• Both ATTO Technology, Inc and Quantum Corp. have received reports of an incompatibility between ATTO ExpressSAS H380, H308, H30F, R380, R348, and R30F cards and Quantum's LTO4 HH SAS tape drives.  This incompatibility will not allow a user to use the Quantum's LTO4 HH tape drives with ATTO's 3.0 Gig ExpressSAS line of cards.  Both ATTO and Quantum have reproduced this issue. We are waiting for Quantum to resolve this, but unfortunately they have not given us a time frame. If you wish to be notified when a fix becomes available, please sign up for our notification service. Sign in and go to your account manager, then check the box displaying appropriate ExpressSAS SAS/SATA adapter.
  
  

• Mac Pro computers manufactured in 2008 introduced PCIe 2 (PCI Express version 2) in the two x16 slots. We are investigating reports of occasional performance problems when ATTO ExpressSAS adapters are installed in one of the x16 slots. Please utilize one of the two x4 slots until this issue is resolved.
  
  

• Previously, we had been instructing customers to install fan control software to speed up the cooling fans to provide additional cooling. Now, the version 1.20 driver includes a fan speed control daemon. This eliminates the need for a separate program to control fan speed.

Problems accessing tape drives attached to a UL5D in a Intel-based Mac Pro or X-Serve

• Since the release of OS 10.4.10, there have been a number of reported problems accessing tape drives with EMC Retrospect and other backup programs. These usually materialize as system freezes or backups hang. This has been reported mostly with LTO3 and Sony AIT-4 or AIT-5 tape drives, but may happen with other types also. ATTO has implemented a work around for this in the OS X SCSI driver version 4.20 or greater. This driver is available on the ATTO downloads page.

• The ATTO Celerity, ExpressPCI, ExpressSAS adapters and OS X all support units larger than 2 TB. The issue is typically caused by the Returned Inquiry Data upon boot. Apple looks at byte 2 of the returned Inquiry Data (version field) in order to determine if a device supports 16 byte CDB's. In order to support a volume larger than 2 TB, 16 byte CDB's must be supported. If Apple does not see that a device supports SPC-3 (05h in byte 2), they will not send 16 byte read capacities or 16 byte CDB's at all.
  
  Unfortunately there is nothing our host adapter can do to resolve your issue.

Java Support Resources

• Java is a computing platform that enables applications to run in almost any computer or device. Available for Windows, Macintosh, Linux and UNIX operating systems, the Java Runtime Environment (JRE) allows you to take advantage of the benefits of Java-enabled applications. Several ATTO applications are Java-enabled. As such, the JRE must be installed on your computer for these applications to run. The JRE is available for download at the Java technology web site (www.java.com). This site also provides a wealth of technical support resources to help you, if needed.