Cloud Parallel File Storage:Scale out a file system

Prerequisites

You have created a file system. For more information, see Create a file system.

Usage notes

• You can only scale out a CPFS for Lingjun file system when it is in the running state.

• The scaling step size is 10,240 GiB, and you can scale out the capacity up to 1 PiB. The maximum creatable capacity is 20 PiB. To create a file system of this size, submit a ticket.

• High file system utilization can cause performance degradation from file fragmentation. We recommend scaling out the capacity before utilization reaches 90%.

• For optimal performance, we recommend rebalancing data after you scale out your file system. This process consumes some disk and network bandwidth and may cause a slight, temporary performance decrease. To request this operation, submit a ticket.

  • The time required for data rebalancing depends on the volume of existing data; larger volumes take longer to process.

  • In cases of extreme data imbalance, the total capacity and usage reported by the df command and in the console might appear to decrease. This does not affect data security or access performance.

  • If you do not perform data rebalancing, latency may increase as you write more data to the file system.

Scale out a CPFS for Lingjun

1. Log on to the NAS console.

2. In the left-side navigation pane, choose File System > File System List.

3. In the top navigation bar, select a region.

4. Find the target CPFS for Lingjun file system. In the Actions column, click the icon and choose Upgrade.

   Note

   The scaling step size is 10,240 GiB, and you can scale out the capacity up to 1 PiB. The maximum creatable capacity is 20 PiB. To create a file system of this size, submit a ticket.

5. On the CPFS (Pay-As-You-Go) | Upgrade/Downgrade panel, in the Capacity of CPFS File System section, adjust the capacity.

   Note

   For stable performance after scaling out, increase the capacity by at least 10%.

6. Click Buy Now and complete the purchase as prompted.

Related topics

• To view the capacity usage of your file system, see View CPFS capacity monitoring.

• To receive timely alerts about your file system's capacity and performance, configure alert rules. For more information, see Configure basic alert rules and Configure advanced alert rules.