Replication using 4096 byte or 512 byte disk block sizes - assure_mimix - 6.0

Assure MIMIX for AIX Guide
Product type
Software
Portfolio
Integrate
Product family
Assure
Product
Assure MIMIX™ Software for AIX
Version
6.0
ft:locale
en-US
Product name
Assure MIMIX for AIX
ft:title
Assure MIMIX for AIX Guide
Copyright
2025
First publish date
2003
ft:lastEdition
2025-03-12
ft:lastPublication
2025-03-12T05:07:12.494000

IBM AIX introduced support for DISK BLOCK SIZE of 4096 bytes in AIX 7.1 TL3 and AIX 6.1 TL9.

You can replicate your source data, as long as the source and target disks have the same DISK BLOCK SIZE. For example, you can replicate your source data that resides on disks with a DISK BLOCK SIZE of 512 bytes to target disks with a DISK BLOCK SIZE of 512 bytes. Additionally, Assure MIMIX DR for AIX Containers must reside on disks with a DISK BLOCK SIZE of 512 bytes.

You can replicate your source data that resides on disks with a DISK BLOCK SIZE of 4096 bytes to target disks with a DISK BLOCK SIZE of 4096 bytes. Additionally, Assure MIMIX DR for AIX Containers must reside on disks with a DISK BLOCK SIZE of 4096 bytes.

Use the AIX command lsvg <vgname> to determine the DISK BLOCK SIZE of a volume group.

Note: A replication group cannot contain a mix of 4096 byte and 512 byte disk block size types.