The amount of memory to allocate to the VRA. The amount determines the maximum buffer size for buffering IOs written by the protected virtual machines by the protecting VRA, before they are sent over the network to the recovery VRA. The recovery VRA also buffers the incoming IOs until they are written to the journal.
The VRA memory values and associated VRA Buffer Pool Sizes are as follows:
1GB VRA memory = 461MB VRA Buffer Pool Size
2GB VRA memory = 1485MB VRA Buffer Pool Size
3GB VRA memory = 2509MB VRA Buffer Pool Size
The protecting VRA can use 90% of the buffer for IOs to send over the network and the recovery VRA can use 75% of the buffer. That is, for example, a protecting VRA defined with 2GB of RAM can buffer approximately 1337MB before the buffer is full and a Bitmap Sync will occur.