Specifications

92 en | Terminal Operation SCSI to SATA RAID Subsystem | Administrator’s Manual
F.01U.027.802 | V1 | 2006.11 Bosch Security Systems
7.2.3 Optimization for Random or Sequential I/Os
Fig. 7.2 Optimization for Random or Sequential I/Os
Page
Choose “Optimization for Random I/O” or “Optimization for Sequential I/O,” then press
[ENTER]. The “Random” or “Sequential” dialog box will appear, depending on the option you
have selected. Choose Yes in the dialog box that follows to confirm the setting. Press [ESC] to
exit and the setting will take effect after the subsystem is restarted.
7.2.4 Write-Back Cache Enable/Disable
Fig. 7.3 Write-Back Cache Enable/Disable Page
Stripe Size:
Opt. for Sequential I/O
Stripe Size:
Opt. for Random I/O
RAID0 128KB 32KB
RAID1 128KB 32KB
RAID3 16KB 4KB
RAID5 128KB 32KB
NRAID 128KB 32KB
Table 7.1 RAID Levels, Optimization Modes, and Stripe Sizes
i
NOTICE!
There is no longer a 512GB threshold for array optimization modes. If an array is larger than
16TB, only the optimization mode for sequential I/Os can be applied. Since logical drives of
this size may not be practical, there is actually no limitation on the optimization mode and
array capacity.