Spectra Logic Spectra nTier300, Руководство по установке

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4
Maintenance
This chapter describes how to replace a data drive in the Spectra nTier300 VTL.
Replacing a Data Drive
If one or more data drives in the nTier are not functioning properly, the Drives tab on
the Overview page of the BlueScale web interface is red, indicating an error condition.
Although the RAID 6 volume in the blade can continue to operate with one or two
malfunctioning drives, you run the risk of data loss if a third drive fails. Replace a
malfunctioning drive as soon as possible to avoid degraded performance.
Preparing for Replacement
Spectra Logic recommends that you back up your nTier300 VTL configuration before
replacing a data drive. Refer to the
Implementing nTier Deduplication guide for
instructions.
Estimated Time Required
Replacing a data drive takes about ten minutes. This procedure can be performed
without interrupting the operation of the nTier300 VTL. As soon as you install the new
drive, it automatically powers on and the RAID-6 volume to which the drive belongs is
rebuilt using the parity data stored on the remaining drives in the volume.
Note:
Rebuilding the RAID-6 volume may take up to 28 hours. During
this time, the throughput of data to the RAID volume is reduced
until rebuild is complete and the drives are resynchronized.
Prepare the Work Area
Ensure that the environment is free of conditions that could cause electrostatic
discharge (ESD)—
If possible, use an antistatic mat and a grounded static protection
wristband during installation. If a mat and wristband are not available, touch a known
grounded surface, such as the nTier300 VTL’s metal chassis.