RedPath Group Inc. 2.4TB External RAID; 8-bay 2U Product Details
For 2005, three important new features, disk self-test, disk scrubbing, and disk cloning, became enabled with the latest firmware release.
Disk Self-Test (DST): Before the release of this function, users of RAID systems were forced to test suspected bad hard drives in a host computer individually using a drive manufacturer’s utility. This new function allows a drive’s health to be tested while still installed in the RAID array. DST performs write tests, servo analysis and read scan tests, and displays the test results on the LCD and hyper-terminal output. This helps the user to decide whether or not to replace a suspected failing hard drive.
Disk Scrubbing (DS): With today’s RAID subsystems being capable of storing multiple terabytes, it is becoming increasingly difficult to manage and maintain such a large amount of data. To help maintain the data’s health, our RAID arrays are now available with Disk Scrubbing. The data and/or parity bits stored on the hard drives can sometimes become corrupted, and can also reside in areas that are not accessed for long periods of time. DS will use idle time to test the disks, and if a sector is found to be corrupt, the data will be regenerated from other disks in the array, and will be written to an uncorrupted sector. The purpose of DS is to prevent the possibility of having multiple corrupted sectors in a single stripe, which is one of the main causes of data loss.
Disk Cloning (DC): Hard drives are the most likely component to fail in a RAID array, and almost impossible to predict when the failure will occur. When a failure does occur, the RAID unit will have to regenerate data from the non-failed drives in order to rebuild a new drive. During a drive rebuild, should another drive fail prior to completion, the array would be destroyed and all data would be lost. This is where Disk Cloning comes in. With the help of the hard drives’ built-in S.M.A.R.T. function, DC can determine when to begin cloning a bad drive to a hot spare. Upon completion of cloning, the new cloned disk can take the position of the failing disk or can stand-by until the original disk fails, and then take the failed disk’s position. Disk cloning helps eliminate data loss by preventing a rebuild from ever occurring during degraded mode.
The high-availability hardware and firmware architecture automatically detects bad sectors and failed disk drives. When installing a replacement disk, or using a drive as a hot spare, the system automatically
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Manufactured by: RedPath Group Inc.
Mfg Part No: A082U300F
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Shipping Weight: 47.0000 pound(s)
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