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Hi guys,
Got questino about my Areca 1680-4Gb version.
Since I got the 4g cache memory, when I created the raid, which one I should choose ?
write-through or write-back cache. For me, I thought write-back cache is the one that would utilize my 4gb cache better.
On my Areca card, I have 6 internal port, which is all used up. How do I utilize the external port to expand more hard drives ? Do I purchase a SAS expander, and connect that to the external port and bring that to another chasis ?
Thanks !
Finally, the raid set is expanded, but I notice that the underlying volume did not increase in capacity.
Apparently I need to 'modify the volume set' capacity in order to apply the additional 4tb.
I am in the process of ripping my dvd collection (the existing raid6 array is already quite full) and I am loathed to start again. Will modifying the volume set increase the capacity without wiping my pre-existing dvd rips, or will it blat the entire array and force me to start again?
Status Update
1 x Areca 1880i
1 x HP SAS Expander
5 x Samsung F4 2TB HDDs (HD204UI)
Raid array built and rebuilt 3 times with no errors
24+hours total of Winthrax with no errors
I THINK these drives work with the 1880!
Status Update
1 x Areca 1880i
1 x HP SAS Expander
5 x Samsung F4 2TB HDDs (HD204UI)
Raid array built and rebuilt 3 times with no errors
24+hours total of Winthrax with no errors
I THINK these drives work with the 1880!
Just one question, have you also rebooted numerous times without any drive time-outs? 'Cause that's where mine screws up with my HD154UI disks, it works fine once it's up, but I can't boot with the disks attached.
the underlying volume doesn't automatically increase in capacity after a raid set expansion because the card doesn't know whether you want to expand the volume set OR create additional volume sets.
It's not possible. The RAID card has no way of differentiating between data and unused space since it doesn't operate on that level.
I've actually heard it is possible
LOL! points for comedy.
Foreground, and no it is not rebuilding the array from the 1231, that array is in there, Normal and active.
So if you had a choice between a 16XX or an 18XX card at this moment which would you choose?
Also does anyone have any numbers or data to show the increases (or decreases) in performance of the RAID array as more memory is added to the Areca cards?
NOTE this would be for a RAID6 raid away with 10x2TB drives.
to answer your memory question: http://arecaraid.com/forum/viewtopic.php?f=7&t=6
I'd take those benches with a grain of salt. It was done back in May and the guy didn't specify whether it was using the old Marvell silicone or the newer PowerPC production silicone. As always I don't believe benches until I see them for myself so I'll post some more definitive 1680 vs 1880 results this weekend.