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Home / Extras / ZAR 8.3 Manual / General usage / Configuring RAID recovery / Defining a RAID manually

Defining a RAID manually

In case the parameter set is known, it is reasonable to setup the array manually, rather than have a program to perform an automated processing.

	Member disks, adding and ordering
	First of all, you need to set up array members. This is simply done by adding a disks one by one with an appropriate button. The ordering of drives is significant, so make sure you have it matching the actual order of the disks in the array. In case one disk is missing from a RAID5, click "Add parity" and the corresponding regenerated drive will be added automatically.

	Array components, offsets and sizes
	Once the member disks are identified, the location of the data on these disks should be defined. For each member disk, enter two values: Start identifies the LBA on a physical device at which the array data starts. Size is the number of sectors in the array component. A hardware RAID typically uses the same values across all the member disks.

	Array configuration
	Parameters in this section control the array address translation. You need to specify the Array Type (be careful not to confuse Checkerboard and LDM variations of a RAID5) first. For a striped array (RAID0 or RAID5), enter the Stripe Size. Valid sizes are 2, 4, 8, 16, 32, 64, 256 and 512 sectors. For an array which does not stripe data (e.g. RAID1), stripe size of 1 sector should be set. RAID5 arrays require parity start and rotation defined.

Once you are done with the configuration, click OK. The array you have just specified will be added to the list of the available physical devices and ZAR will switch to the "simple volume recovery" mode.

Configuring RAID recovery

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Sounds good, but it didn't identify my camera as a drive. I use an Olympus C740UZ with an XD picture card, and Windows XP. Windows reads the camera as removeable disk E: but ZA failed to pick it up. I tried all the different processes suggested by ZA help, without success. Shame, because all the other reviews suggest it's a nice little bit of software. Try it anyway, you've got nothing to lose.