To avoid downtime during Check disk activity in SAP servers

Hi Everyone,
Due to errors in logical drives , often this CHKDSK activity has been carried out in SAP servers which require a downtime for carrying out this task. Could any one suggest if we can run this activity without any downtime or any alternatives/proactive measures can be done ? Please help on this.
Thank you all
Regards,
Kavitha.

> But the problem is, this activity has been carried out as a proactive measure for some errors occuring in logical drives to avoid  crashes/big problem.
The root cause of this need to be found....
>  In recent times , this activity has been done many times and some critical servers cannot be made offline for long time. Is there any way we can avoid this dowmtime for these type of servers when they carry out CHKDSK?
This is the same as trying to change tires on a car while it is driving on a highway, it's just not possible. How should an operating system repair a filesystem while the system is running and trying to read and write just from that filesystem?
Markus

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