User`s manual

FastTrak100 TX/LP™ Series User Manual

Selecting Array Type

1. Under the Definition section of this menu, highlight the Array # for which you

want to assign a RAID level.

2. Use the [Space] key to cycle through three array types: Performance (RAID 0

Striping), Security (RAID 1 Mirroring, RAID 0+1 Striping/Mirroring (for 4 drives),

or Capacity (Spanning)). See page 70 about RAID levels.

[ Define Array Definition Menu ]

Array No RAID Mode Total Drv Capacity(MB) Status

Array 1 Stripe 2 16126 Functional

Stripe Block: 64 KB Gigabyte Boundary: ON

[ Drive Assignments ]

Channel:ID Drive Model Capacity (MB) Assignment

1 : Master QUANTUMCR8.4A 8063 Y

1 : Slave QUANTUMCR8.4A 8063 N

2 : Master QUANTUMCR8.4A 8063 Y

[ Keys Available ]

[↑] Up [↓] Down [ESC] Exit [Space] Select [Ctrl-Y] Save

Selecting Stripe Block

For RAID 0 and RAID 0+1 arrays you may manually select the “stripe block size.” Use

the Spacebar to scroll through choices progressing as follows (1, 2, 4, 8, 16 . . .

1024).

The size selected affects how FastTrak100 sends and retrieves data blocks from the

drives. You will need to perform your own testing to determine how the data block

size is affecting your particular use of the array. In general, a larger block size is

better when handling large data transfers (such as in A/V editing or graphics) while a

smaller block size is better when handling e-mail and other common server data. The

default is 64K.

Gigabyte Boundary

The Gigabyte Boundary feature is designed for mirrored arrays (RAID 1 or

RAID 0+1) in which a drive has failed and the user cannot replace the drive with the

same capacity or larger. Instead, the Gigabyte Boundary feature permits the

installation of a replacement drive that is slightly smaller (within 1 gigabyte) than the

remaining working drive (for example, a 20.5 GB drive would be rounded down to 20

GB). This can be helpful in the event that a drive fails and an exact replacement model