Deployment Guide

CAUTION: Make sure that your data is backed up before removing an expansion enclosure.
Before physically removing an expansion enclosure, make sure that none of the drives in the enclosure are managed by the Storage
Center Operating System.
Steps
1. Connect to the Storage Center using the Dell Storage Manager Client.
2. Use the Dell Storage Manager Client to release the disks in the expansion enclosure.
3. Select the expansion enclosure to remove and click Remove Enclosure. The Remove Enclosure wizard starts.
4. Confirm the details of your current installation and click Next to validate the cabling.
5. Locate the expansion enclosure in the rack. Click Next.
6. Disconnect the A-side chain.
a. Disconnect the A-side cables that connect the expansion enclosure to the storage system. Click Next.
b. Reconnect the A-side cables to exclude the expansion enclosure from the chain. Click Next to validate the cabling.
7. Disconnect the B-side chain.
a. Disconnect the B-side cables that connect the expansion enclosure to the storage system. Click Next.
b. Reconnect the B-side cables to exclude the expansion enclosure from the chain. Click Next to validate the cabling.
8. Click Finish.
Related links
Release the Disks in the Expansion Enclosure
Disconnect the SC100/SC120 Expansion Enclosure from the A-Side of the Chain
Disconnect the SC100/SC120 Expansion Enclosure from the B-Side of the Chain
Release the Disks in the Expansion Enclosure
Use the Dell Storage Manager Client to release the disks in an expansion enclosure before removing the expansion enclosure.
About this task
Releasing disks causes all of the data to move off the disks.
NOTE: Do not release disks unless the remaining disks have enough free space for the restriped data.
Steps
1. Use the Dell Storage Manager Client to connect to the Storage Center.
2. Click the Hardware tab.
3. In the Hardware tab navigation pane, expand the enclosure to remove.
4. Select the Disks node.
5. Select all of the disks in the expansion enclosure.
6. Right-click on the selected disks and select Release Disk. The Release Disk dialog box opens.
7. Select Perform RAID rebalance immediately.
8. Click OK.
When all of the drives in the expansion enclosure are in the Unassigned disk folder, the expansion enclosure is safe to remove.
Disconnect the SC100/SC120 Expansion Enclosure from the A-Side of the Chain
Disconnect the A-side cables from the expansion enclosure that you want to remove.
1. Disconnect the A-side cable (shown in orange) from expansion enclosure 1: top EMM, port A. The B-side cables continue to
carry I/O while the A-side is disconnected.
2. Remove the A-side cable between expansion enclosure 1: top EMM, port B and expansion enclosure 2: top EMM, port A.
Adding or Removing an Expansion Enclosure
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