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Chapter 3 Notes
73
Table 3-3 RV Access Restriction
Commands
Access restriction Description
replicate restore separate
Read/Write (RW) RV is enabled for read/write. - -
{
Read Only (RO) RV is enabled only for reading.
∆ ∆ ∆
Not Ready (NR) RV is disabled for read/write.
{ {
-
Not Available (NA)
RV is not recognized by the operating
system or the LU (Logical Unit) is
invalid.
- - -
{: Available ∆: Available with administrative restrictions -: Unavailable
RW: Read/Write RO: Read Only NR: Not Ready NA: Not Available
If “Read Only (RO)” is set for RV, keep the following operational influence in mind:
• If NTFS is used as a file system, reference to the RV is disabled.
• If FAT16/FAT32 is used as a file system, associate the file system with the drive by using the mount
command of the disk control operation commands or by starting [Disk Management] (Windows).
• If FAT16/FAT32 is used as a file system, an attempt to write to RV ends up with an error.
Therefore, do not use any application for automatically executing write operation for the drive. Do
not execute any operation (e.g., changing of a partition configuration) in which write to RV is
executed through [Disk Management] (Windows).
3
3
3
.
.
.
7
7
7
D
D
D
a
a
a
t
t
t
a
a
a
R
R
R
e
e
e
p
p
p
l
l
l
i
i
i
c
c
c
a
a
a
t
t
t
i
i
i
o
o
o
n
n
n
a
a
a
n
n
n
d
d
d
D
D
D
a
a
a
t
t
t
a
a
a
C
C
C
o
o
o
n
n
n
s
s
s
i
i
i
s
s
s
t
t
t
e
e
e
n
n
n
c
c
c
y
y
y
For making copies of operation data with the data replication function, and for putting the data in use,
the data must be that of a user’s desired point in time and the data must be complete. Furthermore,
using RV on Windows operating system requires consistency in the file system.
The following must be considered for making the replicated data usable:
(1) Separate and data consistency
To use files on RV from the backup server, MV and RV must be separated by Separate. For
guaranteeing data consistency, a static point is specified in before separation. Usually a static
point is specified by temporarily halting operation. Oracle8 and Microsoft SQL Server 2000
however, have a system of maintaining static point. Separation is enabled on such systems even
under operating status, without stopping operations.