1-800-691-1991 | 9am - 8pm ET
EN

Building SAN path is taking a long time

KB ID: 1630
Product: Veeam Backup & Replication
Version: 5.X, 6.X
Published: 2012-05-23
Last Modified: 2020-08-13

Challenge

The path discovery and mount process can take a while to populate the correct path to the VMDKs.

16.05.2012 18:28:09] <26> Info           [AP] (Client) output: VixDiskLib: Trying to open disk [Datastore] VMName/VMName.vmdk using mode san.\n
[16.05.2012 18:34:41] <26> Info           [AP] (Client) output: DISKLIB-LINK  : Opened 'san://snapshot-16089[Datastore] VMName/VMName.vmdk@XXX?veeam02/XXX' (0x1e): plugin, 62914560 sectors / 30 GB.\n
[16.05.2012 18:37:01] <17> Info           [AP] (Client) output: VixDiskLib: Trying to open disk [Datastore] VMName2/VMName2.vmdk using mode san.\n
[16.05.2012 18:43:27] <17> Info           [AP] (Client) output: DISKLIB-LINK  : Opened 'san://snapshot-16091[Datastore] VMName2/VMName2.vmdk@XXX?veeam02/XXX' (0x1e): plugin, 62914560 sectors / 30 GB.\n

Cause

There's several possible causes to this behavior. Some Multipathing software can cause delays in choosing the correct path and cause it to recalculate this path. Another possible cause is latancy on the C:\ (System Partition) as it's also included in the storage discovery process. If the C:\ drive is on stored on a raid controller, having it failover to write-through instead of write-back mode can cause enough disk latency to cause the same issue.  This can occur in some instances such as raid controller battery failure or if the write-through mode is already set.

Solution

As this is an environmental issue, the first thing to do is try to isolate possible causes. Verify MTU sizes match, remove/disable Multipathing temporarily, check for latency on locals drive on the Veeam server or with SAN itself. 
KB ID: 1630
Product: Veeam Backup & Replication
Version: 5.X, 6.X
Published: 2012-05-23
Last Modified: 2020-08-13

Couldn't find what you were looking for?

Below you can submit an idea for a new knowledge base article.
Report a typo on this page:

Please select a spelling error or a typo on this page with your mouse and press CTRL + Enter to report this mistake to us. Thank you!

Spelling error in text

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Your report was sent to the responsible team. Our representative will contact you by email you provided.
We're working on it please try again later
Knowledge base content request
By submitting, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Policy.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Thank you for your interest in Veeam products!
We've sent a verification code to:
  • Incorrect verification code. Please try again.
An email with a verification code was just sent to
Didn't receive the code? Click to resend in sec
Didn't receive the code? Click to resend

ty icon

Thank you!

We have received your request and our team will reach out to you shortly.

OK

error icon

Oops! Something went wrong.

Please go back try again later.