HP XP20000XP24000 Disk Array - Manual (Page 11)

S-VOL Disable Function
When storage system copy software copies data, the data on the copy destination volume (also known
as the secondary volume) will be overwritten. If a volume containing important data is specified as a
secondary volume by mistake, storage system copy software can overwrite important data on the volume
and you could suffer loss of important data. Data Retention Utility enables you to avoid such loss of data.
If you assign the S-VOL Disable attribute to a volume, storage system copy software will be unable to
copy data to that volume. Also, if you assign the Read Only attribute or Protect attribute to a volume as
an access attribute, any other write operations will be prohibited on that volume. For example, business
application software will be unable to write data to such a volume.
To prohibit storage system copy software from copying data to a volume, but do not want to prohibit
other write operations to the same volume, you must ensure that the volume has the Read/Write attribute.
Also, you must assign the S-VOL Disable attribute to that volume to prevent storage system copy software
from copying data to the volume. For detailed information about how to do this, see Protecting Logical
Volumes Against Storage System Copy Operations (Setting the S-VOL Disable Function) on page 22.
Notes :
• Storage system copy software refers to HP StorageWorks XP Continuous Access Software, HP
StorageWorks XP Continuous Access Journal Software, HP StorageWorks XP Business Copy
Software, and HP StorageWorks XP External Storage Software.
• Secondary volumes (that is, copy destination volumes) are often referred to as S-VOLs in storage
system manuals.
Reserve Function
The HP StorageWorks XP LUN Manager software enables Remote Web Console users to change LU
path configurations and command device configurations. However, if you use Data Retention Utility to
protect a volume, Remote Web Console users will be unable to change LU path settings and command
device setting on the volume. For detailed information about how to prevent Remote Web Console users
from changing the settings, see Preventing Remote Web Console Users from Configuring LU Paths and
Command Devices (Setting the Reserve Function) on page 24.
The Reserved column in the Data Retention window shows whether Remote Web Console users can
change LU path settings and command device settings on the volume.
Note : If RAID Manager is installed on a host, you can change LU path settings and command device
settings from the host.
Interoperability with Other Products and Functions
This section provides information on using Data Retention Utility with other products.
HP StorageWorks XP LUN Expansion (LUSE)
You cannot combine volumes that do not have the Read/Write attribute when you create a LUSE volume.
You can, however, assign an access attribute other than Read/Write to the resulting LUSE volume.
You cannot release a LUSE volume that does not have the Read/Write attribute.
HP StorageWorks XP Virtual LVI/LUN
You cannot convert volumes that do not have the Read/Write attribute into spaces.
You cannot initialize customized volumes that do not have the Read/Write attribute.
XP24000 Data Retention Utility User's Guide 11