The purpose of this article is to provide the step-by-step process for replacing defective drive, rebuild RAID, create new iSCSI target, VHD and LUNs for DIP 7000 R2.
Accessing MegaRAID Storage Manager After logging into the DIP7000, there is a shortcut on the desktop for the “MegaRAID Storage Manager” application.
Double click the icon to access the application.
This menu will list the IP address of the appliance. Select the IP address.
This will open a login menu. To access the controller, you must use the administrative credentials for the operating system.
When working with a DIP that is configured for RAID 5, the array itself can sustain a one drive failure and successfully recover with all data intact.
While drives are hot swappable, the proper steps to replace a drive are:
1. From the "Logical" tab menu, the failed drive can be identified by the red dot next to the drive icon.
2. Once the drive has been identified, right click the icon and select "Mark Drive as Missing“
This marks an offline/failed drive of a degraded array as missing in order to prepare the drive for replacement
You should receive a set of warnings. Select "Confirm and yes to both.
Note: If during this process you receive "Alerts", select "Dismiss".
To locate the correct drive for replacement, right click the drive's icon and select "Start Locating Drive".
This will cause the drive's LED to flash
The hard drives are mounted in hard drive carriers to simplify their installation and removal from the chassis.
The unit features hot-swappable hard drives which can be removed without powering down the system
3. Remove the screws securing the dummy drive to the hard drive carrier.
4. Remove the defective drive from the hard drive carrier and place the hard drive carrier on a flat surface.
5. Slide a new hard drive into the hard drive carrier with the printed circuit board side facing down.
6. Align the mounting holes in both, the hard drive carrier and the hard drive.
7. Secure the hard drive to the hard drive carrier using six screws
To install a hard drive into the bay:
8. Push against the upper part of the hard drive handle.
9. Push the hard drive horizontally into the hard drive bay, orienting the hard drive so that the release button is on the right.
10. Push the hard drive carrier into the bay until the handle retracts and the hard drive clicks into the locked position.
After removing the failed drive and physically installing the replacement, the newly inserted drive should automatically go into "Rebuild"
The rebuild process may take several hours to finish.
Rebuild times will vary based on several factors
• Number of drives in the array
• Amount of data to be rebuilt
• iSCSI traffic to and from the DIP
When working with a DIP that is configured for RAID 5 and that has suffered a two drive failure, all data that was contained on the virtual drive will be lost.
The initial recovery steps for a two drive failure are similar to that of a one drive failure, but additional steps are required in order to make the DIP functional again.
The controller's Virtual Drive is also in a failed state.
This means the DIP's D:\is no longer present, and all iSCSI VHD’s are gone.
Mark all failed drives as missing as shown previously. This should move them from the Virtual Drive's "Drive Group" to "Unconfigured Devices"
• Use the "Start Locating" sub menu
• Physically remove the failed drives
• Install replacement drives
• Restart the DIP
NOTE: Prior to the next step, power off and power the appliance back on. The LSI controller card does not contain a battery backup, and for this reason, keeps the last known good configuration in it's running memory. In some cases this can cause "false" restore states accentuated by windows file pointers. Recycling power ensures accurate readings.
After the power has recycled, you will see the replacement drives "Unconfigured Good"
To add the new drives to the existing VD, right click each drive and select the "Replace Missing Drive" option
Once selected, you will be asked for drive group assignment. The DIP should only have one drive group; select "OK"
While the controller card Virtual Drive is now repaired, it is currently recognized by Windows as an "un-initialized" drive. To add the RAID array back to the system as the D:\
• Open the Windows "Server Manager"
• Select "File and Storage Services"
• Select "Disks"
You should see in the "Disks" menu that the RAID Array is present but the partition is "Unknown“
Right click the drive and select "Initialize". You will be prompted to confirm it as a GPT disk, select "Yes"
The state of the drive should change to "GPT". Right click the drive and select "New Volume..." in order to format and assign the volume a drive letter
After selecting "New Volume..." you will be presented with the "New Volume Wizard". On the introduction page, select "Next"
On the "Server and Disk" menu, highlight the newly initialized disk and the select "Next"
On the "Size" menu, insure that the total available space is selected. Select "Next"
On the "Drive Letter and Folder" menu, assign the appropriate drive letter. Select "Next"
On the "File Systems Settings" leave the default settings of "NTFS" and "Default". Select "Next".
The "Confirmation" menu is a summary of the option you selected. Select "Create"
The "Results" menu will show the "Volume" creation in progress.
When the process is finished, close the wizard menu A "D:\" drive should ne be present in "My Computer"
Now that the "Drive" is recognized, the iSCSI VHD’s need to be recreated and assigned to the iSCSI Software Target.
From within the "Server Manager" menu, select the "iSCSI" menu
In the iSCSI Virtual Disks menu it will show that "There are no iSCSI virtual disks".
• Select the "To create....." hyperlink
This will open the "New iSCSI Virtual Disk Wizard".
Either a "Volume" can be specified or a path can be typed. If typing a specific path: D:\LUNID.VHD
LUN ID will be incremental based on the LUN created: LUN0 , LUN1 etc.
The "iSCSI Virtual Disk Name" menu will ask for a VHD name.
Enter the Lun name, example "LUN1". Select "Next"
Size matters! The "iSCSI Virtual Disk Size" menu will require the size to be entered:
The "iSCSI Target" menu allows you to select the "iSCSI Target" that the VHD will be assigned to.
Select "TGO" and then select "Next".
The "Confirmation" menu is a summary of the option you selected.
The iSCSI VHD creation must be repeated until all available disk space of the D:\ has been allocated to the iSCSI Target. As you create VHDs, they will appear in the "Virtual Disks" menu.
After all VHDs (LUNs) have been created, the iSCSI target will need to be rescanned by VRM in BVMS.
After the target has successfully updated, the LUNs will need to be formatted in "VRM format"
After formatting is complete, utilize the VRM Monitor Page to verify that all video devices have received new spans and are recording.