Radoslaw, ICKDSF can erase logical volumes, but it cannot erase the physical disk drives.
> Not only controller. Sometimes smart folks also know that. I'm not so smart, > but I can tell you what is the relationship between physical discs and logical > volumes in my array. I have it documented, and it can be checked/confirmed. > [Ron Hawkins] If you are using any of the current day wide striping or thin provisioning products from IBM, EMC and HDS then this sort of mapping will be near impossible. The closest you'll get is the array groups that make up the pool. If you are using any dynamic tiering products, or any of the logical volume movement tools then you have the added complexity of not knowing where the data has been in the past. I suggest that the only safe way to erase the physical drives is to use a technique that will explicitly overwrite the entire drive or array group. This is still problematic for SSD as they have a similar challenge to Log Structured Files. This is why for HDS products we recommend that you encrypt data at rest for all your drives from the get go - HDD, SSD, and SATA. Ron ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
