Add more entries and related links

Signed-off-by: Frédéric Zind <frederic.zind@vates.tech>

Author: freezed

docs/appendix/glossary.md

@@ -2,14 +2,28 @@
 
 All terms and acronyms.
 
-* dom0 : "Domain 0", or "control domain". The initial domain in Xen and XCP-ng, which has direct access to hardware and manages other virtual machines.
-* HVM : Hardware Virtual Machine
-* PBD : Physical Block Device
-* PIF : Physical Interface
-* PV : ParaVirtualization
-* SR : Storage Repository
-* VBD : Virtual Block Device
-* VDI : Virtual Disk Image
-* VM : Virtual Machine
-* XCP-ng : XCP New Generation
-* XCP : Xen Cloud Platform
+* CoW: [Copy-on-write](https://en.wikipedia.org/wiki/Copy-on-write)
+* Dom0: Abbreviation for "[domain 0](https://wiki.xenproject.org/wiki/Dom0)"
+* DomU: Abbreviation for "[unprivileged domain](https://wiki.xenproject.org/wiki/DomU)" (no access to the hardware)
+* DRBD: [Distributed Replicated Block Device](/xostor/#drdb)
+* HVM: [Hardware Virtual Machine](https://wiki.xenproject.org/wiki/Understanding_the_Virtualization_Spectrum#Xen_Project_and_Full_Virtualization)
+* LUN: [Logical Unit Number](https://en.wikipedia.org/wiki/Logical_unit_number)
+* LVM: [Logical Volume Manager](https://en.wikipedia.org/wiki/Logical_Volume_Manager_(Linux)) ([manpage]([](https://www.man7.org/linux/man-pages/man8/lvm.8.html#DESCRIPTION)))
+* NBD: [Network Block Device](https://en.wikipedia.org/wiki/Network_block_device) ([official doc](https://github.com/NetworkBlockDevice/nbd/blob/master/doc/proto.md))
+* PBD: [Physical Block Device](/storage/#-how-to-modify-an-existing-sr-connection)
+* PIF: [Physical Interface](/project/architecture/#pifs)
+* PV: [Para-Virtualization](https://wiki.xenproject.org/wiki/Paravirtualization_(PV))
+* RPU: [Rolling Pool Update](/management/updates/#from-xen-orchestra)
+* SMAPI: [Storage Manager API](https://github.com/xapi-project/xapi-storage)
+* SR: [Storage Repository](/storage/)
+* VBD: [Virtual Block Device](https://docs.kernel.org/block/ublk.html)
+* VDI: Oracle's _VirtualBox Disk Image_ format
+* VG:  [LVM's Volume Group](https://www.man7.org/linux/man-pages/man8/lvm.8.html#DESCRIPTION)
+* VHD: [_Virtual Hard Disk_ file format](https://en.wikipedia.org/wiki/VHD_(file_format)) ([specification](https://www.microsoft.com/en-us/download/details.aspx?id=23850))
+* VMDK: [_Virtual Machine Disk_ file format](https://en.wikipedia.org/wiki/VMDK) ([specification](https://github.com/libyal/libvmdk/blob/main/documentation/VMWare%20Virtual%20Disk%20Format%20(VMDK).asciidoc))
+* VM: [Virtual Machine](https://en.wikipedia.org/wiki/Virtual_machine)
+* XAPI: [Xen Project Management API](/management/manage-at-scale/xo-api/)
+* XCP-ng: [XCP New Generation](https://xcp-ng.org/)
+* XCP: [Xen Cloud Platform](https://wiki.xenproject.org/wiki/XCP_Overview) (legacy Citrix project)
+* XOA: [Xen Orchestra Appliance](/management/manage-at-scale/xo-web-ui/)
+* XOSTOR: [Hyper-convergence solution based on DRBD](/xostor/)