APC 15000 RAID manual Connecting the Controller, Disk ports Host port 1 Host port

Controller Installation

2.2.3Connecting the Controller

To set up the disk enclosures and connect them to the controller, do the following.

1.There are 10 disk channels on the controller. They correspond with disk ports. The disk ports are labeled as follows (Figure 2–1):

DISK A = Channel A	DISK B = Channel B
DISK C = Channel C	DISK D = Channel D
DISK E = Channel E	DISK F = Channel F
DISK G = Channel G	DISK H = Channel H
DISK P = Channel P (parity)
DISK S = Channel S (spare)

Using the 10 copper SAS cables provided, connect these disk ports to your ten disk channels.

Disk ports

Host port 1 Host port 3

A	C	E	G	P	TEST
A B	C D	E F	G H	P	S
B	D	F	H	S

AC		CTRL	TEMP	FAN
FAIL		STATUS	STATUS	STATUS
	SYSTEM		DISK	DC
DISK CHANNELS	STATUS		STATUS	STATUS

HOST 1	HOST 1/2
	CLI

STATUS

ACT

1

2

1/2

HOST 2

TEST

HOST 3	HOST 3/4			ACT
	CLI	TELNET
				LINK
				ACT
	STATUS	LINK
				LINK
3	ACT
4
		CLI
		COM
HOST 4		LINK		AC
		ACT	MUTE	FAIL
				ALARM
PLACE PIN HERE				SILENCE

Host port 2 Host port 4

Figure 2–1I/O Connectors

2.Each controller supports up to four host connections. You may connect more than four client systems to the controller using switches and you can restrict user access to the LUNs (as described in Section 2.3 "Configuring the Controller" of this guide).

The Host ports are numbered 1 through 4 as shown in Figure 2–1.Connect your host system(s) or switches to these ports. For FC-8 models, ensure that the latches on the transceivers are engaged.

2.2.4Selecting SAS- ID for Your Drives

NOTE : The controller uses a select ID of 1.

2.2.5Laying Out your Storage Drives

Tiers, or RAID groups, are the basic building blocks of the controller. A tier can be catalogued as 8+1 or 8+2. In 8+1 mode, a tier contains 10 drives—eight (8) data drives (Channels A through H), one parity drive (Channel P), and one optional spare drive (Channel S). In 8+2 mode, a tier contains 10 drives— eight (8) data drives (Channels A through H) and two parity drives (Channel P and S).

The controller can manage up to 120 tiers.

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