RS16 FS – Manual v.6.1A
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usual without any impact to end users. The "on-the-box" implies that it does not
require any proprietary agents installed at host side. The snapshot is taken at
target side and done by
ULTRASTOR
controller. It will not consume any host
CPU time thus the server is dedicated to the specific or other application. The
snapshot copies can be taken manually or by schedule every hour or every day,
depends on the modification.
ULTRASTOR
controller is the most cost-effective disk array controller with
completely integrated high-performance and data-protection capabilities which
meet or exceed the highest industry standards, and
the best data solution for
small/medium business (SMB) users.
1.2 Terminology
The document uses the following terms:
RAID
RAID is the abbreviation of
“R
edundant
A
rray of
I
ndependent
D
isks
”
. There are different RAID levels with different degree
of the data protection, data availability, and performance to
host environment.
PD
The
P
hysical
D
isk belongs to the member disk of one specific
RAID group.
RG
RAID group
. A collection of removable media. One RG
consists of a set of VDs and owns one RAID level attribute.
VD
Virtual disk
. Each RG could be divided into several VDs. The
VDs from one RG share the same RAID level, but may have
different volume capacity.
CV
C
ache
V
olume. Controller uses onboard memory as cache.
All RAM (except for the part which is occupied by the
controller) can be used as cache.
Caution
Snapshot / rollback features need
512MB
RAM or more.
Please refer to RAM certification list in Appendix A for more
detail.
