[mythtv-users] 3Ware RAID 5 backend

GARETH GLACCUM gareth.glaccum at btopenworld.com
Sun Jan 7 22:32:43 UTC 2007

Not got experience with these devices in a myth sense, but I use them a lot 
at work (every system I implement).
The 7506 is quite an old model now, and is IDE. As a computer manufacturer 
we are finding that supplies of IDE are drying up a bit, and you may want to 
consider moving to SATA if this is going to be an investment for you (I 
think that making a 2.2TB array as you have here is an investment).
If you are doing a RAID 5 set, you loose one of the disks to parity. Thus 
you have 750GB *3 (4 disks minus 1 for parity) = 2250 GB. Some of this will 
be lost in formatting and data information. I would reckon that if you were 
to set this up you would not be over the 2 TB limit.
With the 9000 series (the current models) there is certainly no limit at 2TB 
(largest I have set is 11TB so far.). Personnally I have found 3ware to be a 
lot more dependable than adaptec, but we use them for slightly different 
purposes (3ware internal raid, Adaptec external SCSI raid)
Hope this helps,
----- Original Message ----- 
From: "Ben Dash" <ben_dash at yahoo.com>

I'm thinking about getting a 3Ware Escalade 7506-4 and
doing RAID 5 with 4 750GB drives.

More information about the mythtv-users mailing list