If you dont have any user LUNs created on these vault drives (first five disks), you can simply pull out the faulty drive and insert new one.  I would recommend only replacing with a new drive.
Hello,  We have an old CX700 disk array, which is today unsupported, and we would re-use it to store non critical data.  I just discovered that there is one of the 5 first disks, the ones where the "Array software" is located.  As I'm a newbie on EMC usage and we have not an EMC support I would know if someone can say me how to proceed for replacing this faulty disk ?  Note that we have a lot of unused disks in the enclosures, also I can easily pick one of them to replace the faulty.  Can I just unplug it and replace it by another one (physically) ?  Is it another and safer way to proceed ? Maybe setting a hot spare and forcing this hot spare to replace the faulty disk in the Raid 5 group ?  Any help will be appreciated.  Regards  J.Pierre
Clariion CX700, How to replace a faulty system disk ?