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Service levels and allocated capacity

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The cost for Cloud Volumes Service for AWS is based on the service level and the allocated capacity that you select. Selecting the appropriate service level and capacity helps you meet your storage needs at the lowest cost.

Considerations

Storage needs include two fundamental aspects:

  • The storage capacity for holding data

  • The storage bandwidth for interacting with data

If you consume more storage space than the capacity you selected for the volume, the following considerations apply:

  • You will be billed for the additional storage capacity that you consume at the price defined by your service level.

  • The amount of storage bandwidth available to the volume does not increase until you increase the allocated capacity size or change the service level.

Service levels

Cloud Volumes Service for AWS supports three service levels. You specify your service level when you create or modify the volume.

The service levels are catered to different storage capacity and storage bandwidth needs:

  • Standard (capacity)

    If you want capacity at the lowest cost, and your bandwidth needs are limited, then the Standard service level might be most appropriate for you. An example is using the volume as a backup target.

    • Bandwidth: 16 KB of bandwidth per GB provisioned capacity

  • Premium (a balance of capacity and performance)

    If your application has a balanced need for storage capacity and bandwidth, then the Premium service level might be most appropriate for you. This level is less expensive per MB/s than the Standard service level, and it is also less expensive per GB of storage capacity than the Extreme service level.

    • Bandwidth: 64 KB of bandwidth per GB provisioned capacity

  • Extreme (performance)

    The Extreme service level is least expensive in terms of storage bandwidth. If your application demands storage bandwidth without the associated demand for lots of storage capacity, then the Extreme service level might be most appropriate for you.

    • Bandwidth: 128 KB of bandwidth per GB provisioned capacity

Allocated capacity

You specify your allocated capacity for the volume when you create or modify the volume.

While you would select your service level based on your general, high-level business needs, you should select your allocated capacity size based on the specific needs of applications, for example:

  • How much storage space the applications need

  • How much storage bandwidth per second the applications or the users require

Allocated capacity is specified in GBs. A volume’s allocated capacity can be set within the range of 100 GB to 100,000 GB (equivalent to 100 TBs).

Number of inodes

Volumes less than or equal to 1 TB can use up to 20 million inodes. The number of inodes increase by 20 million for each TB you allocate, up to a maximum of 100 million inodes.

  • <= 1TB = 20 million inodes

  • >1 TB to 2 TB = 40 million inodes

  • >2 TB to 3 TB = 60 million inodes

  • >3 TB to 4 TB = 80 million inodes

  • >4 TB to 100 TB = 100 million inodes

Bandwidth

The combination of both the service level and the allocated capacity you select determines the maximum bandwidth for the volume.

If your applications or users need more bandwidth than your selections, you can change the service level or increase the allocated capacity. The changes do not disrupt data access.

Selecting the service level and the allocated capacity

To select the most appropriate service level and allocated capacity for your needs, you need to know how much capacity and bandwidth you require at the peak or the edge.

List of service levels and allocated capacity

The leftmost column indicates the capacity, and the other columns define the MB/s available at each capacity point based on service level.

See Contract subscription pricing and Metered subscription pricing for complete details on pricing.

Capacity (TB) Standard (MB/s) Premium (MB/s) Extreme (MB/s)

0.1 (100 GB)

1.6

6.4

12.8

1

16

64

128

2

32

128

256

3

48

192

384

4

64

256

512

5

80

320

640

6

96

384

768

7

112

448

896

8

128

512

1,024

9

144

576

1,152

10

160

640

1,280

11

176

704

1,408

12

192

768

1,536

13

208

832

1,664

14

224

896

1,792

15

240

960

1,920

16

256

1,024

2,048

17

272

1,088

2,176

18

288

1,152

2,304

19

304

1,216

2,432

20

320

1,280

2,560

21

336

1,344

2,688

22

352

1,408

2,816

23

368

1,472

2,944

24

384

1,536

3,072

25

400

1,600

3,200

26

416

1,664

3,328

27

432

1,728

3,456

28

448

1,792

3,584

29

464

1,856

3,712

30

480

1,920

3,840

31

496

1,984

3,968

32

512

2,048

4,096

33

528

2,112

4,224

34

544

2,176

4,352

35

560

2,240

4,480

36

576

2,304

4,500

37

592

2,368

4,500

38

608

2,432

4,500

39

624

2,496

4,500

40

640

2,560

4,500

41

656

2,624

4,500

42

672

2,688

4,500

43

688

2,752

4,500

44

704

2,816

4,500

45

720

2,880

4,500

46

736

2,944

4,500

47

752

3,008

4,500

48

768

3,072

4,500

49

784

3,136

4,500

50

800

3,200

4,500

51

816

3,264

4,500

52

832

3,328

4,500

53

848

3,392

4,500

54

864

3,456

4,500

55

880

3,520

4,500

56

896

3,584

4,500

57

912

3,648

4,500

58

928

3,712

4,500

59

944

3,776

4,500

60

960

3,840

4,500

61

976

3,904

4,500

62

992

3,968

4,500

63

1,008

4,032

4,500

64

1,024

4,096

4,500

65

1,040

4,160

4,500

66

1,056

4,224

4,500

67

1,072

4,288

4,500

68

1,088

4,352

4,500

69

1,104

4,416

4,500

70

1,120

4,480

4,500

71

1,136

4,500

4,500

72

1,152

4,500

4,500

73

1,168

4,500

4,500

74

1,184

4,500

4,500

75

1,200

4,500

4,500

76

1,216

4,500

4,500

77

1,232

4,500

4,500

78

1,248

4,500

4,500

79

1,264

4,500

4,500

80

1,280

4,500

4,500

81

1,296

4,500

4,500

82

1,312

4,500

4,500

83

1,328

4,500

4,500

84

1,344

4,500

4,500

85

1,360

4,500

4,500

86

1,376

4,500

4,500

87

1,392

4,500

4,500

88

1,408

4,500

4,500

89

1,424

4,500

4,500

90

1,440

4,500

4,500

91

1,456

4,500

4,500

92

1,472

4,500

4,500

93

1,488

4,500

4,500

94

1,504

4,500

4,500

95

1,520

4,500

4,500

96

1,536

4,500

4,500

97

1,552

4,500

4,500

98

1,568

4,500

4,500

99

1,584

4,500

4,500

100

1,600

4,500

4,500

Example 1

For example, your application requires 25 TB of capacity and 100 MB/s of bandwidth. At 25 TB of capacity, the Standard service level would provide 400 MB/s of bandwidth at a cost of $2,500 (estimate: see current pricing), making Standard the most suitable service level in this case.

Service level and capacity selection

Example 2

For example, your application requires 12 TB of capacity and 800 MB/s of peak bandwidth. Although the Extreme service level can meet the demands of the application at the 12 TB mark, it is more cost-effective (estimate: see current pricing) to select 13 TB at the Premium service level.

Service level and capacity selection