From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stan Hoeppner Subject: Re: USB-to-SATA and RAID Date: Tue, 23 Jan 2018 18:40:14 -0600 Message-ID: References: <20180123201614.GI23784@otheros> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20180123201614.GI23784@otheros> Content-Language: en-US Sender: linux-raid-owner@vger.kernel.org To: =?UTF-8?Q?Linus_L=c3=bcssing?= , linux-raid@vger.kernel.org List-Id: linux-raid.ids On 01/23/2018 02:16 PM, Linus Lüssing wrote: > Hi, > > By chance I found this statement in the Linux RAID Wiki: > > "Do NOT use [USB devices] as part of your array. They have > a timeout/disconnect mechanism which interacts very > badly with the raid code." [0] > > Could someone elaborate further on this? Does "interacts very > badly" mean that there will be potential data loss / data > corruption? Or does "very badly" just mean short, temporary > performance issues / lags upon a disk failure? Potential data loss / data corruption.  Don't use USB.  Use eSATA instead.  The list archives of linux-raid and linux-xfs are dotted with USB disk horror stories. > Regards, Linus > > [0]: https://raid.wiki.kernel.org/index.php/Choosing_your_hardware,_and_what_is_a_device%3F#USB_devices > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html