https://community.hpe.com/t5/disk-enclosures/adding-disks-to-disk-group-in-eva4400-while-leveling/m-p/4270904#M28554 Hi,<BR />if the disk is allready ungrouped from the DG, there is no risk of the 2 disk failures, because after the ungroup the DG is healthy (and able to survive another disk failure online).<BR />You should replaced the failed disk and then group it into the DG.<BR />Leveling means redistribution of the vdisks across all physical disk in a DG and it is automatic feature of the EVA controller firmware. <BR />Ungroup/regroup and leveling operations are independent so you are free to add/group (in your case the failed disk replacement) in any time. After the group, the leveling process will start again...<BR /><BR />The spare disk capacity can be checked e.g. the Commandview and its Protection level parameter:<BR />single disk protection means 2 virtual disk spares<BR />double disk protection means 4 virtual disk spares<BR /> Wed, 17 Sep 2008 10:05:51 GMT IBaltay 2008-09-17T10:05:51Z https://community.hpe.com/t5/disk-enclosures/adding-disks-to-disk-group-in-eva4400-while-leveling/m-p/4270903#M28553 yesterday morning one of the disks in a disk-group failed and was automatically removed from the disk-group; the Reconstruction process took about 20 hours, and right now the disk-group is in Leveling<BR /><BR />can i add the spare to the disk-group now, or should i wait for this Leveling process to finish before starting another? Wed, 17 Sep 2008 09:44:49 GMT https://community.hpe.com/t5/disk-enclosures/adding-disks-to-disk-group-in-eva4400-while-leveling/m-p/4270903#M28553 iulianv 2008-09-17T09:44:49Z https://community.hpe.com/t5/disk-enclosures/adding-disks-to-disk-group-in-eva4400-while-leveling/m-p/4270904#M28554 Hi,<BR />if the disk is allready ungrouped from the DG, there is no risk of the 2 disk failures, because after the ungroup the DG is healthy (and able to survive another disk failure online).<BR />You should replaced the failed disk and then group it into the DG.<BR />Leveling means redistribution of the vdisks across all physical disk in a DG and it is automatic feature of the EVA controller firmware. <BR />Ungroup/regroup and leveling operations are independent so you are free to add/group (in your case the failed disk replacement) in any time. After the group, the leveling process will start again...<BR /><BR />The spare disk capacity can be checked e.g. the Commandview and its Protection level parameter:<BR />single disk protection means 2 virtual disk spares<BR />double disk protection means 4 virtual disk spares<BR /> Wed, 17 Sep 2008 10:05:51 GMT https://community.hpe.com/t5/disk-enclosures/adding-disks-to-disk-group-in-eva4400-while-leveling/m-p/4270904#M28554 IBaltay 2008-09-17T10:05:51Z