D-Link DSN-3400-20 User Guide - Page 46

Making Your Own Volume Selection Choices

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3.2.2 Making Your Own Volume Selection Choices If you selected Let me make my own choices (Advanced) in the Volume Name screen on page 30 and clicked Next, the Volume Composition screen appears (see Figure 3-13). Use the following procedure to complete the volume creation process and record your settings in Table C-1. Figure 3-13. Volume Composition Screen 2. In the Volume Composition screen, select a composition type. The choices are: - Stripe/Mirror - creates two RAID 0 stripes, with a RAID 1 mirror created over them for replicating and sharing data among drives. Stripe/mirror volumes support an even number of drives from 4 to 32, and provide improved performance and data redundancy. - Parity - provides redundancy that helps detect data integrity defects and increases data resiliency with respect to individual drive failure. Parity volumes support 3 to 17 drives, although the effective storage capacity of the volume will be reduced by one drive, which is reserved for parity data. - Mirror - creates an exact copy of a set of data on two or more drives for data redundancy. Mirror volumes support 2 to 16 drives. - Stripe - splits data evenly across two or more drives for improved performance; however, there is no parity information for redundancy. Striped volumes support 2 to 16 drives, plus one extra drive for parity. - JBOD - uses two or more physical drives to create one logical drive, with no data redundancy. JBOD volumes support a minimum of 1 drive and can span across additional drives if the capacity required exceeds that which a single drive can provide. 3. Click Next. If you selected Stripe/Mirror, Parity, or Stripe, a Stripe Width screen similar to the one in Figure 3-14 appears and you should proceed to the next step. Otherwise, the Number of Drives screen appears (see Figure 3-15) and you should skip to step 5. 36 Chapter 3 Managing Volumes

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36
Chapter 3
Managing Volumes
3.2.2 Making Your Own Volume Selection Choices
If you selected
Let me make my own choices (Advanced)
in the Volume Name screen
on page 30 and clicked
Next
, the Volume Composition screen appears (see Figure 3-13).
Use the following procedure to complete the volume creation process and record your
settings in Table C-1.
Figure 3-13. Volume Composition Screen
2.
In the Volume Composition screen, select a composition type. The choices are:
–
Stripe/Mirror
– creates two RAID 0 stripes, with a RAID 1 mirror created over
them for replicating and sharing data among drives. Stripe/mirror volumes
support an even number of drives from 4 to 32, and provide improved
performance and data redundancy.
–
Parity
– provides redundancy that helps detect data integrity defects and
increases data resiliency with respect to individual drive failure. Parity volumes
support 3 to 17 drives, although the effective storage capacity of the volume
will be reduced by one drive, which is reserved for parity data.
–
Mirror
– creates an exact copy of a set of data on two or more drives for data
redundancy. Mirror volumes support 2 to 16 drives.
–
Stripe
– splits data evenly across two or more drives for improved performance;
however, there is no parity information for redundancy. Striped volumes
support 2 to 16 drives, plus one extra drive for parity.
–
JBOD
- uses two or more physical drives to create one logical drive, with no
data redundancy. JBOD volumes support a minimum of 1 drive and can span
across additional drives if the capacity required exceeds that which a single
drive can provide.
3.
Click
Next
.
If you selected
Stripe/Mirror
,
Parity
, or
Stripe
, a Stripe Width screen similar to
the one in
Figure 3-14
appears and you should proceed to the next step. Otherwise,
the Number of Drives screen appears (see
Figure 3-15
) and you should skip to step
5.