Technical data

Customer Replaceable Parts
Smart-1 Hardware Page 36
Removing a Hard Drive
Any single hard disk can be safely removed without risking the integrity of the RAID array or compromising
the data.
The hard disk drives are numbered 1-4 on Smart-1 50 from left to right, and 1-12 on Smart-1 150 from left to
right, top to bottom. The upper left hard drive is #1, upper right hard drive is #4. On Smart-1 150 the lower
right hard drive is #12.
Warning - When removing more than one hard drive, please DO
NOT REMOVE both of the hard drives in the following pairs in order
to maintain your RAID array integrity :
 In Smart-1 50, hard drives 1+2 or 3+4 should not be removed
together.
 In Smart-1 150, also hard drives 5+6, 7+8, 9+10, or 11+12.
For example, you may replace hard disk drives 1+3 or disks 2+4.
To remove a hard disk drive:
1. Unlock the drive.
2. Slide the release latch toward the left.
3. Remove the drive from its slot.
Installing a Hard Disk Drive
To install a hard disk drive:
1. Slide the replacement hard disk drive into the slot.
2. Push the extraction handle until it closes and the drive clicks into place.
3. If the command raidconfig status shows that the new hard disk drive is not rebuilding, run the
command raidconfig rebuild to initiate the rebuild of the RAID array on the new disk drive.
Smart-1 150 Raid Storage
Smart-1 150 can contain up to 12 hard drives. If the appliance has been purchased with less than 12 hard
drives and you would like to add more storage capacity, follow the guidelines and instructions below.
RAID Storage Guidelines
 Additional hard drives should always be added in multiples of four - the appliance should always contain
4, 8 or 12 hard drives.
 For each group of 4 hard drives, the RAID controller creates a separate RAID 10 array. The initial setup
is 4 hard drives configured in one RAID 10 array.
 When four additional hard drives are inserted, one additional RAID 10 array built of four hard drives will
be added.
 When eight additional hard drives are inserted, two additional RAID 10 arrays, each built of four hard
drives will be added.
 When less than four additional hard drives are inserted, storage will not be extended.
 When more than four but less than eight additional hard drives are inserted, storage will be extended
using only four drives, i.e. only one additional four-hard-drive RAID 10 array will be added.
 Additional storage is always added to the /dev/vg_splat/lv_log logical volume.
Extending Appliance Storage
1. Disconnect the power from the appliance.
2. Insert the additional hard drives into the appliance according to the guidelines above.
3. Power on the appliance.
4. Wait for the boot process to finish.