Lost Folder on Windows 2000 AS Cluster after Reboot

We have an IBM NAS300G with Dual Gateways running Windows 2000 AS. We wanted to shift the rack from one room to the adjacent room. Shutdown both the NAS Appliaces and moved the rack. After Rebooting one of the shares were not Online. The share was defined on Drive x:\test and the share name is test. Interestingly the folder x:\test is not visible.
However the drive x is showing used capacity as 600GB. No other files are visible on the drive, except snapshot folder. Can any one has an idea what could hv happened and the possivble remedy???