raid-devices=2 specifies how many disks (devices) are going to be used in the creation of the new RAID device.

raid-devices=2 指定创建新的RAID设备会用到多少磁盘（设备）。

youdao

The national anti-terrorism committee says special forces killed 2 militants and detainees and detained rather a third person during a raid in a town on the outskirts of Moscow.

俄罗斯国家反恐委员会表示，特种部队在莫斯科郊区进行围捕行动，两名武装分子死亡，一人被拘留。

youdao

During the raid, 2 Army Rangers were killed. The Filipino Guerillas suffered 21 Casualties. One POW died after being liberated from the Camp.

行动过程中两名突击队员阵亡，菲律宾游击队21名队员阵亡，一名战俘在被解救后死去。

youdao

All three wives and eight of his children were taken into Pakistani custody after the May 2 raid by U.S. commandos that killed bin Laden, the leader of the al Qaeda terrorist movement.

CNN: U.S. granted access to speak to bin Laden's wives

He shelved the B-2 option and directed McRaven to start rehearsing the raid.

NEWYORKER: Getting Bin Laden

The U.S. military said it killed the Sunni militant group's No. 2 leader, Abu Qaswarah, in a raid in the northern city earlier this month.

CNN: Thousands of Christians flee Iraq city