Specified for the Prefix of Access Log Storage Destination

1 - 256 characters

Tip: This includes the account name and the container name.

Limiting Values Related to the Template Service

Table 16. List of Limiting Values Related to Orchestration
Item Limiting Values
Number of Stacks that Can Be Created 1,000 per project
Stack Name
  • Length: 1 - 255 characters
  • Available character type: Alphanumeric characters, underscores (_), hyphens (-), and dots (.)
Number of Resources that Can Be Included in a Stack 1,000 per stack
Number of Events that Can Be Created

1,000 per stack

Note: If this limiting value is exceeded, the oldest events are deleted.
Size of Template File that Can Be Specified when a Stack Is Created 512 KB or less

Limiting Values Related to Management Functions

Table 17. List of Limiting Values Related to Tokens
Item Limiting Values
Number of Global Tokens 5,000 per domain
Expiration of Global Tokens 3 hours
Number of Regional Tokens 5,000 per domain
Expiration of Regional Tokens 3 hours
Table 18. List of Limiting Values Related to Domains, Projects, Groups, and Users
Item Limiting Values
Number of Projects 1,000 per domain
Project Name
  • Length: 4 - 64 characters

  • Available character type: Alphanumeric characters and the following symbols:

    Plus sign (+), equal sign (=), comma (,), dot (.), at mark (@), hyphen (-), underscore (_)

  • Case sensitivity: No
Number of Groups 100 per project
Group Name
  • Length: 4 - 64 characters

  • Available character type: Alphanumeric characters and the following symbols:

    Plus sign (+), equal sign (=), comma (,), dot (.), at mark (@), hyphen (-), underscore (_)

  • Case sensitivity: No
  • Uniqueness constraint: Uniqueness is required within a domain
Number of Users
  • 100 per group
  • 100,000 per domain
User Name
  • Length: 4 - 246 characters

  • Available character type: Alphanumeric characters and the following symbols:

    Dot (.), at mark (@), hyphen (-), underscore (_)
User Password
  • Length: 16 - 64 characters

  • Available character type: Alphanumeric characters, single-byte spaces, and the following symbols:

    !#$%&()*+-.=?@[]_{}~

  • Complexity constraints

    • Must not contain the user name
    • Must include at least 1 alphabetic character
    • Must include at least 1 numeric character
  • Case sensitivity: Yes
Email Address
  • Length: 5 - 64 characters

  • Available character type: Alphanumeric characters and the following symbols:

    !#$%&'*+-./=?@^_`{|}~
Table 19. List of Values Related to Password Policies
Item Limiting Values
Minimum Character Length 16 characters
Minimum Days 1 day
Effective Days 90 days
Lockout
  • Duration: 15 minutes
  • Number of invalid attempts: 5
  • Time from locking to unlocking: 15 minutes
Password History

Last 4 passwords

Tip: When the password after changing would the same as one of the last 4 passwords, it is not possible to use that password.
Table 20. List of Limiting Values Related to Key Management Functions
Item Limiting Values
Key Metadata Container Name
  • Length: 1 - 255 characters
  • Available character type: Alphanumeric characters and single-byte symbols
Number of Key Metadata Containers 100
Key Metadata Records that Can Be Stored in a Key Metadata Container 10 per key metadata container
Number of Key Metadata Records 100
Key Metadata Name
  • Length: 1 - 255 characters
  • Available character type: Alphanumeric characters and single-byte symbols
Size of Key Metadata 10,000 bytes or less