Adding Expansion Enclosures - Silicon Graphics InfiniteStorage S330 RAID User Manual

Adding Expansion Enclosures

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You can add new expansion enclosures to an existing storage array without turning off the array
or interrupting data flow.
Caution: You can add only new expansion enclosures to the storage array. This means that there
must be no existing information on the drives in the expansion enclosure you want to install. If the
enclosure you want to install currently contains volumes or configured hot spare drives, you must
delete them before adding the enclosure to a new configuration.
You need to refer to the installation manual accompanying your controller and expansion
enclosures to complete this procedure.
To install one or more new expansion enclosures into an existing loop, follow these steps:
1. Follow the instructions in the SGI InfiniteStorage TP9300 and TP9300S RAID Installation
and Upgrade Guide to set up and mount the new expansion enclosures and to connect them
to each other.
2. Using Figure 4-9 as a guide, connect the cables from the controller enclosure to the new
expansion enclosure(s). Then, if applicable, connect the cables from the existing expansion
enclosure(s) to the new expansion enclosure(s). See Figure 4-10 on page 67 for an example
of a single conroller storage array connection.
Warning:
Electrostatic discharge can damage sensitive components. Use a grounded
wrist strap or other antistatic precautions before handling enclosure components.
3. After you have connected the cables to the new expansion enclosures, the controllers will
locate the new disk drives.
Important: Depending on how long it takes you to complete step 2, TPSSM may report a
loss of redundancy error on the expansion enclosures in the loop. This error will not interfere
with data flow, and will disappear after you finish installing the expansion enclosure(s).
4. Use TPSSM to check the status of the new drives and correct any errors found.
5. Use TPSSM to configure the new drives.
Adding Expansion Enclosures
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