HP XP P9500 Storage - Manual (Page 110)

Table 62 Comparison of copying processes (continued)
HP FC Z IBM FlashCopy Compared item
pair T-VOL that you establish in NOCOPY
mode S-VOL. In this state if you release the FC Z
pair, the data of Cnt Ac-J Z P-VOL and
S-VOL will be different.
Neither local or remote relationships are
created. The relationship on the remote site is not
created, though the local relationship may The operation used when
relationship-creation fails in the remote
site for Preserve Mirror FlashCopy
be created. In this case, the Cnt Ac-S Z
volume associated with the FC Z T-VOL is
in suspend status.
Comparison of processing in releasing relationships
The following table compares the relationship releasing processes of IBM FlashCopy and HP
Compatible FlashCopy.
Table 63 Differences of relationship releasing process between IBM FlashCopy and HP Compatible FlashCopy
HP FC Z IBM FlashCopy Compared item
When a part of the existing relationship area
is included in the extent area specified by the The command deletes the relationships
existing within the specified extent area. Withdraw command (specifies extent
area).
Withdraw command, all existing relationships
are withdrawn.
When the specified extent area is
included only in a part of the central See the following figure.
existing relationship area, only the
existing relationships of the area will be
divided up.
Not supported. The command will finish
abnormally. Relationships will not be deleted. The command will finish normally.
Relationships will not be deleted. REMOVEFCPY (ICKDSF CONTROL
command)
Part of the volume relationship is
withdrawn. The operation for establishing a dataset
relationship using DFSMSdss command, •
When you specify the source volume of a
volume relationship as the copy target, the
and specifying the source or target
entire volume relationship will be
withdrawn.
volume of a volume relationship as the
copy target
• When you specify the target volume of a
volume relationship as the copy target, the
volume relationship will be withdrawn.
If undeletable relationships exist in the multiple
target relationships, the command ends If undeletable relationships exist in the
multiple target relationships, the The operation when you delete multiple
relationships by one withdraw command
abnormally. Even the deletable relationships
are not deleted. command ends abnormally or normally.
The deletable relationships are all
deleted.
The dataset is deleted correctly. The volume
relationships are withdrawn when the copy
operation is completed. The dataset is deleted correctly. The
volume relationships are not withdrawn. Deleting the S-VOL dataset relationship
of volumes that are not Incremental
110 Feature comparison with IBM product