Microsoft VDS is a set of application programming interfaces APIs that provides a single interface for managing disks and other storage hardware, including creating virtual disks on those physical disks. Page 68 Disk Groups and Virtual Disks Follow the directions on the card to obtain a key file and to enable the feature.
The information that follows will better prepare users for using the snapshot virtual disk premium feature of the Dell PowerVault systems.
Page Creating The Snapshot Using The Simple Path 3 Remove the drive letter s of the source in Windows or unmount the virtual drive s in Linux to help guarantee a stable copy of the drive for the Snapshot. If this is not done, the snapshot operation will report that it has completed successfully, but the snapshot data will not be updated properly. If the required free space is not available in the disk group of the source virtual disk, the Create Snapshot Virtual Disks feature defaults to the advanced path.
Dell recommends placing the snapshot repository virtual disk within the disk group of the source virtual disk. This ensures that if drives associated with the disk group are moved to another storage array, all the virtual disks associated with the snapshot virtual disk remain in the same group.
Failure to follow these additional instructions can create unusable snapshot virtual disks. NOTE: If your operating system requires additional instructions, you can find those instructions in your operating system documentation. Page 79 6 Click Next. Page Specifying Snapshot Virtual Disk Names 15 Click Finish to create the snapshot virtual disk and the associated snapshot repository virtual disk. Each controller can add capacity to only one virtual disk at a time.
Page Re-Creating A Snapshot Virtual Disk 4 Remove the drive letter s of the source and if mounted snapshot virtual disk in Windows or unmount the virtual drive s in Linux to help guarantee a stable copy of the drive for the Snapshot. The target virtual disk rejects read and write requests while the virtual disk copy operation has a status of Pending or In Progress or if the operation fails before completing the copy.
Page Virtual Disk Copy Restrictions Virtual Disk Copy Restrictions Before you perform any virtual disk copy tasks, understand and adhere to the restrictions listed in this section.
The restrictions apply to the source virtual disk, the target virtual disk, and the storage array. This operation overwrites any existing data on the target virtual disk. Page Copying The Virtual Disk 4 Remove the drive letter s of the source and if mounted virtual disk in Windows or unmount the virtual drive s in Linux to help guarantee a stable copy of the drive for the virtual disk.
If this is not done, the copy operation will report that it has completed successfully, but the copied data will not be updated properly. The source virtual disk, the target virtual disk, and the copy priority setting that you selected appear on the Create virtual disk copies—Confirm Copy Settings dialog. Page Recopying The Virtual Disk Recopying the Virtual Disk After first preparing the host server s as specified in the preceding procedure, complete the following steps to create a new virtual disk copy for an existing copy pair: 1 Click the Modify tab, and then click Manage virtual disk copies.
You can only select one copy operation at a time to be recopied. Page Removing Copy Pairs 3 You must register the target virtual disk with the operating system before you can use the new virtual disk. Perform the following steps: Enable write permission on the target virtual disk by either removing the virtual disk copy pair see "Removing Copy Pairs" on page 95 or explicitly setting write permission. Page 96 Virtual Disk Copy Follow the directions on the card to obtain a key file and enable the feature.
Page 98 Snapshot Virtual Disks To complete the download, click Yes. NOTE: Due to a limitation with Linux, physical disk firmware updates must be performed using out-of-band management only.
NOTE: Due to the nature of the enhancements made by the Firmware Downloads Page 2 If you are running Page Firmware Downloads Page Troubleshooting Problems Troubleshooting Problems The following sections provide information to assist you in resolving problems that may occur with your MD Storage Array. Recovery Guru The Recovery Guru is a component of MD Storage Manager that diagnoses critical events on the storage array and recommends step-by-step recovery procedures for problem resolution.
Page Smrepassist Utility You can also use this utility to resolve duplicate signature problems for snapshot virtual disks. Causes for this error include network connection problems, the storage array is turned off, or the storage array does not exist.
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