The only way to "format" the disk for use is to turn off RAID, ignore the scary message about data loss when switching, boot to CTRL-A, SCSI Disk Utilities, and Format.  However, this is usually unnecessary, and is usually only used in specific circumstances ... the disk is not fully formatted when rebuilt, but the rebuild will gladly overwrite anything on the disk.  I would run diagnostics on the drive ... if it fails, replace it; if it passes, then rebuild.
Hy, i have power edge 2850 an conroller perc 4e/di. in raid 1 array i have two phisical drive online, but one of this has device error= media error 32. i would be format this drive but in raid configuration utility i don't see format field under object-->phisical drive. i must be set drive in offline and i woould see format field??   thanks
how to fornat phisical drive on perc 4e/di