User manual

16
Promise Technologies Pegasus J4User Manual
create a concatenated diSk Set
A concatenated RAID set (also called “Just a Bunch of Disks” or JBOD).
1. Open Disk Utility, in the Utilities folder.
2. Select one of the disks that you want in the set, and then click RAID.
3. Click Add (+), and type a name for the RAID set.
4. Choose a format from the Format pop-up menu. Usually you’ll choose the Mac OS Extended (Journaled) format.
5. Choose Concatenated Disk Set from the RAID Type pop-up menu.
6. Drag the disks you want to add to the set to the list on the right.
7. Click Create.
create a Striped raid Set
AstripedRAIDset(alsocalled“RAID0”)isusedwhenhighperformanceisrequiredfortheapplicationusedtoaccessthedataonthedisks.
For example, if the data contained on the J4 will be used primarily for video editing, a striped RAID is preferable because non-linear media
editingrequiresaccesstodataataspeedthatcannotnormallybeachievedwithamirroredRAIDset.NotethatifanydiskonaRAID0setfails
orisremovedfromtheset,ALLDATAontheRAIDwillbelost.BesuretobackupimportantdatacontainedonaRAID0set.
To create a striped RAID set:
1. Open Disk Utility, in the Utilities folder.
2. Select one of the disks that you want in the set, and then click RAID.
3. Click Add (+), and type a name for the RAID set.
4. Choose a format from the Format pop-up menu, and then choose Striped RAID Set from the RAID Type pop-up menu.
5. Drag the disks you want to add to the set to the list on the right.
6. Click the Options button to specify an optimal storage block size for the data stored.
Set the block size to match the size of data stored on the set. For example, a video processing application require fast throughput of large
amount of data, so a larger block size might be best.
7. Click Create.
RAID conguration
Disk Utility
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