Checking storage information
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Checking storage information
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Available in VPC
In addition to the default storage, you can connect additional storage to the server. The available additional storage depends on the hypervisor type and the server type.
For more information on the additional storage specifications, see the following guides:
- Additional storage specifications for servers with KVM hypervisor type
- Additional storage specifications for servers with XEN hypervisor type
- Details about storage performance of FB1 and CB1
Caution
Data accidentally deleted by your carelessness cannot be restored. To prevent data loss and protect important information, backup the storage data regularly.
Storage page
From the NAVER Cloud Platform portal, click the Console > Compute> Server > Storage menus, in that order, to view the Storage page.
The Storage page is laid out as follows:
| Field | Description |
|---|---|
| ① Menu name | Name of the menu currently being checked and the number of created storages |
| ② Basic features | Features provided upon initial entry to the Storage menu
|
| ③ Post-creation features | Features provided after storage creation
|
| ④ Search window | Searches the created storage by server name, storage name, and connection information conditions |
| ⑤ Filter | Filters the storage to be displayed |
| ⑥ Storage list | List of created storages
|
Click to FB1 and CB1 performance details
The performance indicators for FB1 and CB1 storage is based on the maximum value and it does not guarantee consistent values. The performance and throughput of the FB1 and CB1 storage volumes are determined by the lower value among the following two values:
- Storage volume performance/throughput
- Server instance performance/throughput
Note
For server instance performance and throughput, see KVM-based server characteristics.
FB1 performance
The following describes the throughput, burst throughput and credits, and throughput variations of FB1 storage.
FB1 throughput and burst throughput
The throughput of FB1 storage is provided variably between 4 and 500 MB/s depending on the storage volume size.
- Throughput calculation: storage volume size (GB) x 0.039 MB/s
- Round off at the first decimal point.
- <example> 1 TB x 0.039 MB/s = 39.936 => 40.0 MB/s
The burst throughput of FB1 storage is provided variably between 25 and 500 MB.
- Burst throughput calculation: storage volume size (GB) x 0.244 MB/s
- Round off at the first decimal point.
- <example> 100 GB x 0.244 MB/s = 24.4 => 25 MB/s
The throughput and the burst throughput of FB1 storage are determined by the size of the volume.
For some examples, see the following:
- 100 GB volume: provides a maximum burst performance of 25 MB/s. If using continuously, maintains performance for about 41,943 seconds.
- 1 TB volume: provides a maximum burst performance of 250 MB/s. If using continuously, maintains performance for about 4194 seconds.
FB1 burst throughput credit
The burst credit of FB1 storage is 1 TB. The recovery performance of burst credits is the standard throughput of the volume. For a 100 GB volume, it recovers burst credits at a performance of 4 MB/s, and for a 1 TB volume, it recovers burst credits at a performance of 40 MB/s. If I/O of the volume does not exist, the maximum time required to fully recover burst credits is 262,144 seconds. However, the recovery time may change depending on the remaining credits and performance usage amount of the volume.
FB1 throughput variation
The throughput variations based on volume size are as follows:
| Volume size | Standard throughput (MB/s) | Burst throughput (MB/s) | Remarks |
|---|---|---|---|
| 100 GB | 4 | 25 | - |
| 1 TB | 40 | 250 | - |
| 2 TB | 80 | 500 | Burst throughput reaches its maximum at 2 TB |
| 12 TB | 500 | Not provided | Standard throughput reaches its maximum at 12 TB |
| 16 TB | 500 | Not provided | - |
CB1 performance
The following describes the IOPS and IOPS burst, IOPS burst credits, and performance variations of CB1 storage.
CB1 IOPS and IOPS burst
The IOPS performance of CB1 storage is provided variably between 100 and 16,000 IOPS depending on the storage volume size.
- IOPS calculation: storage volume size (GB) x 3 IOPS
- For a volume size of 33 GB, 100 IOPS are provided
- When the storage volume size is 5333 GB (5340 GB), reaches the maximum IOPS value of 16,000 IOPS
IOPS burst is a feature that enables you to use the volume at a higher value than the standard performance value for a certain amount of time.
The IOPS burst of CB1 storage is provided with a fixed 3000 IOPS.
- Applies to volumes smaller than 100 GB that do not reach the standard IOPS performance value of 3000
- For volumes of 1000 GB and higher, the standard IOPS performance value reaches 3000, so the IOPS burst is not provided
CB1 IOPS burst credit
The following describes the logic to calculate the duration of maintaining IOPS burst of CB1 storage.
You can calculate the burst duration based on the performance usage, bucket size, and standard performance value.
- A: performance usage of the storage volume
- B: bucket size (5,400,000)
- C: standard performance depending on the volume size
- The calculation for burst duration is "B / (A - C)"
- <example> When using the burst to its maximum (3000 IOPS) continuously for 100 GB of volume, the burst duration is 2000 seconds
- <example> When using the burst to its maximum (2000 IOPS) continuously for 400 GB of volume, the burst duration is 6750 seconds
- When the bucket is full, the performance of a volume will return to its standard performance.
- Recovery time for burst credit
- The recovery time depends on the speed of the standard performance (C).
- When a 400 GB volume spends all remaining credits and there is no I/O, the maximum time required to recover all burst credits is 4500 seconds. If the recovery is made while consistently using 500 IOPS, it takes 7715 seconds.
- The recovery time depends on the remaining credits of a volume and the performance usage amount.
CB1 performance variation
The performance variations based on volume size are as follows:
| Volume size | Standard IOPS | Burst IOPS | Standard throughput (MB/s) | Burst throughput (MB/s) | Remarks |
|---|---|---|---|---|---|
| 10 GB | 100 | 3,000 | 100 | - | - |
| 40 GB | 120 | 3,000 | 100 | - | - |
| 150 GB | 450 | 3,000 | 100 | - | - |
| 160 GB | 480 | 3,000 | 110 | - | - |
| 200 GB | 600 | 3,000 | 150 | - | - |
| 300 GB | 900 | 3,000 | 250 | - | Standard throughput reaches its maximum |
| 1,000 GB | 3,000 | - | 250 | - | Standard IOPS reaches its burst |
| 5,340 GB | 16,000 | - | 250 | - | Standard IOPS reaches its maximum |
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