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On a deployment site, an S2600 fully configured with 12 SATA disks was properly installed. However, when the field engineers went to the site the next day after the installation, they found that three member disks of a RAID group of the S2600 had become offline and the RAID group invalid.
The error symptoms are as follows:
1. The global alarm indicator was on.
2. Alarms were generated on the ISM, indicating that the hard disks were damaged or removed, and the RAID group was invalid.
The misoperation in this example is carried out during the deployment of the S2600, when no data is stored; therefore, the following methods are adopted:
Step 1 Delete the configuration information of the S2600, and then the hard disks become online automatically.
Step 2 Test the hot-plugging function of hard disks, and the status of all disks is normal.
Step 3 Recover the configuration information.
The three offline disks belonged to the same RAID group. Then a customer engineer said that after the intial configuration of the S2600, he removed a hard disk from the enclosure to test the hot-plugging function, but after he inserted the hard disk to the enclosure again, the hard disk became offline. He tested another two hard disks, and the hard disks remained offline.
The reason is that when the S2600 is configured with 12 SATA disks, it takes a while to format LUNs after the initial configuration. The customer removed a hard disk during the LUN formatting process, causing the hard disk to become offline.
|Do not remove or insert any hard disk during the LUN formatting process.|