CRU DataPAK - Manual (Page 21)

DataPAK - Manual
Page 21
CRU DataPort PDR610-IR
Quick Start Guide
Drives connected to the computer via eSATA cannot be ejected in Windows the way
FireWire drives can. However, freeware utilities are available on the internet that provide
a similar function.
Q: What is an acceptable temperature for my hard drives and DataPAK?
A: You hard drives can run between 30-40° Celsius without any risk of overheating. The
DataPAK should trigger the fans to operate when the enclosure reaches 36° Celsius, so
ideal temperatures should also range from 30-40° Celsius.Q: Why does my eSATA device
appear as a Parallel SCSI device in System Profiler?
A: The “Serial ATA” tab in System Profile shows devices attached to the internal SATA
bus, but not always devices attached to an eSATA host card. Sometimes these devices
will appear under the heading “Parallel SCSI” instead. This is entirely normal and does not
indicate a problem with the device or its drivers.
Q: What is the difference between recoverable and persistent errors?
A: Recoverable Errors (aka Transient Error or Disk Error) represent minute errors that the
RAID system encounters during data transfers. These errors are common for RAID setups
and are not necessarily indicative of a drive failure. It is normal for any given disk in a
RAID array to occasionally encounter and report these errors, but a string of these errors
may indicate the upcoming failure of that particular disk.
Persistent Errors (aka Hard Error or Disk Failure) represent the major errors that can affect
a drive and cause it to be removed from the RAID array. This can be caused by electrical
removal (e.g. drive is physically disconnected from the controller, drive suffers electrical
failure, drive loses power, etc.) or by a failure to respond (e.g. the given disk no longer
responds to commands given by the controller). In either case, the result is a degraded
RAID set and a failed disk.