Hp StorageWorks 3000 RAID Array Bedienungsanleitung PDF herunterladen (Seite 47)

RAID Array 3000 Controller 2-5

Compaq Confidential – Need to Know Required

Writer: Bob Young Project: RAID Array 3000 Controller Shelf Hardware User’s Guide Comments:

Part Number: EK-SMCPQ-UG. D01 File Name: c-ch2 RAID Array 3000 Controller.doc Last Saved On: 12/4/00 1:08 PM

■

Stripesets (RAID 0) combine disk drives in serial to increase transfer or

requests rates.

■ Mirrorsets (RAID 1) combine disk drives in parallel to provide a highly

reliable storage unit.

■ RAID 4 provides striping with a fixed parity drive.

■ RAIDsets (RAID 5) combine disk drives in serial— just like

stripesets— but also store parity data to ensure high reliability.

■ Stripe mirrorsets (RAID 0 + 1) combine mirrorsets in serial to provide

the highest throughput and availability of any storage unit.

Controller Reset and LED Indicators

Figure 2– 4 shows the front panel of the controller. All LEDs are numbered

from left to right. The reset button (LED 0) flashes green about once every

second (heartbeat) to indicate that the controller is operating normally. LEDs 1

through 4 display host and disk channel activity (amber). LED 5 (normally

Off) turns On red during a controller failure. The LED/Reset switch interface

is listed in Table 2– 1.

Table 2-1

LED/Reset Switch Interface

LED # Name

0 Heartbeat/LED controller reset switch (green)

1 Host channel 0 activity LED (amber)

2 Host channel 1 activity LED (amber)

3 Disk channel 0 activity LED (amber)

4 Disk channel 1 activity LED (amber)

5 Fault LED (red)

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 111 112

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Hp StorageWorks 3000 RAID Array Bedienungsanleitung Seite 47