VMware
VMware resources for ESXi, vCenter, v sphere, VMDK, philanthropy, data store, shared storage, HA and vMotion
VMware Center / Virtualization
VMware Center: ESXi, vCenter, VM, VMDK, snapshots, datastores, storage, network, migrations and virtualization diagnostics
ResourceStorage / NAS / SAN Center
Storage diagnostics for RAID, SMART, NAS, SMB, NFS, iSCSI, MPIO, ZFS, LVM, capacity, latency and restore validation.
Knowledge hubHome
Free tools, procedures, diagnostics, scripts, dictionary and practical resources for IT technicians, system administrators and SMEs
IT dictionaryVMware ESXi
ESXi is VMware’s bare-metal hypervisor for running and isolating virtual machines on a physical server.
IT dictionarySnapshot Consolidation
A VMware operation that merges or cleans files from snapshot remaining.
IT dictionarySnapshot Memory VMware
A VMware memory snapshot captures guest RAM state in addition to disk state when memory capture is enabled.
IT dictionarySnapshot Chain VMware
A VMware snapshot chain links base disks and successive delta disks; long chains can affect performance and consolidation.
IT dictionaryCBT
CBT follows the modified blocks of a VMware virtual disk
IT dictionaryCPU Co-Stop VMware
a VMware vSphere metric indicating time a multiprocessor VM waits for its vCPUs to be coordinated before execution
ResourceHow to identify a VMware datastore that is filling
Identify the files and VM operations consuming datastore capacity before attempting cleanup.
ResourceHow to diagnose VMware Changed Block Tracking (CBT)
This BOAI guide provides a structured method for diagnosing vmware cbt without multiplying unnecessary changes
ResourceHow to diagnose a vMotion failure
This BOAI guide provides a structured method for diagnosing vmotion failure without multiplying unnecessary changes
ResourceHow to size usable RAID capacity
Compare raw capacity, usable capacity, fault tolerance, and smallest-disk impact before purchasing storage.
ResourceHow to check Active Directory replication
Failure to perform Active Directory can cause inconsistent GPOs, different accounts depending on DCs or errors d, authentication
ResourceHow to diagnose Event ID 129 and 153
This guide provides a structured method for diagnostics ID 129 and 153
TroubleshootingVMware asks to consolidate the kennels
vCenter indicates that a consolidation of virtual machine discs is required after either,, or replication
ResourceVMware —SK disk space on data store
The data store no longer has sufficient space for the requested operation
TroubleshootingESXi Host Disconnected from vCenter
An ESXi host can remain running virtual machines while its management connection to vCenter is lost.
TroubleshootingA VMware data store is almost full
Storage hosting VMs is approaching its maximum capacity
TroubleshootingVMware CBT must be reset
The backup signals a problem with Changed Block Speed
TroubleshootingVMware vMotion fails due to network
Hot migration cannot start or ends in error
ProcedureHandle a VMware VM with an inconsistent snapshot chain
Secure the VM and analyze descriptors when a parent of the company is missing or disabled
ProcedureSecure a nearly full VMware datastore
Procedure to avoid a failure due to saturation of a data store
ProcedureResolve a VMDK "capacity was reduced" error
Diagnosing a VMDK replication error indicating reduced capacity by comparing source, target, philosophies, descriptors and modification history before properly recreate the string if necessary
ProcedureCreate a dedicated vMotion network
Controlled procedure to create a dedicated vmotion network
ProcedureHandle a saturated Linux filesystem without risky deletion
Procedure to find the cause of a full filesystem before cleaning
ProcedureWindows Server: handle a saturated system disk
Risk reduction procedure when a Windows Server system volume lacks d,space
ResourceVMware — operating memo
VMware vSphere and ESXi checks for virtual machines, snapshots, datastores, networking, logs and safe maintenance.
ResourceNetwork ports — memo form
Common TCP and UDP ports, their services and practical checks for network administration.
ResourceBackup & VSS — Cheat sheet
Backup verification, VSS writers and providers, recovery objectives, backup chains and restore testing.
Knowledge hubBackup & Disaster Recovery
Backup, restoration and resumption of activity: Veeam, Acronis, VSS, RPO, RTO, immutability, replication and restoration tests.
Knowledge hubWindows Server
Windows Server diagnostic and administration: services, RDP, storage, VSS, Event ID, Power Shell, certificates and updates
Knowledge hubIT Networking
Tools and methods for DNS, DHCP, VLAN, routing, Wi-Fi, LINK, TITLE/IP, latency, MTU and network diagnostics
Knowledge hubProxmox VE
Proxmox VE administration and troubleshooting: nodes, QEMU VM, LXC, Cluster, Ceph containers, storage, backups, migration and network
Knowledge hubHyper-V
Hyper-V administration and troubleshooting: virtual machines, VHDX, Stewarts, vSwitch, Live Migration, replication, Failover Cluster and CSV storage
Knowledge hubStorage / NAS / SAN
Company storage: Rsid, SMART, NAS, SMB/NFS, iSCSI, MPIO, LUN, SAN, ZFS, LVM, PORTOS, capacity and performance