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Block Size (default: 64K)
[64K, 128K are the supported block sizes]
This option allows you to specify the block size (also known as
“stripe
size”)
for specific
array types (RAID 0, 1, 5, 6, 10, and 50). Adjusting the block size allows you to tailor the
array performance towards specific application. Consider the sizes of disk I/O data you
are dealing with; as a general rule larger disk I/O may benefit from smaller block sizes,
and smaller disk I/O may benefit from larger block sizes. A block size of 64 KB is
recommended since it gives balanced performance for most applications.
Capacity (Default: Maximum)
The total amount of space you want the RAID array to take up. When creating RAID
levels, disk capacities are limited by the smallest disk.
Example Capacity calculation:
A RAID 5 organizes data in the manner shown below. All parity data will become
unusable for the user and not included in the total disk capacity.
Disk 1
Disk 2
Disk 3
Disk 4
Data 1
Data 2
Data 3
Parity
Data 4
Data 5
Parity
Data 6
Data 7
Parity
Data 8
Data 9
Parity
Data 10
Data 11
Data 12
Therefore, RAID 5 capacity will be [SMALLEST DISK CAPACITY] * (number of disks
–
1).
Sector Size (Default: 512B)
This option is irrelevant for Windows XP 64 and later.
Current OS already support
larger volumes, and introduce a partitioning method known as GPT (GUID partition
table). This option, also known as VSS (Variable Sector Size) allows you to specify the
sector size of the array, for use with older Windows Operating Systems.
Logical Device Information
Logical device tab is the default page upon clicking the Logical tab of the WebGUI. This
page contains information about your RAID arrays and individual disks your system
detects.
Logical Device Information
Arrays you create and the properties associated with them will appear here.
Maintenance
Once an array has been created, click maintenance for options to manage your array.