Dot Hill Systems II 200 FC service manual Power-On Sequence

Note – The connection of a FC, SATA, or SATA SE array to Fibre Channel HBAs that use different speeds (1 Gbit and 2 Gbit) on the same channel is not supported. You can, however, mix 1-Gbit and 2-Gbit Fibre Channel HBAs on different channels. This limitation is due to the design of SANnet II 200 Fibre Channel array port bypass circuitry and the inability of Fibre Channel to support auto-negotiation in a multi-drop loop configuration.

Use fiber-optic cables to connect host channels to Fibre Channel HBAs on your host computers or to other devices such as storage switches.

1.Connect a fiber-optic cable to an HBA or FC port on each host or storage switch you want to connect to the array.

2.Connect the SFP connector at the other end of each of these fiber-optic cables to host channel SFP connectors on the back of the array.

If there is no SFP connector in the port you want to use, first insert an SFP connector into the port as described in “Changing Your SFP Configuration” on page 4-24.

4.16Power-On Sequence

Power on the equipment in the following order so the host computer discovers all connected arrays:

1.Expansion units

2.RAID array

3.Host computers

If an array is connected to a host using a serial port connection and powered on, the host terminal window displays a series of messages, as shown in the following example.

SANnet II FC Array is installed with			1024MBytes SDRAM
Total channels:	6
Channel: 0 is a	host	channel, id: 40
Channel: 1 is a	host	channel, id: 41
Channel: 2 is a	drive channel, id: 14, 15
Channel: 3 is a	drive channel, id: 14, 15
Channel: 4 is a	host	channel, id: 70
Channel: 5 is a	host	channel, id: 71
Scanning channels. Please wait a few			moments!
Preparing to restore		saved persistent reservations. Type
'skip' to skip:

Do not use the skip option shown at the bottom of the example. This option is reserved for support personnel performing testing.

4-32SANnet II 200 FC, SATA, and SATA SE Array Installation, Operation, and Service Manual • March 2005