I/O Problems

[spearox]

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.

 

[mir]

"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.

 

[spearox]

"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.

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?

 

[mir]

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.

 

[mir]

Thanks for the help i mean lower I/O delay. And i mean to qcow2 or raw

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.

 

[spearox]

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.

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

 

[mir]

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.

 

[spearox]

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.

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.

 

[mir]

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.

raid10 gives better iops than raid5 at the cost of space. I prefer raid10 myself.

 

[spearox]

You already or someone here already used this controller or only suggest me to use this? And very thanks for the helps!