Attention:
To avoid damage to the SAS cables, consider the following
precautions:
v
When you route the cable along a folding cable-management arm, leave enough
slack in the cable.
v
Route the cable away from places where it can be damaged by other devices in
the rack cabinet.
v
Do not put excess weight on the cable at the connection point. Make sure that
the cable is well supported.
To connect a mini-SAS cable, insert the mini-SAS connector into a mini-SAS port.
Make sure that it locks into place.
To remove a mini-SAS cable, complete the following steps:
1. Put one finger into the hole on the blue plastic tab on the mini-SAS connector
and gently pull on the tab to release the locking mechanism.
2. As you pull on the tab, pull out the connector to remove it from the port.
Connecting storage expansion enclosures to the DS3300
Attention
Before you power-on the storage subsystem, it must contain at least four
drives. The storage subsystem must contain drives when it is powered-on;
otherwise, your Software Feature Pack or Premium Feature key might be lost
and you must regenerate it. If this happens, see the instructions at
http://www.ibm.com/storage/fasttkeys/.
In addition, the resulting insufficient load to the enclosure power supplies
might cause them to intermittently appear to have failed, falsely indicating that
the power supplies are bad.
All drives in the DS3300 storage subsystem and the connected storage
expansion enclosure or enclosures must contain no previously configured
data.
In the initial installation of the DS3300, you can add only
new
storage expansion
enclosures to the DS3300 storage subsystem. This means that there must be no
existing configuration information about the storage expansion enclosures that you
want to install.
Note:
In this document, EXP3000 storage expansion enclosures are used as
examples in text and illustrations.
If the storage expansion enclosures that you want to install currently contain logical
drives or configured hot spares and you want them to be part of the DS3300
storage subsystem configuration, see the
IBM DS3000 Storage Manager Version 2
Installation and Support Guide
, which is in the Documentation folder on the IBM
System Storage DS3000 Support
CD. Incorrect drive migration might cause loss of
configuration and other storage subsystem problems. Contact your IBM
technical-support representative for additional information.
Chapter 3. Cabling the storage subsystem
25
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