HP Surestore Disk Array FC60 HP SureStore E Disk Array FC60 - (English) Advanc - Page 292
Identifying Disks, Calculating LUN Capacity, amdsp -d <ArrayID>, s <stripe> <ArrayID>
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Identifying Disks Binding a LUN requires the use of unassigned disks. If you are not sure which disks are unassigned, you can determine which disks are available. To identify unassigned disks, type amdsp -d The status of all disks in the array will be returned. The information includes the disk group the disk is a member of. Disks in the Unassigned disk group can be used for binding a LUN. You may want to print the information or write down the unassigned disks before you begin binding the LUN. Calculating LUN Capacity Before actually binding a LUN, you may want to calculate how much capacity will be available for a given set of configuration values. This command does not bind a LUN; it simply returns the capacity that would be available if you had bound a LUN using the values provided. You can alter the settings to see how LUN capacity is affected until you get the desired results. Using this command before you bind a LUN will ensure that you achieve the correct capacity. To calculate the capacity of a LUN, type: amcfg -C -d channel:ID,channel:ID... -r -s • RAIDlevel - the RAID level used for the LUN. Valid RAID levels are 1, 0/1, and 5. • stripe - the size of the stripe element in Kbytes. Command Example The following example calculates the capacity of a RAID 5 LUN using four disks and a stripe element size of 16 Kbytes. amcfg -C -d 1:1,2:3,3:1,4:2 -r 5 -s 16 0000005EBD20 292 Managing the Disk Array Using Array Manager 60