Method used to set the LUN stripe depth

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1. The stripe depth can only be set during LUN creation and cannot be modified after being created.
2. Go to the Create LUN dialog box.
In the navigation tree, click the storage system node and choose Storage Resources > LUNs.
In the right function pane, choose Create > LUN.
The Create LUN dialog box is displayed.
Set the parameters in the Create LUN dialog box.

Other related questions:
Method used to plan the stripe depth for LUNs
Method used to plan the stripe depth for LUNs: Sizes of I/Os delivered by the hose vary with service applications. To improve I/O performance of the storage system, you can choose a proper stripe depth to match the size of I/Os delivered by the host.

Feature of stripe depth of LUNs
The stripe depth refers to the size of blocks in a stripe of a disk array that uses striped data mapping. It also refers to the size of consecutively addressed virtual blocks mapped to a consecutively addressed disk blocks on a single member extent of a disk array. Therefore, choose the most appropriate stripe depth based on the size of data I/Os. If the storage system is used to store a large number of sequential data, such as media data, a large stripe depth is recommended. The recommended stripe depth is more than 64 KB. If the storage system is used for storing a large number of random data, such as the transaction processing data, a smaller stripe depth is recommended. The recommended stripe depth is 32 KB.

Method used to format a LUN on the storage
1. The LUN must be formatted after the LUN is created on the storage device. 2. After the LUN is created on the storage device, it is automatically formatted on the storage device without manual intervention. 3. The used LUNs cannot be formatted manually.

Method used to change owning controllers of LUNs
1. For a RAID group consisting of SATA disks, it is recommended that LUNs in the same RAID group be configured with the same owning controller. For a RAID group consisting of other types of disks, it is recommended that LUNs in the same RAID group be allocated to different owning controllers. 2. Go to the Modify LUN dialog box. In the ISM navigation tree, choose All Devices > SN_XX > Storage Resources > LUN. (SN_XX is the name of the target storage system.) In the right function pane, select the LUN you want to modify. Click Modify. The Modify LUN dialog box is displayed. Modify the basic and advanced attributes of the LUN.

Method used to modify the LUN prefetch policy
Go to the Modify LUN dialog box. In the ISM navigation tree, choose All Devices > SN_XX > Storage Resources > LUN (SN_XX is the name of the target storage system). In the right function pane, select the LUN you want to modify. Click Modify. The Modify LUN dialog box is displayed. Modify the basic and advanced attributes of the LUN.

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