# Where can I access reference documentation for older versions of Aerospike?
**URL:** https://discuss.aerospike.com/t/where-can-i-access-reference-documentation-for-older-versions-of-aerospike/9219
**Category:** Configuration
**Tags:** xdr
**Created:** [February 15, 2022, 1:53am UTC](https://discuss.aerospike.com/t/where-can-i-access-reference-documentation-for-older-versions-of-aerospike/9219 "2022-02-15T01:53:19Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@shan.p](https://discuss.aerospike.com/u/shan.p)
#### Post date: [February 15, 2022, 1:53am UTC](https://discuss.aerospike.com/t/where-can-i-access-reference-documentation-for-older-versions-of-aerospike/9219/1 "2022-02-15T01:53:19Z")
Is there a way to access the reference documentation of older versions (for example 4.5) of Aerospike?
I have an Aerospike server running 4.5.0.3 (Enterprise edition) for which I need to enable XDR.
I am referring to the XDR configuration settings here: [https://docs.aerospike.com/operations/configure/cross-datacenter#example-configuration-parameters-for-xdr-topologies](https://docs.aerospike.com/operations/configure/cross-datacenter#example-configuration-parameters-for-xdr-topologies)
I want to enable something like this:
```auto
xdr {
enable-xdr true
datacenter migration {
node-address-port 10.1.115.246 3000
namespace nameSpaceName1A {
}
}
}
```
However the setting `node-address-port` is added only after version 5. Is there a way to access the configuration documentation for the older version?
---
### Author:  [@meher](https://discuss.aerospike.com/u/meher)
#### Post date: [February 15, 2022, 6:06am UTC](https://discuss.aerospike.com/t/where-can-i-access-reference-documentation-for-older-versions-of-aerospike/9219/2 "2022-02-15T06:06:39Z")
There isn’t a full documentation for older versions unfortunately. But the configuration reference manual has older / deprecated entries documented (one has to click on the ‘show removed parameters’ at the top). For example, the old name of that config is [dc-node-address-port](https://docs.aerospike.com/reference/configuration#dc-node-address-port).
---
### Author:  [@shan.p](https://discuss.aerospike.com/u/shan.p)
#### Post date: [February 17, 2022, 11:32pm UTC](https://discuss.aerospike.com/t/where-can-i-access-reference-documentation-for-older-versions-of-aerospike/9219/3 "2022-02-17T23:32:08Z")
For anyone looking for the XDR documentation for for older versions of Aerospike (4.x), here it is - [https://docs.aerospike.com/operations/configure/cross-datacenter/xdr\_40](https://docs.aerospike.com/operations/configure/cross-datacenter/xdr_40)
---
### Author:  [@meher](https://discuss.aerospike.com/u/meher)
#### Post date: [February 17, 2022, 11:44pm UTC](https://discuss.aerospike.com/t/where-can-i-access-reference-documentation-for-older-versions-of-aerospike/9219/4 "2022-02-17T23:44:25Z")
Oh, that’s right! Thanks @shan.p !
---
### Author:  [@system](https://discuss.aerospike.com/u/system)
#### Post date: [May 12, 2022, 11:45pm UTC](https://discuss.aerospike.com/t/where-can-i-access-reference-documentation-for-older-versions-of-aerospike/9219/5 "2022-05-12T23:45:08Z")
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