[mythtv-users] New HD recommendation

[Douglas Sargent]

cool thanks

On Tue, Apr 19, 2016 at 10:54 AM, faginbagin <mythtv at hbuus.com> wrote:

> On 4/18/2016 6:55 PM, Douglas Sargent wrote:
>
>> Hi all,
>>
>>          I have 4 x 2TB disks which have been up and running the last 3
>> years nonstop, with no issues... cross your fingers.
>>
>>         Can someone recommend big disks that are reliable.
>>
>>         Once I buy them. Will it be as simple as mount it, copy
>> everything across, unmount the old, the mount the new with the name of
>> the old one. Seems right but way to easy. Darn I like Linux.
>>
>>        thanks guys
>>
>> Doug
>>
>
> I look for drives with the longest warranty. This Christmas I bought 4 3TB
> HGST drives with 3 year warranties. Got to look close, because some only
> have 2 year warranties. Before I put any new drive into service, I use the
> following procedure to increase the chances it's a good drive that will
> last.
>
> Capture SMART data via:
> smartctl -a /dev/sdx > smart0.out
>
> Write semi random data on the whole drive with:
> nohup shred -n1 -v /dev/sdx > shred.out &
> Go away for a couple of hours. Check shred.out and figure out how long it
> will take to finish. Come back when it should be done.
>
> Read the whole drive and compute a checksum:
> nohup md5sum /dev/sdx > md5sum.out &
> Go away for roughly the same time it took shred to write to the drive.
>
> Read the whole drive again and make sure the checksum matches:
> nohup md5sum -c md5sum.out > md5sum.chk &
> Go away for roughly the same time it took the first md5sum to read the
> drive.
>
> Write zeros to the drive:
> nohup dd if=/dev/zero of=/dev/sdx bs=1M > dd.out &
>
> Capture SMART data via:
> smartctl -a /dev/sdx > smart1.out
>
> Compare the two smart runs:
> diff smart0.out smart1.out
> Make sure there are no complaints about sectors.
>
> Make sure the kernel didn't report any errors:
> dmesg| tail
>
> If no SMART or kernel reported errors, create partition table, create
> partitions, mount, etc...
>
> If any errors, return immediately.
>
> Regards,
> Helen
>
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