![\"\"](\"http:\/\/tech-no.104.210.61.21.xip.io\/wp-content\/uploads\/sites\/4\/2011\/03\/Windowslogo.jpg\" "\\"Windowslogo\\"")
<\/a><\/p>\nThe host servers have modest (read 160gb) Partitions for the DOM0 partition.\u00a0 I found that VSS in the default setting when disabled in set to “UNBOUNDED” and applications that use VSS, such as ONTAP and Netbackup may create temporary files that need to be cleaned up , and ultimately, you should set the maxsize parameter with vssadmin to avoid this issue altogether.<\/p>\n
<\/p>\n
Start with a command prompt in administrator mode<\/p>\n
next run this command to see where your VSS usage is at the moment:<\/p>\n
<\/p>\n the output should look something like this<\/p>\n If the last line shows “Maximum Shadow Copy Storage space: UNBOUNDED (100%) ” Then your application that is listed as a provider or writer for VSS can and will consume quite a bit of disk space. I found articles from Microsoft that made similar recommendations on the 15% value.<\/p>\n <\/p>\n Here is an example of the command you would use to re-size the Unbounded ShadowStorage to a percentage of drive space (this is the recommendation from Symantec for the Netbackup product)<\/p>\n <\/p>\n Obviously you can find what drive letter to insert after the \/for= by looking at the output from the list shadowstorage command.<\/p>\n <\/p>\n And if you are a Netbackup customer, do not set the size lower than 15% as your backups may fail.<\/p>\n <\/p>\n The official recommendation seems to come from Microsoft (10%) but i had to increase the size of the shadow storage to avoid “Status Code 156” errors on backup. Other issues may arise from insufficient shadowstorage space such as “Network Read Error”.<\/p>\n Here is a link to Symantec’s KB on the issue<\/p>\n\"vssadmin list shadowstorage<\/code>”<\/p>\nC:\\>vssadmin list shadowstorage\r\nvssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool\r\n(C) Copyright 2001-2005 Microsoft Corp.\r\n\r\nShadow Copy Storage association\r\n For volume: (C:)\\\\?\\Volume{1f579c24-a50d-11dd-83df-xxxxxxxxxxxxx}\\\r\n Shadow Copy Storage volume: (C:)\\\\?\\Volume{1f579c24-a50d-11dd-83df-xxxxxxxxxxxxx}\\\r\n Used Shadow Copy Storage space: 47.256 GB\r\n Allocated Shadow Copy Storage space: 49.405 GB\r\n Maximum Shadow Copy Storage space: 50 GB<\/pre>\nvssadmin resize ShadowStorage \/for=C: \/on=C: \/maxsize=15%<\/pre>\n