FAQ ioSafe R4

Which share protocol is the best for MAC users with the ioSafe R4?

Mac users typically prefer AFP over CIFS due to better support for extended character sets and better resource fork handling. Some prefer CIFS due to better forced compatibility with Windows users. Performance-wise, AFP and CIFS provide excellect throughput, with AFP providing faster searches via the Finder.

Is there a way I can verify if my memory is good?

Starting with RAIDiator 3.01, there is comprehensive memory test that you can run on the ioSafe R4. To invoke it, power-down the ioSafe R4 and depress the front power button, until you see all disk LEDs blink together for the 5th time (ignore the quick flash at the beginning).

What is the maximum drive size that the ioSafe R4 supports?

The ioSafe R4 supports up to 1TB disks as of this time.

What does this light pattern mean? (LED)

ioSafe-R4-LED.pdf

How do I make Time Machine work with the ioSafe R4?

Please see the Making Time Machine work with the ioSafe R4 article on the ReadyNAS homepage.

I'm getting poor performance with my Mac. Is there anything I can do?

Try setting TCP delay_ack to 0. Default is 3, which causes handshake problems with the ioSafe R4, causing a severe performance penalty. You can set the delay_ack with the following command from the OS X terminal:

sudo sysctl -w net.inet.tcp.delayed_ack=0

If you want the setting to stick when you reboot, add the line to /etc/sysctl.conf. For reference, see:
http://julipedia.blogspot.com/2006/02/samba-performance-under-mac-os-x.html
http://mail-index.netbsd.org/tech-net/2003/01/28/0004.html

How do I access an ioSafe R4 share with a Mac?

If you will be using AFP, from the Finder, select Go - Network - My Network - AFP on Hostname. If you will be using CIFS/SMB, from the Finder, select Go - Network - Workgroup - Hostname. Another option is Go - Connect to Server - Enter server address. This can be used to connect using SMB, AFP or NFS by entering the protocol then the IP of the NAS (e.g. smb://192.168.168.168, afp://192.168.168.168, nfs://192.168.168.168/sharename).

Can I change the name of the ioSafe R4 after it has already joined an Active Directory Domain?

Yes, but you will need to rejoin the domain.

Why is RAIDar not detecting my ioSafe R4?

Check if your Mac is blocking UDP traffic. Go to System Preferences - Sharing - Firewall - Advanced. If you are, uncheck it and press OK and you should now be able to use RAIDar to find your ioSafe R4.

How well does the ioSafe R4 work in a Mac environment?

Macs are well-supported via AFP, CIFS and NFS protocols. There is an active Mac user gathering on this Forum.

After joining the ioSafe R4 to a Domain Controller, the ioSafe R4 does not list users and groups under account tab. How do I fix this?

Make sure your DNS and the ADS realm address settings are correct.

Under the Domain security mode, each time users access the ioSafe R4, it keeps asking for a login name and password. How can this be prevented?

It's likely the system clocks on the ioSafe R4 and the domain controller are not sync'd. It is recommended that a common NTP server be used to keep the clocks in sync.

Why am I not able to create users in the ioSafe R4 after joining Domain?

All account management is handled on the domain controller.

How come data copied to the ioSafe R4 does not maintain all the ACL permissions?

Windows does not preserve ACLs when dragging files over the network, regardless of whether the target is an ioSafe R4 or a Windows server. To preserve ACLs, you can use xcopy /o from the command prompt.

Can I attach a USB 2.0 Hub to the ioSafe R4 USB Port?

Yes. Bus powered hubs can cause power issues and require special attention.

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