Exchange database may dismount after reboot if the logs were not committed to the database, low storage, corrupt logs or database, etc. In such a case, the database enters Dirty Shutdown state and displays error when you try to mount it. Learn how to resolve issue with your Exchange database and mount it. Also, learn […]
Migrating Your Application to Cloud: Boons and Banes
The migration of business processes and applications to the Cloud is a global trend. The business gradually, completely, or partially abandons the storage of important data on its own equipment and transfers it to Cloud providers. The world’s largest virtual platforms belong to IT giants: Amazon, Microsoft, Google, Huawei. These companies guarantee customers a high […]
Advanced Disk Parameters: the unofficial diagram
Advanced Disk Parameters: the unofficial diagram This is a guest post by Andy Grant. When it comes to understanding complex topics, I find it useful to create a diagram of the concept or system in question. The creative process aids in my understanding and provides a means for discussion and review. In an attempt to wrap […]
Home Lab Gear: Cisco SG300-10 Layer 3 switch gets even better
Home Lab Gear: Cisco SG300-10 Layer 3 switch gets even better This is a guest post by Andy Grant. Vladan has previously covered this great little SMB switch from Cisco in his post My homelab – The Network design with Cisco SG 300 – a Layer 3 switch for €199. Cisco has just released the long […]
PXE Manager Howto: Converting ESX hosts to ESXi
PXE Manager Howto: Converting ESX hosts to ESXi This is a guest post by Andy Grant. PXE Manager was updated last week offering a new feature: ESX to ESXi conversion. With VMware’s push to replace classic ESX with ESXi this feature comes at a good time. Prior to any migration, it is highly recommended to review […]
Using the VMware Guest Console fling in the lab.
Virtual Guest Console Fling. This is a guest post by Andy Grant. The VMware Guest Console was released well over a year ago but never caught my interest until working in my home lab Tuesday night of last week. As a VMware admin or consultant you may or may not be responsible for making large […]
SIOC and Adaptive Queue Depth testing on iSCSI LUNs
SIOC and Adaptive Queue Depth testing on iSCSI LUNs This is a guest post by Andy Grant. This is a continuation of the post Some Answers About Queues: LUN and HBA Queue Depth on ESX(i) Hosts. Questions arose about conflicting support statements for Storage IO Control and in an effort to further the investigation, I have performed […]
Some Answers About Queues: LUN and HBA Queue Depth on ESX(i) Hosts
LUN and HBA Queue Depth on ESX(i) Hosts. This is a guest post by Andy Grant. This article is in response to the post More Questions About Queues: LUN and HBA Queue Depth on ESX(i) Hosts. I previously posed a few questions about the behavior of vSphere’s SIOC and (LUN) Adaptive Queue Depth algorithm and […]
More Questions About Queues: LUN and HBA Queue Depth on ESX(i) Hosts
LUN and HBA Queue Depth on ESX(i) Hosts This is a guest post by Andy Grant. Jason Boche has posted an interesting article on the VMkernel parameter Disk.SchedNumReqOutstanding. I confess that I have never thought much about the setting other than following VMware’s recommendation when changing HBA queue depth. Changing the Queue Depth for QLogic […]
Update to PXE Manager for vCenter Fling
Update to PXE Manager for vCenter Fling This is a guest post by Andy Grant. Max Daneri has released version 4.1 Update 1 of PXE Manager for vCenter. Be sure to uninstall the old version including the client plugin prior to installing the update. For all changes see the changelog. A new feature that caught […]