ZyXEL Communications NSA-2400 - Manual (Page 11)

ENGLISH
10
• This screen
shows you
the possible
volume con-
figurations
available
depending
on how
many hard
disks you
have
installed.
You can only
create one
volume in
the wizard.
A recom-
mended
default volume has been chosen for you. Choose RAID0 for best performance but no data
protection in the event that a dsk fails. Choose RAID10 if you have four disks, want good
write performance with data redundancy. Choose RAID1 if you have two or four disks in the
NSA; half the disk space is used for data backup. If you have four disks, you could choose
RAID5 where data parity and striping allow you to recover data even if one disk
fails.Choose RAID5_SPARE to have one disk in the RAID5 volume on permanent standby
in the event that a disk fails.Click Next to continue (without saving anything yet).
• The next
screen asks
you how
much vol-
ume space
you want to
reserve for
snapshots.
A snapshot
is a static
picture of
your data
stored in an
NSA vol-
ume at a
particular
moment in time.