# Replacing faulty HD in a MyBook Pro II raid

**URL:** <https://forums.sandisk.com/t/replacing-faulty-hd-in-a-mybook-pro-ii-raid/251587>\
**Category:** External SSD for macOS\
**Created:** [June 3, 2013, 2:51pm UTC](https://forums.sandisk.com/t/replacing-faulty-hd-in-a-mybook-pro-ii-raid/251587 "2013-06-03T14:51:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![icordoba](https://avatars.discourse-cdn.com/v4/letter/i/ecae2f/32.png) [@icordoba](https://forums.sandisk.com/u/icordoba)\
**Post date:** [June 3, 2013, 2:51pm UTC](https://forums.sandisk.com/t/replacing-faulty-hd-in-a-mybook-pro-ii-raid/251587/1 "2013-06-03T14:51:43Z")

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Dear Sirs,

one of the HDs in my MyBook Pro II external drive has failed today. I have all my data as the first drive is working correctly but it’s being difficult to find a replacement drive so I can get my RAID back to work. I’d like to be able to work in RAID mode ASAP.

Can I use other model of WD 1 TB drives? I have been thinking about backing up information and install 2 new bigger drives in the MyBook Pro II casing. is that possible or it will only with with WD 1 TB drives?

thanks,

Ignacio

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**Author:** ![Help4All](https://avatars.discourse-cdn.com/v4/letter/h/e19adc/32.png) [@Help4All](https://forums.sandisk.com/u/Help4All)\
**Post date:** [June 5, 2013, 12:17am UTC](https://forums.sandisk.com/t/replacing-faulty-hd-in-a-mybook-pro-ii-raid/251587/2 "2013-06-05T00:17:17Z")

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Hello,

As a recommendation, will be better if you try to get the same type of unit as the one that went bad.

It’s not recommended to use a different drive to rebuilt a raid configuration.