Which Hard drive to purchase

[KryptoNyte]

Originally Posted by Fuzzy

That's why I recommended the WD purple drives. Write-centric caching to handle those peak times with a high number of recordings at the same time. Even if I force 4 recordings at a time to one of my WD30PURX drives, the queue length never goes above 0.50, meaning the drive is more than keeping up.

On one Sage server, I have (2) primes recording [6 tuners simultaneously] with Charter Cablecards to one of the 3TB WD Green. No hard drive issues that I know of - been going for about 18 months now.

The OS drive is Sammy SSD.

[dvd_maniac]

I was wondering if anyone has used the ARCHIVE HDDs for imported videos?
I wouldn't use them for recordings but as an imported videos drive where videos are usually just added to... I have been thinking about getting a few.
Any experience?

[Fuzzy]

Originally Posted by KryptoNyte

On one Sage server, I have (2) primes recording [6 tuners simultaneously] with Charter Cablecards to one of the 3TB WD Green. No hard drive issues that I know of - been going for about 18 months now.

The OS drive is Sammy SSD.

A lot depends on the source. Cable is likely to cap out at 7-8Mbps per recording tops (sometimes as low as 5Mbps, depending on the channel). ATSC can run up to 18-19Mbps, if the station doesn't have any subchannels.

[KryptoNyte]

Sounds right, Fuzzy. I see the local affiliate channels (via cablecard) are coming in between 13 and 14 mbits/sec, but everything else is coming in between 8 to 10 mbits/sec.

[Wayneb]

Originally Posted by SHS

I have used Seagate for min years I have one 500GB that 7+ old and
On avg seagate should have 24/7 run life about 4+
As rule you replace them after 4 years unless there bad noise or heath status change with smart and use them as non run for file backup

I had longer lasting Seagates when they were lower capacity, the last Seagates I used were all 3 TB and they all started have errors right around 2 years. The only info I see on hard drive reliability is from Back Blaze, I chose to use HGST drives due to the info from their usage. So far the only bad Hitachi drive I had was a 5 TB NAS drive that was DOA, it might have been damaged in shipping.

[Wayneb]

Originally Posted by KryptoNyte

I have 4 large Seagate drives, all of them over 2 years old, haven't lost one yet. Every time this conversation comes up there's a mixed bag of user experiences with any given brand and model it seems.

I have a rather large stack of dead Seagate drives, I have yet to see anyone complain of high early failure rates on HGST drives.

[SHS]

Originally Posted by Wayneb

I had longer lasting Seagates when they were lower capacity, the last Seagates I used were all 3 TB and they all started have errors right around 2 years. The only info I see on hard drive reliability is from Back Blaze, I chose to use HGST drives due to the info from their usage. So far the only bad Hitachi drive I had was a 5 TB NAS drive that was DOA, it might have been damaged in shipping.

1.5 and 3TB form both WD and Seagate seem have poor reliability from what I have read, yes I have read Back Blaze review as well but I also look at user review on newegg and min other place.
What I wish I had was real data on is type failure as in Logical (Disk Controller), Media (Platters), Head Crash (Read/Write) or Mechanical (Motor/Actuator) failures.

[Wayneb]

. Hard Forum has a bunch of people who have built very high capacity servers that make my 48TB server look like a toy, read over there and you might find some info on what the most common drive failures are.

[SHS]

Originally Posted by dvd_maniac

I was wondering if anyone has used the ARCHIVE HDDs for imported videos?
I wouldn't use them for recordings but as an imported videos drive where videos are usually just added to... I have been thinking about getting a few.
Any experience?

I take it your ref to Seagate Archive 5, 6TB and 8TB drive ?
I did lot checking on those drive
SMR technology has limitations
1: Drive are slow from what I heard and read so far.
2: Best used for writing data only that will never ever going to be del or over overwritten in any way.
3: SMR drives are not designed for Raid unlike the HGST He8 which is so keep that in mind if your using NAS system.

Originally Posted by Wayneb

. Hard Forum has a bunch of people who have built very high capacity servers that make my 48TB server look like a toy, read over there and you might find some info on what the most common drive failures are.

I take your ref to [H]ardOCP Forum ?.

[Wayneb]

Originally Posted by SHS

I take your ref to [H]ardOCP Forum ?.

Yes, http://hardforum.com

[tvmaster2]

Originally Posted by Fuzzy

I've had great success with WD's AV-GP drives (now called Purple). Their cache is tuned perfectly for the write-centric use in a DVR, as opposed to the read-centric usage of most 'desktop' drives.

is this the one you refer to?

http://www.microcenter.com/product/4...WD20PURX_-_OEM

[Fuzzy]

Originally Posted by tvmaster2

is this the one you refer to?

http://www.microcenter.com/product/4...WD20PURX_-_OEM

Yeah, that's them.

[tvmaster2]

Originally Posted by Fuzzy

Yeah, that's them.

do you understand what the AllFrame feature is in this article:

http://hdd.userbenchmark.com/Compare...014/1789vs2662

[Taddeusz]

Originally Posted by tvmaster2

do you understand what the AllFrame feature is in this article:

http://hdd.userbenchmark.com/Compare...014/1789vs2662

Sounds like a feature that specialized security monitoring equipment has to ensure that full frames are cached. Probably ensures a certain level of data integrity to the drive.

[Fuzzy]

Originally Posted by Taddeusz

Sounds like a feature that specialized security monitoring equipment has to ensure that full frames are cached. Probably ensures a certain level of data integrity to the drive.

I honestly hadn't noticed the change in direction in the line from the old AV-GP drives to the Purple branding.

[jgsouthard]

Originally Posted by SHS

98% is just bunch marketing BS from WD yes and even Seagate and other.
All harddrive build using platters are paired with magnetic heads arranged on a moving actuator arm, which read and write data to the platter surfaces that has not change in the last 50+ years the thing that has change over the year the hard drive controller.
Most of what pay for Higher RPM and Longer Limited Warranty.

I agree. I've been building and supporting PC's for a long time, and I've used and replaced a lot of hard drives. For me the key factors are performance, noise, and warranty. I've found WD drives to be quieter than Seagate, Hitachi, or most of the others; and that can be important in DVR applications. For SageTV and most other applications I use 7200 rpm and look for 3 years+ warranties, and that usually leads me to WD Black. WD is also very good about replacement under warranty, and I've gotten several replaced with no issues. That's why I go for the longer warranty even if it costs a bit more -- it's been worth it for me in the long run I think.

The only time I might consider stepping down from WD Black is in an application where temperature buildup and cooling was a critical issue (e.g. a very compact media box with limited cooling), since Blacks tend to run hotter.

[tvmaster2]

Originally Posted by jgsouthard

I agree. I've been building and supporting PC's for a long time, and I've used and replaced a lot of hard drives. For me the key factors are performance, noise, and warranty. I've found WD drives to be quieter than Seagate, Hitachi, or most of the others; and that can be important in DVR applications. For SageTV and most other applications I use 7200 rpm and look for 3 years+ warranties, and that usually leads me to WD Black. WD is also very good about replacement under warranty, and I've gotten several replaced with no issues. That's why I go for the longer warranty even if it costs a bit more -- it's been worth it for me in the long run I think.

The only time I might consider stepping down from WD Black is in an application where temperature buildup and cooling was a critical issue (e.g. a very compact media box with limited cooling), since Blacks tend to run hotter.

Even though these Purples seem to run at 5400rpm, they also have quite low power consumption specs, which is nice. Testing one now to see if the 5400 is good enough for Sage

[MattHelm]

I replaced my old "Greens" with "Purples" this go around, 4 in my dad's machine with 10 tuners (and yes, just the other day, he ran out of tuners), and no hitches at all. That's 3 recordings in HD, plus 1 playback (on 1 drive), at once, zero issues so far.

I did mess up and order 3TBs, which seemed the problem child for everyone.

[SHS]

Originally Posted by tvmaster2

Even though these Purples seem to run at 5400rpm, they also have quite low power consumption specs, which is nice. Testing one now to see if the 5400 is good enough for Sage

It should 5400 up to 7200 under heavy load after all it IntelliPower drive

[reggie14]

Originally Posted by SHS

It should 5400 up to 7200 under heavy load after all it IntelliPower drive

IntelliPower drives don't have variable spin rates. It's generally assumed they are 5400- some are possibly a little higher.