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SmartTier Feature Guide for Block

OceanStor V5 Series V500R007

This document is applicable to OceanStor 5110 V5, 5300 V5, 5500 V5, 5600 V5, 5800 V5, 6800 V5, 18500 V5, and 18800 V5. This document describes the working principle and application scenarios of the SmartTier (for block) feature. It also explains how to configure and manage the feature.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Storage System-Level Management

Storage System-Level Management

The tasks of the storage system-level management are setting data relocation rates and managing the relocation status.

Table 3-1 details these management tasks.

Table 3-1 Storage system-level management tasks

Task

Description

Setting a Data Migration Speed

The Data migration speed defines the speed rate at which data is relocated among storage tiers. Set Data migration speed when you want to use the SmartTier to manage storage.

Managing Relocation Status

View or change among the three states of the SmartTier: Ready, Relocating, and Paused.

The following introduces how to complete these management tasks.

Setting a Data Migration Speed

Set Data migration speed when you want to use the SmartTier to manage storage.

  1. On the DeviceManager, choose Provisioning > Resource Performance Optimization > SmartTier. The SmartTier management page is displayed.
  2. You can change the rate in the Data migration speed list.

Managing Relocation Status

There are three SmartTier relocation states: Ready, Relocating, and Paused, and four management actions: Start, Stop, Pause, and Continue.

  • Ready indicates that the storage pool has multiple storage tiers, and data relocation can be started manually or automatically.
  • Relocating indicates that data is being relocated in the storage pool.
  • Paused indicates that the data relocation task has been paused.

Figure 3-1 shows the relationship of the three SmartTier relocation states.

Figure 3-1 Relationship of SmartTier relocation states

You can select the check box on the left of Storage Pool Name to select all the storage pools (StoragePool000 and StoragePool001 in this example) in the storage system. Then right-click any of the storage pools and choose a management action. This management action will apply to all the storage pools.

If you want to change the SmartTier relocation status from Ready to Relocating, set a data relocation duration. This duration specifies how long this relocation task is allowed to take. Its maximum value is 24 hours. When the duration ends, the data relocation task will be stopped no matter whether all data has been relocated, and the SmartTier relocation state is changed to Ready.

The relocation triggering mode of StoragePool000 is Manual. Therefore, you need to manually change the SmartTier relocation status to Relocating to start data relocation.

The relocation triggering mode of StoragePool001 is Periodical, and the data relocation duration lasts from 02:00 a.m. to 05:00 a.m.

  • If you want to start data relocation at 03:00 a.m. (time included in the data relocation duration).

    This relocation attempt will fail, because data is being relocated in StoragePool001 and a storage pool does not allow two simultaneous data relocation instances.

  • If you want to start data relocation at 01:00 a.m. (time excluded in the data relocation duration).

    Manually start the data relocation at that time. Then data starts to be relocated within StoragePool001. Note that if the data relocation duration overlaps and conflicts with the time set for automatic data relocation, the data relocation duration dominates the data relocation process.

    For example, if the data relocation duration is set to last from 01:00 a.m. to 04:00 a.m., data relocation for StoragePool001 will stop at 04:00 a.m., and the relocation status will be changed to Ready at that time.

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Updated: 2019-07-11

Document ID: EDOC1000181474

Views: 14427

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