EMC VMAX – Disk Group & Pool Expansion
In order to expand a VMAX Thin Pool we must first create the additional Data Devices (TDATs) on the underlying physical Disk Group. This example outlines how to calculate and […]
EMC XtremIO Shutdown Procedure
The below steps outline how to perform a clean shutdown of an XtremIO array and thus help prevent any case of data corruption or loss. Before proceeding with the shutdown […]
EMC XtremIO – Setting Disk.SchedNumReqOutstanding On vSphere 5.5 & 6.0 (PowerCLI)
PowerCLI Download Disk.SchedNumReqOutstanding (DSNRO) – Determines the maximum number of active storage commands (I/Os) allowed at any given time at the VMkernel. The default value is 32 and the maximum value is 256. For XtremIO storage with VMware vSphere it is recommended to set the DSNRO parameter to the maximum value of 256. When using vSphere 5.5 the Disk.SchedNumReqOutstanding parameter […]
VMware PowerCLI – Adding VMFS Datastore’s
Thank you Cliff, Steve and Luc for helping me out with this task. After you have created the required LUN’s on your storage array and mapped the LUN’s to your ESXi hosts, at this stage you may use PowerCLI to add these new LUNs as VMFS datastore’s. 1. Connect to vCenter: Connect-VIServer -Server “vcenter_IP” -User UserName -Password Password If you […]
Cisco MDS – Clear All Zoning Configuration
The steps below detail the process of clearing all zoning configurations on an MDS switch. Including: fcaliases, zonesets and zones. If you wish to remove individual zones from a zoneset then please see post here: How To Remove Zones from an Active Zoneset Note: Ensure this is a standalone switch; if it is connected to other switches in the fabric […]
XtremIO (xmcli) – Creating Initiator Groups and Mapping LUNs
1. Open an SSH session to the XtremIO Management Station Firstly we need to open an SSH connection to the XtremIO Management Station (XMS), in this case I used putty […]
CISCO UCS Blades – Memory Troubleshooting
This is a guest blog post kindly contributed by Eric Daly @daly_eric. In an effort to pin point specific DIMMs within UCS that are throwing an error, please follow these […]
EMC XtremIO Redefined
Since XtremIO first became Generally Available back in November 2013 the momentum of the product has been incredible. Becoming the ‘Number 1’ All Flash Array (AFA) on the market in […]
EMC VMAX – Next Generation VMAX³ (Everest)
The overall theme of the Mega Launch IV is “Redefine Possible” – What EMC focused on in the new VMAX³ (“to the power of 3”) was the agility and scale […]
Cisco UCS – Reinitialize FC Port Channel
Fabric Interconnect CLI: By connecting directly to the fabric interconnect you can quickly issue the following commands to Reinitialize (Disable&Enable) the specified FC Port Channel. Often this is required when […]
EMC VNXe – Troubleshooting NFS Connectivity
Step1 Check the Health status of the Link Aggregation: uemcli -d 10.0.0.1 -u Local/admin -p Password123# /net/la show -detail 1: ID = la0_SPA SP = SPA Ports = eth2_SPA,eth3_SPA Health state = OK (5) 2: ID = la0_SPB SP = SPB Ports = eth2_SPB,eth3_SPB Health state = OK (5) Step2 Ensure the Network Interface for NFS is correctly configured: uemcli […]
EMC VMAX – Notes On Setting FA Port Flags For VMware
When configuring a VMAX for ‘VMware ESX’ connectivity, I will always firstly consult the ‘EMC Simple Support Matrix – EMC Symmetrix VMAX Series Director Bit Settings’ found here for the […]
VMware: Enable Crisp Mouse Control on WIN2K8R2 & WIN7
If you feel like the mouse movement within the direct console of a Window 2008R2 or Windows7 Vitual machine is sluggish then the chances are you are using the SVGA […]
EMC VNX Control Station – Dart Install Error: A valid partition exists on lun 0
Encountered the following error while completing a Fresh Install of Inyo File (Dart) on a VNX VG8 with code level 7.1 (Also experienced the same issue with another system running […]
EMC VMAX – SE7600 Bug: Not enough pool space to allocate the thin device(s)
There is a known bug with Solutions Enabler 7.6.0 which returns an error while attempting to create 2048GB TDEV Meta Volumes using SYMCLI on a SYMMETRIX VMAX 40K running Enginuity […]
EMC VNX – MCx Hot Sparing Considerations
MCx has brought changes to the way Hot Sparing works in a VNX Array. Permanent Sparing is now the method used when a drive fails. How Permanent Sparing works: when […]
EMC XtremIO – Welcome to Vblock
Vblock Specialized System for Extreme Applications This Vblock as the name suggests is VCE’s solution targeted at Extreme Applications such as VDI and High performance database applications. Using the XtremIO […]
Cisco UCS – How to Query UCS for WWN’s Associated with Blades
These are very useful trick’s in order to obtain a list of WWN’s associated with the blades in a UCS environment. Instead of trawling through the GUI you can easily […]
Removing PowerPath/VE From vSphere Host(s) using ESXCLI/PowerCLI
In the event you have a requirement to uninstall PowerPath/VE from a vSphere host. The first series of steps outline how to remove PP/VE from a single host. If you […]
Cisco MDS – How To Remove Zones from an Active Zoneset
1. Firstly we need to know the specific names of the Zones that we intend to delete. To gather the full list of zone members within a Zoneset run show […]
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