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Old 02-25-2005, 10:48 AM   #1
sgl
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Registered: Dec 2004
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FC3, HW RAID 5 Recommendations


All,

Building a new machine, FC3, and will be implementing RAID 5.

I've never implemented RAID, so bear with me. I'm in it to learn something.

What I am thinking of doing:

Card: 3ware 8506-LP, HW RAID 5, with up to 4 SATA Drives
HDs: Four Maxtor 300GB SATA Drives

So, I want RAID 5 for redundancy. 300GB drives to provide plenty of space.

So, now, the question is, is this an on-track solution, or am I in left field somewhere?

Also, I have read much about partitioning schemes for RAID 5, but it all seems conflicting. I was thinking of booting RAID.

Is the card a reasonable choice?
Any advice for partitioning?

Any advice would be greatly appreciated; as I said, I am brand new to RAID, so if I'm asking silly questions, please explain why, so that I can learn.

sgl
 
Old 02-25-2005, 05:11 PM   #2
ironwalker
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Registered: Feb 2003
Location: 1st hop-NYC/NewJersey shore,north....2nd hop-upstate....3rd hop-texas...4th hop-southdakota(sturgis)...5th hop-san diego.....6th hop-atlantic ocean! Final hop-resting in dreamland dreamwalking and meeting new people from past lives...gd' night.
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3Ware Escalade 8xxx family (e.g., 8506, 8006) — real hardware RAID. Supported by its own (3w-xxxx) driver in 2.4.18 or earlier: essentially any recent 2.4 kernel. Uses exact same driver as prior (non-SATA) 7xxx series. Faster at sequential reads than the Adaptec cards, if you tune the readahead buffers. Note: 3Ware provides utilities to support ATA hotswap with its host adapters (only), if using suitable drive enclosures/connectors.

You will,if Im not mistaken,have to use a 2.4 variaty kernel after 2.4.18 because 2.6 doesnt do hardware raid...well,it didnt when I needed it.It may now.


edit;

Looks like 2.6 kernel does support hardware raid but not for that card.

HP (/Compaq) SA5xxx — real hardware RAID. Supported in 2.6.6 and later kernels using the Compaq CISS (cciss) driver.


Last edited by ironwalker; 02-25-2005 at 05:16 PM.
 
Old 02-26-2005, 12:09 PM   #3
sgl
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Registered: Dec 2004
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Well, I'm glad I asked some questions. I thought, based on other google-ing, that the 3ware card WAS supported. Ah, well.

Can you please give me the link you used to determine the compatibility of the cards you mentioned? It will come in handy.

And recommendation on the type of filesystems to use (ext3, LVM, etc.), and partitioning schemes?

Thanks for taking the time to help me out.

Steve
 
  


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