Dell POWERVAULT MD1000 - Manual (Page 24)

24 Operating Your Storage Enclosure
6 Turn off the MD3000 enclosure.
7 Connect the MD1000 expansion enclosure(s) to the MD3000 enclosure, as shown in the Dell
PowerVault Compatibility Matrix (available from support.dell.com).
8 Power on the systems in the following order:
a Turn on the MD1000 expansion enclosure or enclosures. Wait for the enclosure status LED to
turn blue.
b Turn on the MD3000 enclosure and wait for the status LED to indicate that the unit is ready:
• If the status LED is solid amber, the MD3000 is still coming online.
• If the status LED is blinking amber, there is an error that can be viewed using the MD Storage
Manager.
• If the status LED is solid blue, the MD3000 enclosure is ready.
c After the MD3000 enclosure is online and ready, turn on any attached hosts.
NOTICE: If an MD1000 or MD3000 status LED is either blinking or solid amber, follow the troubleshooting steps in
the MD Storage Manager.
Changing Your Enclosure’s Operating Mode
If you decide to change the operating mode of your enclosure after initial configuration (for example,
from split mode to unified mode or vice versa), it is important to follow some basic steps to guard against
preventable problems.
To change to either mode from a previous configuration:
1 Back up all data contained in the enclosure and store the backed up data in a secure location.
2 When changing from unified mode to split mode, remove any virtual disk configurations that span slot
ranges 0-6 and 7-14. For more information, see your Server Administrator documentation.
NOTE: When changing from split mode to unified mode, some virtual disks may appear as foreign if the
configuration was not deleted before powering the enclosure back on. These disks must be imported via Server
Administrator or the PERC 5/E Ctrl-R BIOS utility before they can be used.
NOTE: If changing from unified mode to split mode, keep in mind that daisy chaining of enclosures is not supported
in split mode.
3 Power down the server.
4 Power down the enclosure by turning off both power supply/cooling fan modules.
5 Change the position of the enclosure mode switch (see Figure 1-7).
6 Rearrange the disks in the enclosure as necessary.
7 Power on the enclosure by turning on both power supply/cooling fan modules.
8 Power on the server.
9 Re-create any virtual disks within the enclosure, if necessary.