I/O Problems

S

spearox

Renowned Member
Jun 6, 2013
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Hello,

I have one server with one i7-3770K and with 32GB ram and 2 1TB WD disk SATA3 7200rpm.

I now use software raid 1 and the avarge I/O rate with 5 vps ~10%.

The community dosen't have much money but i need to do something.

What is the better choose? Hardware Raid controller or one NAS with RAID 1 and with NFS share?

And one more which disk type can i get lower I/O?

Sorry for my bad eng and for the no money but I want everything style.
 
"And one more which disk type can i get lower I/O?" I hope you mean higher I/O? If that is the question: SAS disks or SDD disks.

What is the better choose? Hardware Raid controller or one NAS with RAID 1 and with NFS share?
If you only have one server I would go for a hardware raid card. I have only experience with LSI based raid controllers so I would recommend either LSI or LSI rebranded raid controllers like the one from Dell. Despite a LSI and a Dell rebranded card are using the same chip Dell's cards is cheaper and since a lot of Dell servers are decommissioned every day you can easily get a used card on ebay for $100-150.
 
mir said:
"And one more which disk type can i get lower I/O?" I hope you mean higher I/O? If that is the question: SAS disks or SDD disks.

What is the better choose? Hardware Raid controller or one NAS with RAID 1 and with NFS share?
If you only have one server I would go for a hardware raid card. I have only experience with LSI based raid controllers so I would recommend either LSI or LSI rebranded raid controllers like the one from Dell. Despite a LSI and a Dell rebranded card are using the same chip Dell's cards is cheaper and since a lot of Dell servers are decommissioned every day you can easily get a used card on ebay for $100-150.
Click to expand...

Thanks for the help i mean lower I/O delay. :) And i mean to qcow2 or raw.
You can tell me RAID cards what you use and fully compatible with proxmox? :) And if i want to search raid cards what i need check whats important?
 
spearox said:
Thanks for the help i mean lower I/O delay. :) And i mean to qcow2 or raw
Click to expand...
lower I/O delay will benefit from a raid controller. raw gives lower I/O delay at the cost of not being able to make snapshots and clones. Since the difference is not that great I would suggest to use qcow2.
 
mir said:
A suggestion could be:
Controller: http://www.ebay.com/itm/Dell-Raid-C...sk_Controllers_RAID_Cards&hash=item3a886e5509
SAS->SATA connectors: http://www.ebay.com/itm/SAS-Control...30?pt=AU_CablesConnectors&hash=item53f62e0302

Good place to read: http://www.overclock.net/t/359025/perc-5-i-raid-card-tips-and-benchmarks

$101,50 before shipment and tax.
Click to expand...

Thank you for the help!
I think yes but better to ask this controller compatible with this motherboard? http://www.msi.com/product/mb/Z77A-G43.html
 
It only needs a PCIe x8 or PCIe x16 in case now PCIe x8 is available. If you can plug the card in it will work, so to speak;) You should plug it into the blue PCIe sockets.

BTW. You should by an extra disk and use your 3 disk in a raid5 => 2 TB data and 1 TB parity => you can loose one disk without loosing your data.
 
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mir said:
It only needs a PCIe x8 or PCIe x16 in case now PCIe x8 is available. If you can plug the card in it will work, so to speak;) You should plug it into the blue PCIe sockets.

BTW. You should by an extra disk and use your 3 disk in a raid5 => 2 TB data and 1 TB parity => you can loose one disk without loosing your data.
Click to expand...

If i get allow to buy disk i want to buy 2 more and i want to set up raid 10. With this noob disk i hope i get better performance in raid 10.
 
You already or someone here already used this controller or only suggest me to use this? And very thanks for the helps!
 
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