Extended Address Volume (EAV) can be assigned to a TrueCopy for Mainframe pair. EAV is a Hitachi function to define a large capacity VOL that is not supported by existing 3390 type volumes. You can create a pair with or without EAV. The following table shows EAV availability for P-VOLs and S-VOLs.
|
P-VOL (Device emulation type) |
S-VOL (device emulation type) |
|
|---|---|---|
|
EAV (3390-A) |
No EAV (3390-X*) |
|
|
EAV (3390-A) |
Available |
Not available |
|
non-EAV (3390-X*) |
Available |
Available |
|
* 3390-X indicates the 3390 series other than 3390-A. For these other supported 3390 emulation types, see the table in System requirements and specifications. |
||
Emulation type 3390 combined with non-3390 device types is not available.
To enable data migration from existing storage to the EAV (3390-A), you can combine a non-EAV (3390-X) as the P-VOL and an EAV (3390-A) as the S-VOL. However, a reversed combination in which EAV (3390-A) is the P-VOL and non-EAV (3390-X) is the S-VOL is not supported.
You can use data migration from an earlier storage model P-VOL to an EAV S-VOL.