Somethig storage

config/linux-server/proxmox-ve.md

@@ -69,7 +69,8 @@ See: [Proxmox: High Availability](https://pve.proxmox.com/wiki/High_Availability
 
 ## Ceph
 
-See: [Storage: Ceph](../storage/#ceph)
+See [Storage: Ceph](../storage/#ceph) for general notes.
+The notes below are PVE-specific.
 
 ### Notes
 

config/linux-server/storage.md

@@ -29,6 +29,9 @@ breadcrumbs:
         - 4096: Aka "Advanced Format" or "AF". Newer than 512.
         - Emulated 512: Actually 4096 but emulating 512 for compatibility reasons. Problematic when automatically selecting block size.
     - Some enterprise SSDs let you to set the physical block size.
+- Hard drives often experience performance degredation before failing completely.
+  This may lead to high latencies, reduced bandwidth and possibly read/write errors.
+  High latencies and low bandwidth is hard to detect automatically and may result in reduced performance for the whole system.
 
 ### SSDs