Research Data Storage Documentation

Known Issues (esp. OS-X)

This page contains some computing terminology which may not familiar to some users. If you require further explanation please contact your Faculty IT team.

OS-X: Mounting RDS Shares by Using The Finder

10.9 (Mavericks): No known problems.

10.7 and 10.8 (Lion and Mountain Lion): Finder alone is not suitable for mounting and accessing your RDS share as there is an issue affecting navigation to a share mounted via Go to Server. (Note: This problem does not affect P drives on Isilon). We recommend the use of a script — for details, see the section on Using Storage.

10.6 (Snow Leopard): In the Go menu select Connect to Server. In Server Address, enter the path to your share. For details see the section on Using Storage.

OS-X: I cannot save opened/edited files back to Isilon!

There appears to be a bug in some versions of MS Office for OS-X which manifests itself on some versions of OS-X. The only known workaround is to save files locally from Office and then copy them to Isilon later.

OS-X: I cannot see the folder structure on Isilon!

This appears to be a bug in the finder on some versions of OS-X. A work around is to mount your share via the command line, as described above for OS-X 10.7 and 10.8.

OS-X: Where are my snapshots?

In some versions of finder file-recovery snapshots are not visible.
The work around is to use the commandline.

OS-X: Why are download speeds from my CIFS share so slow on my Mac?

With 10.8 (OS-X Mountain Lion), 10.7 (Lion) and 10.6 (Snow Leopard), poor download performance over SMB/CIFS is well known. The cause is an unfortunate choice of TCP stack configuration: TCP Delayed Acknowledgement is set to three (auto detect) which does not, apparently, work. Changing this value to two on your Mac yields much better performance.

To make this change — permanently — on your Mac add this line


to the file /etc/sysctl.conf and reboot.

32-bit Applications Cannot Access Isilon Files on the CSF

Most applications on the CSF are 64-bit; all applications compiled from source code are 64-bit. A small number of those applications installed as binaries are 32-bit. These applications cannot access files stored in directories which are located on Isilon.

The problem manifests itself through error messages such as cannot find file.

Files which are to be accessed by 32-bit applications must be stored in directories which are located elsewhere. For help with this issue, please contact

Last modified on May 17, 2016 at 7:33 am by riwpadmin