when talking about SATA the real question is are you talking about standard retain or nearline.
Retail sata drives stats are based on inherine instability at the write cache layer and burst rates based on the cache used as a write buffer. An fsync on a retail sata drive lies to youand says its complete when it hits the write cache. Nearline is honest about fsyncs.
Sas is honest across the board and they tend to be higher production quality drives with lower failure rates and run at higher rpm's and therefore are faster.
That said if you compare a nearline SATA and a SAS disk at the same number of RPM's you get relatively the same performance but the SATA drive is cheaper.
That said it comes down to service contracts with manufacturers. If you don't intend to have one SAS definitely pays off. If you have a good service contract and all other specs, all other specs are equal and you don't mind swapping out disks more often SATA nearline is the way to go.
-- Sent from my HP Pre3
On Sep 15, 2014 7:24 PM, ToddAndMargo <[email protected]> wrote:
>> On Sep 15, 2014 7:07 PM, ToddAndMargo <[email protected]> wrote:
>>
>> Hi All,
>>
>> I have a customer whose with a long term project which
>> includes about 30 IP cameras. He wants to both view and
>> record. Anyone know or have a favorite Linux server
>> for such?
>>
>> Many thanks,
>> -T
>>
On 09/15/2014 04:17 PM, Paul Robert Marino wrote:
> Look at the ones that specialize as a DVR there are a few of them but
> off the top of my head I can't remember the name of the software
> involved. But there are a few distros that specialize in this. A warning
> though with that many feed you will probably need a hefty RAID which may
> need an external disk enclosure at the least just to get the bandwidth
> from striping across a sufficient number of spindals and SSD's won't help.
Hi Paul,
What is your technical opinion of SATA vs SAS in this
type of application (tons of data constantly flowing)?
-T
