ACTi GNR-3000 V3.0.09 - Manual (Page 27)

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GNR-3000 System Administrator’s Manual
27
Windows Volume Configuration
RAID
Type
Windows
Volume Type
Description
--
Simple
Volume
It is the most basic method to make the available space on a single
disk a volume; you can create more than one volumes on a single
disk to make the most use of the disk capacity.
--
Spanned
Volume
This volume type is also called JBOD (Just a Bunch of Drives),
combing multiple disks into a single logical volume. This method
does not offer any advantage in terms of reading/writing speeds,
parity, or redundancy, but sacrifices no disk space because the total
storage equals to the sum of each individual disk’s storage.
However, since the data is written to the physical disks sequentially,
any failure of a single disk is likely to fail the whole array.
Raid 0
Striped
Volume
This configuration combines two or more disks as a single logical
volume without using any parity and redundancy. However, this
method highly increases the writing/reading speeds by equally
splitting the data into all the disks, which means that the more disks
you have in this RAID, the faster the data reading and writing will be.
In the example, a piece of
information is being written to a
JBOD. After the first disk is full, the
rest of this data will then be written
to the next disk.
In the example, there are two disks
combined into one RAID 0 array, a
piece of information is first split into
two data blocks and then written to
both disk at the same time.
Disk Full