[mythtv-users] advice on recording direct to NAS

[Michael Watson]

On 27/05/2015 1:26 PM, James Linder wrote:
>> On 26 May 2015, at 6:36 pm, mythtv-users-request at mythtv.org wrote:
>>
>>>> Hi all, looking for advice:
>>>>
>>>> Background: I?ve just lost a second HDD in 6months and its getting very,
>>>> very, very annoying.
>>>>
>>>> I have a NAS that would have capacity to record to, but have not done so
>>>> because of concern for failed recordings due to potential inconsistencies
>>>> in network and / or NAS performance. I run 4 HDD in my mythbackend
>>>> supporting 30tuners (nominal worst case 8 recordings at a time due to
>>>> overlap of pre/post roll).
>>> [snip]
>>>
>>> I?m amazed at the general opposition to the concept. Seagate?s ATA more than an interface paper says that if you have more than 1 disk in a box then you *will* have disk failures,
>>> Does this describe you?
>>>
>>> If you get NAS with an array and they use commercial not enterprize disks make sure they have vibration resistant mounting for each disk (some do)
>>> James
>>> _______________________________________________
>> James, I didn't follow your point. Are you saying that having >1 disk in a machine *will* cause disk failures?
>>
>> I find it hard to believe that a machine with only 1 disk won't have failures. Even 1 disk in a machine *will* cause failures. Eventually. Sometime between now and the year 4020 most likely.
> I don’t say, seagate does, but the Homer Simpson test of 'is it true' says plausable:
> Their argument is Disk1 seeks and the vibration knocks Disk2 off track so Disk2 seeks knocking Disk1 off track ad infinitem
>
>> Or was your point about resistance to recording direct to a NAS?
> My mate used a WD NAS box without vibration mounting and within 6 months had (dunno the technical detail) enough failures to render the raid array broken. He replaced disks, mounted each disk on 4 small blobs of silicone rubber and years have passed with nary a peep. (archaic english meaning with no problems)
> The *only* issue is that the backend streams to the frontend but if you have (or had ?) local files then frontend plays local (NFS) files.
> He thinks it is a good solution to use NAS+RAID and it works well for him.
> James
My MBE has 6x SATA Drives mounted in Intel Certified Server Chassis - 
Six Drives in a Metal cage with no rubber mounting to be seen, 2x 50mm 
Fnas mounted on front blowing fresh air over the drives, No RAID.  3 
Drives are 5+ Years Old, others are 3+ Years Old, a mixture of Seagate, 
Hitachi, WD and Samsung.

>
>
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