4.0 Determining Drive and Sled Designations

The Diamond Storage Array has been designed with 12 sleds, each holding two drives. The easiest way to configure a array is to use all the drives on all the sleds. The firmware uses a numbering system to determine which drives and sleds it is affecting.

We recommend that all sled slots are filled

 

 

logical disk or Logical Unit (LUN). Each LUN is

contiguously, starting with the first slot next to the

broken into logical blocks of 512 bytes each,

 

 

management card.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

numbered 0 through n (the Logical Block Number

When configuring a Diamond Array with fewer

or LBN). A 100 GB LUN has approximately

 

 

than 12 drive sleds, you must consider several

 

 

 

 

 

 

200,000,000 logical blocks.

 

 

 

 

 

 

 

factors: RAID level, number of physical

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

drives/sleds and the end configuration you are

 

 

Physical numbering

 

 

 

 

 

 

 

trying to achieve. Review the information about

 

 

 

 

 

 

 

The Diamond RAID Storage Array contains

 

 

each configuration to determine how each

 

 

 

 

 

 

• Up to 24 physical disk drives

 

 

 

 

 

 

 

configuration would be affected by using fewer

 

 

 

 

 

 

 

sleds.

 

 

 

 

 

 

 

 

• Two drives mounted on 12 physical drive sleds

 

 

 

 

 

 

 

 

 

 

• Sleds are numbered 1-12, starting at the top

 

 

Numbering conventions

 

 

 

 

 

 

 

(floor units) or the left (rackmount units).

 

 

The Diamond Storage Array with firmware

 

 

• Each sled is connected to its own internal ATA

version 3.1 and newer uses a unique numbering

 

bus with two disk drives, numbered 1 and 2.

 

 

• Two green LEDs, labeled Drive 1 and Drive 2,

 

convention to orient its drives and sleds to the

 

 

 

controlling firmware. Older versions do not use

 

indicate activity for the two drives. They remain

 

solidly lighted when there is no activity.

 

 

this convention. (Refer to Updating Firmware on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

page 77 for information about updating the array

Logical numbering

 

 

 

 

 

 

 

firmware.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Logical numbering depends on

 

 

 

 

 

 

 

Physical refers to the physical drives in the array,

Management card

 

 

the RAID configuration of the

 

 

Drive 1

 

Drive 2

 

 

 

 

 

the hardware that actually exists in a physical

 

 

storage array. S Class firmware

 

 

 

 

 

LUN 1

 

LUN 13

1

 

 

 

 

 

 

 

 

 

 

 

 

sense.

 

 

 

 

 

 

 

 

includes RAID Level 0, RAID

Drive 1

 

Drive 2

2

 

Logical (or virtual) refers to what the host

 

 

Level 1, RAID Level 10 and

LUN 2

 

LUN 14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

operating system recognizes as an entity. Two

 

 

RAID Level 5 capability. A

Drive 1

 

Drive 2

3

 

 

 

LUN 3

 

LUN 15

 

 

 

 

 

 

physical drives may be seen as one logical drive

variety of configurations may

Drive 1

 

Drive 2

4

 

by the operating system.

 

 

 

 

 

 

 

be selected using the

 

 

LUN 4

 

LUN 16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Logical disks do not always map one-to-one with

QuickRAID0 command. The

Drive 1

 

Drive 2

5

Floor

LUN 5

 

LUN 17

 

default configuration is

 

 

 

 

 

 

 

 

physical disks. In RAID configurations, for

 

 

 

 

 

 

 

 

 

 

Drive 1

 

Drive 2

 

Model

 

 

QuickRAID0 0 or JBOD (Just

 

6

 

 

LUN 6

 

LUN 18

example, several physical disk drives (or portions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

a Bunch of Disks).

 

 

Drive 1

 

LUN

 

 

DriveSleds

 

 

 

 

 

 

 

 

 

 

 

 

Drive 1

 

Drive2 1

 

 

of several physical drives) are grouped into a

 

 

 

 

 

 

 

 

LUN 7

 

LUN 20

 

7

 

 

 

 

 

 

 

 

 

LUNLUN1912

 

 

 

 

 

 

 

 

 

 

LUN 6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

19

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drive 1

 

Drive 2

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rack Mount Drive Sleds

 

 

 

 

 

LUN 8

 

LUN 20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

4

5

6

 

7

8

9

10

11

12

 

Drive 1

 

Drive 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LUN 9

 

LUN 21

9

 

 

Disk 2

Disk 2

Disk 2

Disk 2

Disk 2

Disk 2

 

 

LUNDisk192

Disk 2

Disk 2

Disk 2

Disk 2

Disk 2

 

 

 

 

 

 

 

 

 

 

Drive 1

 

Drive 2

 

 

 

 

LUN 13

LUN 14

LUN 15

LUN 16

LUN 18

 

 

LUN 20

LUN 20

LUN 21

LUN 22

LUN 23

LUN 24

LUN 10

 

 

 

 

 

LUN 16

LUN 17

 

 

LUN 19

 

LUN 22

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drive 1

 

Drive 2

 

11

 

 

Disk 1

Disk 1

Disk 1

Disk 1

Disk 1

Disk 1

 

 

Disk 1

Disk 1

Disk 1

Disk 1

Disk 1

Disk 1

 

 

 

 

 

LUN 11

 

LUN 23

 

 

LUN 1

LUN 2

LUN 3

LUN 4

LUN 5

LUN 6

 

 

LUN 7

LUN 8

LUN 9

LUN 10

LUN 11

LUN 12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drive 1

 

Drive 2

12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LUN 12

 

LUN 24

 

Management Card

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual

Page 26
Image 26
ATTO Technology S-Class manual Determining Drive and Sled Designations, Physical numbering, Logical numbering

S-Class specifications

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