HP Surestore Disk Array FC60 HP SureStore E Disk Array FC60 - (English) Advanc - Page 295

To replace a LUN, type: amcfg -R : -d ,..... -r • The parameters and options available when replacing a LUN are the same as those used when binding a LUN. See "Binding a LUN" on page 289. Command Examples The following example replaces existing LUN 0 on disk array 0000005EBD20. The new LUN is RAID 5, uses a stripe segment size of 16 Kbytes, and is owned by controller A. Note that each disk is in a different enclosure for high availability, and that there are no spaces between the individual disk parameters. amcfg -R A:0 -d 1:1,2:2,3:1,4:4,5:3 -r 5 -s 16 0000005EBD20 Managing Global Hot Spares Global hot spares provide an additional level of protection for the data on your disk array. A global hot spare automatically replaces a failed disk, restoring data redundancy and performance that may suffer while in degraded mode. For maximum protection against disk failure it is recommended that you add one global hot spare per channel. For more information on using global hot spares, see "Global Hot Spares" on page 248. CAUTION If you have disks of different capacities in your disk array, always select disks of the largest capacity for your global hot spares. This ensures that any disk failure is protected. See "Global Hot Spare Disks" on page 61 for more information on selecting disks for global hot spares. If a larger disk is used to replace a smaller disk that has failed, the difference in capacity will be unused. For example, if an 18-Gbyte disk is used as a global hot spare for a 9-Gbyte disk, the remaining 9 GB of the global hot spare remain unused. Managing the Disk Array on HP-UX Managing the Disk Array Using Array Manager 60 295