Galaxy Metal Gear 65 manual RAID level Number of drives you can add, To expand an array

Managing Arrays & Partitions

The number of drives you can add to an array depends upon the RAID level as shown in Table 3–2. You also cannot exceed the maximum number of drives for each RAID level. See C.1, ”Creating Arrays”, on page 105.

Table 3–2	Drive additions by RAID level
RAID level		Number of drives you can add	Maximum
			number of drives
RAID 0		1 to 4 at a time up to the maximum	16
RAID 1 (Mirrored)		Cannot expand	N/A
Volume Set		Cannot expand	N/A
RAID 10		2 or 4 at a time up to the maximum	16
RAID 3, 4, or 5		1 to 4 at a time up to the maximum	16
RAID 50		You can expand the array, one RAID 5 array at a time up to the	32
		maximum number of drives. All RAID 5 arrays must contain the
		same number of drives.

If you are expanding a multiple-partition array, you add free space at the end of the array. For more information about partitions, see C.3.1, ”Understanding Partitions”, on page 133.

Note Once you start expanding array capacity, you cannot stop it. The expand function may take an hour or more to complete, depending on the array type, array size, drive speed, and other processes running on the Galaxy 65 Subsystem.

To expand an array:

1From the System Menu, select Array Menu and press Enter. The Select Array screen displays with a list of existing arrays.

2Select the array you want and press Enter. The array menu displays.

3Select Expand Function and press Enter

.The expand menu displays.

4Select Start Expand and press Enter The Number of Drives screen displays.

127