From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phil Turmel Subject: Re: Need Help with crashed RAID5 (that was rebuilding and then had SATA error on another drive) Date: Fri, 26 Aug 2016 08:38:27 -0400 Message-ID: References: <215fd175-65b6-e24b-338f-0c44ae030573@websitemanagers.com.au> <57BBDA5B.3020706@gmail.com> <57BBDC15.5030301@gmail.com> <57BC61F7.8070102@gmail.com> <57BE450B.4030700@gmail.com> <56e86db5-456d-e9c1-339d-ba8903fe5dde@websitemanagers.com.au> <57BE52BC.6040908@gmail.com> <933228e0-bce4-ffad-f48d-034bf89bc07f@websitemanagers.com.au> <57BF9965.1020403@gmail.com> <57BFAF75.1080807@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <57BFAF75.1080807@gmail.com> Sender: linux-raid-owner@vger.kernel.org To: Benjammin2068 , linux-raid@vger.kernel.org List-Id: linux-raid.ids On 08/25/2016 10:54 PM, Benjammin2068 wrote: >> You either must have >> it enabled, or you *must* apply the kernel driver timeout work-around >> (180 seconds) for that drive. Failure to do so results in crashed arrays. > > For the ST1000DM003, its SMART capabilities states "SCT Status Supported" -- What does that mean in comparison with the other HD103SJ drives? > > It does SCT but doesn't let the user control it or it doesn't do it at all? ERC is a feature within the SCT standard. For modern hard drives, claiming "SCT" support is comparable to a bottled water supplier advertising that their product is wet. > (smartctl -l scterc /dev/sde yields a message that implies control is not supported) ERC on the other hand is a valuable feature that modern drive manufacturers make you pay extra for. >> Enterprise and NAS drives work out of the box. Desktop/green drives do not. > > Yea - I didn't buy any green drives (purposefully anyway) for this system. I originally wrote that sentence as "Desktop drives do not." I added "/green" to clarify that some non-enterprise, non-NAS drives aren't marketed as desktop drives, but still lack ERC functionality. Your ST1000DM003 is marketed as a desktop drive. Seagate's product page for this model has links to other models for specialty use cases, including NAS. >> Some reading assignments from old discussions (read whole threads if you >> have time): >> >> http://marc.info/?l=linux-raid&m=139050322510249&w=2 >> http://marc.info/?l=linux-raid&m=135863964624202&w=2 >> http://marc.info/?l=linux-raid&m=135811522817345&w=1 >> http://marc.info/?l=linux-raid&m=133761065622164&w=2 >> http://marc.info/?l=linux-raid&m=132477199207506 >> http://marc.info/?l=linux-raid&m=133665797115876&w=2 >> http://marc.info/?l=linux-raid&m=142487508806844&w=3 >> http://marc.info/?l=linux-raid&m=144535576302583&w=2 > > Thanks, will go read. You will find detailed explanations for my comments above in these old threads. Phil