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Looking to upgrade my home fileserver. - Page 3

post #21 of 72
Quote:
Originally Posted by PuffinMyLye View Post

I've been looking at the Perc 6i cards on ebay and some seem to come with batteries and others don't. Is the battery needed? I've never used a RAID card before so I'm not very familiar with them.

The battery is for the cache. If in the event of a power outage, they battery will keep the last data to be written in the cache. It's useful and is normally used on servers.

Personally, my 3ware cards...don don't have the BBUs.
    
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post #22 of 72
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Quote:
Originally Posted by killabytes View Post

The battery is for the cache. If in the event of a power outage, they battery will keep the last data to be written in the cache. It's useful and is normally used on servers.
Personally, my 3ware cards...don don't have the BBUs.

So just a Perc 6i with the cable that gives me 4 SATA connectors should suffice for my RAID10 setup?
post #23 of 72
Quote:
Originally Posted by PuffinMyLye View Post

So just a Perc 6i with the cable that gives me 4 SATA connectors should suffice for my RAID10 setup?

Keep the drives under 2TB and you're golden. Nothing beats hardware RAID.
    
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post #24 of 72
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Quote:
Originally Posted by killabytes View Post

Keep the drives under 2TB and you're golden. Nothing beats hardware RAID.

By under do you mean up to and including 2TB drives?
post #25 of 72
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Originally Posted by PuffinMyLye View Post

By under do you mean up to and including 2TB drives?

Yeah, sorry redface.gif
    
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post #26 of 72
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Quote:
Originally Posted by killabytes View Post

Yeah, sorry redface.gif

Ok phew...cuz the HDD's are already ordered biggrin.gif.
post #27 of 72
Quote:
Originally Posted by killabytes View Post

Quote:
Originally Posted by PuffinMyLye View Post

So just a Perc 6i with the cable that gives me 4 SATA connectors should suffice for my RAID10 setup?

Keep the drives under 2TB and you're golden. Nothing beats hardware RAID.

After switching my NAS to ZFS from RAID-6 I wouldn't even look at RAID cards no matter how cheap they are (I run them in JBOD). Scrubbing the file system while it's live is just too good to pass up. I also don't have to deal with TLER on drives and the proprietary nature of each RAID controller.
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post #28 of 72
Quote:
Originally Posted by PuffinMyLye View Post

Ok phew...cuz the HDD's are already ordered biggrin.gif.

What did you decide on?
Quote:
Originally Posted by Dream Killer View Post

After switching my NAS to ZFS from RAID-6 I wouldn't even look at RAID cards no matter how cheap they are (I run them in JBOD). Scrubbing the file system while it's live is just too good to pass up. I also don't have to deal with TLER on drives and the proprietary nature of each RAID controller.

To each their own. I don't like that you can't do something simple like expanding a pool. You have to create a new pool and add that to an existing pool or something weird like that. ZFS can't beat hardware RAID on performance (when comparing something like 15K RPM SAS drives or SSDs), especially when newer controllers (LSI specifically) have features like CacheCade, adding in an SSD Cache in front of the array.
Edited by tycoonbob - 1/1/13 at 6:12pm
post #29 of 72
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Quote:
Originally Posted by tycoonbob View Post

What did you decide on?.

Went with 4 of the Toshiba 2TB's off newegg thumb.gif.

Still deciding on what to do with the RAID card though.
Edited by PuffinMyLye - 1/1/13 at 7:00pm
post #30 of 72
Quote:
Originally Posted by tycoonbob View Post

Quote:
Originally Posted by PuffinMyLye View Post

Ok phew...cuz the HDD's are already ordered biggrin.gif.

What did you decide on?
Quote:
Originally Posted by Dream Killer View Post

After switching my NAS to ZFS from RAID-6 I wouldn't even look at RAID cards no matter how cheap they are (I run them in JBOD). Scrubbing the file system while it's live is just too good to pass up. I also don't have to deal with TLER on drives and the proprietary nature of each RAID controller.

To each their own. I don't like that you can't do something simple like expanding a pool. You have to create a new pool and add that to an existing pool or something weird like that. ZFS can't beat hardware RAID on performance (when comparing something like 15K RPM SAS drives or SSDs), especially when newer controllers (LSI specifically) have features like CacheCade, adding in an SSD Cache in front of the array.

Adding a drive to a pool is a one click process with napp-it and only takes two lines in shell. ZFS SSD caching is supported via L2ARC/ZiL.

I think performance maybe better on ZFS specially since it leverages system RAM and benefits as L1 cache vs the tiny on board RAM on RAID cards. I haven't done formal benchmarks, though. ZFS SSD caching is supported via L2ARC/ZiL and it's native to the filesystem.
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