showing posts tagged with 'dell'
by lunarg on August 4th 2016, at 17:25
Backup of a SQL Server may fail with a VSS error.

From the log, the following message can be found:

One or more errors occurred. ---> Replay.Core.Contracts.Transfer.VssGeneralErrorException: There was a problem with the VSS subsystem on '(agent-machine)l'. ---> Replay.Agent.Contracts.ShadowCopy.ShadowCopyWriterFailedException: The VSS writer 'SqlServerWriter' failed during the 'DoSnapshotSet' phase with error WriterErrorNonRetryable. The VSS writer state is FailedAtPrepareSnapshot ---> Replay.Common.Contracts.ReplayException

In the Application event log on the machine, event 8229 is logged:

Event 8229
A VSS writer has rejected an event with error 0x800423f4, The writer experienc  ...
by lunarg on June 21st 2016, at 15:47
For some reason, if an upgrade of an AppAssure/Dell Rapid Recovery Agent is not succesfully completed or cancelled, a subsequent upgrade may fail with the following error message:

Destination path is not empty. Please choose another one.

If an upgrade was cancelled or has failed for some reason, the following upgrade attempt will try to perform a complete installation. Because not all files and/or folders have been removed, the installer will not continue and will display the error message.

To resolve the problem, manually remove the files and folders, but leave any registry keys intact to ensure a proper upgrade without losing any settings.

If it is running, stop the Agent or Core  ...
by lunarg on June 20th 2016, at 15:13
Dell has changed the name of its acquired AppAssure to Dell Data Protection Rapid Recovery. AppAssure (latest version is 5.4.3) is no longer being maintained, so upgrading to Rapid Recovery (latest version 6.0.2 at the time of writing) is a requirement for continued support. Fortunately, performing the upgrading is not really difficult, and can be done without too much downtime for your backup.

Additional information, including a compatibility and upgrade matrix can be found here:

How to Upgrade AppAssure 5.4 to Rapid Recovery 6.X (181997)

Dell Support Policy (compatibility matrix for Core and Agent versions)

At the time of writing, the compatibility matrix shows that Agent version 5.4.3  ...
by lunarg on May 18th 2016, at 16:09
You can add a secondary IP address on any interface (e.g.) without using VLAN tagging. This is useful if you have more than one subnet on your LAN, have no VLANs but want both subnets to be routable, without using an additional physical interface.

Create a static ARP entry for the gateway address of the additional subnet on the interface. Select the interface on which the subnet will be on. Enable Publish ARP. This will also automatically fill in the MAC address of the selected interface.

Create an address object for the additional subnet.

Add a static route for the additional subnet:Source: ANY

Destination: the address object you created in the previous step.

Service: ANY

Gateway: 0.0  ...
by lunarg on April 22nd 2016, at 11:16

When upgrading Dell Force10 switches, keep in mind that starting from FTOS version 9.10, MTU per port can no longer be set to 12000. It is now limited to a maximum of 9216, making it the same maximum as the DNOS (Dell Networking) firmware. After the firmware update, the MTU of each port will automatically be adjusted.

For jumbo frames, this doesn't really change anything. An MTU 9216 on the switch still results in a datagram MTU of 9000, sufficient for e.g. Equallogic storage.

by lunarg on April 8th 2016, at 17:08
Version 8 of the Equallogic PS firmware introduces a default policy for automatic snapshot creation. This means that by default, a daily snapshot will be created for each volume present in the group. The policy also states to keep 2 snapshots, which can be very space consuming, quickly filling up your Equallogic.

When upgrading the firmware to version 8 from an earlier version, this policy will automatically be created and activated, without telling you, causing headaches among those unaware of this change.

From the CLI, you can check whether the default policy is active:

grpparams default-snapshot-sched show

To turn off this policy from the CLI, type this:

grpparams default-snapshot-  ...
by lunarg on March 17th 2016, at 09:34
Aside from pulling power cables from a Dell server or blade, there are some other ways to (soft-)reset a frozen iDRAC.

Each rack server has an i-Button on the front panel of the server. To soft-reset iDRAC, hold down this button for 20 seconds.

If you still can log on using SSH, you can also reset it that way, saving you a trip to the server room. See the last part of this article to see how to do this.

To reset the iDRAC on a blade, you can log in on the CMC to do so.

From Chassis Overview, click Troubleshooting, then click on Reset Components (the third item in the submenu, next to Diagnostics).

If you cannot log in using the web interface but still have access to the unit through SSH  ...
by lunarg on November 7th 2015, at 15:43
To enable SSH on Dell Networking N-series (formerly known as Dell PowerConnect), you first have to generate the required private RSA and DSA keys. If you don't, you're met with a very secretive error message:

SSH could not be enabled.

To generate the keys, and configure and enable SSH, log on to the switch using the console cable or log on through Telnet:

Go into EXEC mode, then in CONFIG mode:


Generate both the RSA and DSA keys:

crypto key generate rsacrypto key generate dsa

Now, you can enable the SSH server:

ip ssh server

Optionally: you can also change the protocol and/or default listen port:

ip ssh protocol 2ip ssh port 22

Optionally: after enabling SSH, you c  ...
by lunarg on April 28th 2015, at 15:24
This article is a quick reminder (for myself) on how to properly configure port forwarding on a Dell Sonicwall firewall.

First, create the address and services objects you need for the port forwarding. In case of multiple addresses or services, create a group and add all objects in that group.

Address object for a local server

Service group with multiple services

Predefined objects, such as the WAN IP are already present and do not have to be created again. Also, the advantage of using these predefined objects is that they are dynamic: e.g. if the WAN IP changes, the policies and rules that use this object will not have to be changed.

Once the objects are in place, they can be refer  ...
by lunarg on April 20th 2015, at 15:41

You can disable the page prompt "--More or (q)uit--" by entering the following command at the console:

terminal length 0

This disables the prompt, and allows you to do config dumps, or run show tech-support.

If you get an error about unrecognized command, your firmware is too old.

by lunarg on April 17th 2015, at 15:07

Dell Networking switches introduce a new port mode called switchport general. This type is a multi-purpose mode, combining access and trunk in one.

Access mode

The following gets written as:

switchport mode access
switchport access vlan 99
switchport mode general
switchport general allowed vlan add 99 untagged
switchport general pvid 99

Trunk mode

The following gets written as:

switchport mode trunk
switchport trunk allowed vlan add 99,100
switchport mode general
switchport general allowed vlan add 99,110 tagged
switchport general pvid 4095         (this is is the drop vlan)
by lunarg on February 3rd 2015, at 10:24

Last year, around May, has changed their root certificates, causing Dynamic DNS using no longer to work properly. The error (Network Error) is displayed immediately after adding the account to your Sonicwall.

The easiest solution is to upgrade to the latest firmware:

  • For 5.8, this is at least;
  • For 5.9, this is anything after June 2014.

Dell Support also offers an alternative, although this only works with more recent 5.9 versions:

by lunarg on October 13th 2014, at 12:46
Installing a firmware upgrade on your Dell Force10 MXL IOM works similar (but slightly differently) than the other Force10 series. There are two things to upgrade: the IOM firmware and IOM operating system. The first has to be upgraded through CMC (not documented here), the second through the switch itself.

To upgrade FTOS, you need console access (can be SSH/Telnet) to the switch and an SCP/FTP/TFTP server.

If you have none of these, you can download tftp32/64. This is a light-weight TFTP-server which does not need to be installed and can be run as an application on any networked computer. Place the downloaded firmware (the BIN-file) in the same location as the tftp32/64 executable and st  ...
by lunarg on June 18th 2014, at 13:50
Configuring NTP for time synchronization on Dell PowerConnect switches is similar to that of Cisco iOS, but with the syntax being a little different.

You need privileged console/SSH/telnet access for this to work.

SW#configureSW(config)#sntp unicast client enableSW(config)#sntp server ip-addressSW(config)#no sntp authenticateSW(config)#end

This will set the NTP server's address to whatever you specify (replace ip-address). To verify, you can run these:

show sntp configuration

This will show you the current NTP settings and status:

SW# show sntp configuration

Time zone configuration was missing for a long time, and was only introduced in more recent firmwares. Check on the Dell website  ...
by lunarg on December 16th 2013, at 16:06

Before installing ROK licenses on your virtual machines on VMware, be sure to allow SMBios reflection of the host to the VM's. Otherwise, authorization will fail with a This system is unsupported message.

To do this, go to the settings of your newly created VM. Click the tab Configuration, then click General, then the button Configuration Parameters. Add a new row:

SMBIOS.reflectHost = TRUE

by lunarg on August 22nd 2013, at 15:53

A note about installing the drivers for the Dell PowerVault TL2000/4000 on a Windows 2012 machine.

You can download the firmware from the Dell Support website. After extracting the package, do not install the driver using Device Manager. Doing so will not properly install the drivers (results in error code 37). Instead, install them using the included executable (install_nonexclusive.exe). Running this (elevated) will install the drivers the proper way, and the devices will start correctly.

showing posts tagged with 'dell'
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