Product specifications

Infortrend
2-8
coordinated with the subsystem’s
caching mode setting. Other choices are
“Write-back” and “Write-through.”
2.4.8 Initialization Mode
This menu allows you to determine if the
logical drive is immediately accessible. If
the Online method is used, data can be
written onto it before the array’s
initialization is completed. Users may
proceed with array configuration, e.g.,
including this array in a logical volume.
Array initialization can take a long time especially for those
comprising large capacity. Setting to “Online” means the array is
immediately accessible and that the controller will complete the
initialization when I/O demands become less intensive.
2.4.9 Stripe Size
This menu allows you to change the
array stripe size. Setting to an
incongruous value can severely drag
performance. This item should only be
changed when you can be sure of the
performance gains it might bring you.
Listed below are the default values for an array. For each logical
drive, the default value for the stripe size is determined by the
Optimization Mode and the RAID level chosen.
Table 2 - 2 RAID Level, Optimization Modes, and Stripe
Size
Opt. for Sequential I/O Opt. for Random I/O
RAID0 128KB 32KB
RAID1 128KB 32KB
RAID3 16KB 4KB
RAID5 128KB 32KB
RAID6 128KB 32KB
NRAID 128KB 32KB
When you are done setting logical drive preferences, press ESC and
use your arrow keys to select “Create Logical Drive?”. Press ENT
for two seconds to proceed.
2.4.10 Beginning Initialization
Press ESC to return to the previous menu.
Use the up or down arrow keys to choose
“Create Logical Drive,” then press ENT
Create Logical
Drive ?
Initialization
Mode Online..
Stripe size
Default ?