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Zorluk: OrtaStorage Drives and RAID Array Issues

A network technician is servicing a storage server configured with a four-drive RAID 5 array. The management console alerts that Drive 1 has failed, placing the array in a degraded state. While reviewing diagnostic telemetry, the technician observes that Drive 3 is reporting a rapidly increasing count of reallocated sectors and impending failure. Which TWO of the following actions should the technician take to safely recover the storage system while protecting data integrity?

  1. Perform an immediate backup of all accessible data from the array to external storage.Cevap
  2. Replace the failed Drive 1 with a healthy disk of equal or greater capacity and initiate an array rebuild.Cevap
  3. C
    Execute a high-level format on Drive 3 to reset its S.M.A.R.T. bad sector table.
  4. D
    Reconfigure the storage volume from RAID 5 to RAID 0 to bypass parity verification overhead.

Cevap

The technician should immediately perform a full backup of all accessible data to external storage and replace the failed drive (Drive 1) with a healthy drive of equal or greater capacity to begin the array rebuild.
In a degraded RAID 5 array, fault tolerance is exhausted. Because S.M.A.R.T. diagnostics indicate that another drive is near failure, initiating an immediate data backup is vital prior to hardware maintenance, as the intensive read operations required during a rebuild could cause the second failing drive to collapse. Following data backup, replacing the failed disk with a functional drive of equal or greater capacity and rebuilding the array restores fault tolerance.

Adım Adım Çözüm

1
Assess array status and identify risk factors.
Recognize that RAID 5 can tolerate only one drive failure. With one drive offline and a second drive showing S.M.A.R.T. warning signs, the array is at high risk of total volume failure during intense I/O operations.
Array rebuilds place heavy read pressure on remaining member disks, which can trigger complete failure on a drive already exhibiting S.M.A.R.T. errors.
2
Secure critical data before performing hardware rebuilds.
Copy accessible data to external or secondary storage.
Ensures data preservation in case Drive 3 experiences total failure during the subsequent disk rebuild.
3
Hot-swap or replace the failed drive and initiate rebuild.
Install a matching or larger replacement disk for Drive 1 and allow the controller to rebuild parity.
Restores array redundancy and fault tolerance once rebuild successfully finishes.

Anahtar Kavram

RAID 5 Degraded Array Recovery and Risk Mitigation
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Konular

Storage Drives and RAID Array Issues

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