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[174.30.254.56]) by smtp.gmail.com with ESMTPSA id y125sm262787ity.13.2016.12.01.17.23.44 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 01 Dec 2016 17:23:45 -0800 (PST) Received: from localhost (WorkBox.homestead.org [local]) by WorkBox.homestead.org (OpenSMTPD) with ESMTPA id 855fb5db; Thu, 1 Dec 2016 19:23:44 -0600 (CST) References: <935-58400880-ed-6b8b4580@136822448> User-agent: mu4e 0.9.16; emacs 25.1.1 From: Brandon J. Wandersee To: Matthias Petermann Cc: Stefano Garzarella , freebsd-questions@freebsd.org, Michele Pes Subject: Re: How to detect if a disk is an SSD In-reply-to: <935-58400880-ed-6b8b4580@136822448> Date: Thu, 01 Dec 2016 19:23:44 -0600 Message-ID: <861sxrdsyn.fsf@WorkBox.homestead.org> MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Dec 2016 01:23:47 -0000 Matthias Petermann writes: > Hello Stefano, > > one option might be to check the kernel log via > > % dmesg > > I would expect some entries like: > > ada4 at ata0 bus 0 scbus4 target 1 lun 0 > ada4: ACS-2 ATA SATA 3.x device > ada4: Serial Number S2NRNXAGC00170D > ada4: 150.000MB/s transfers (SATA, UDMA6, PIO 8192bytes) > ada4: 114473MB (234441648 512 byte sectors) > ada4: quirks=0x3<4K,NCQ_TRIM_BROKEN> > > which includes the model number / name. Feeding this into Google should provide clarity if it is a SSD or not. camcontrol(8) can be used for more extensive information, as well: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ # camcontrol identify ada0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ pass0: ACS-2 ATA SATA 3.x device pass0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 512bytes) protocol ATA/ATAPI-9 SATA 3.x device model Samsung SSD 840 EVO 250GB firmware revision EXT0DB6Q serial number S1DBNSADB01138V WWN 50025388a00b2df3 cylinders 16383 heads 16 sectors/track 63 sector size logical 512, physical 512, offset 0 LBA supported 268435455 sectors LBA48 supported 488397168 sectors PIO supported PIO4 DMA supported WDMA2 UDMA6 media RPM non-rotating Feature Support Enabled Value Vendor read ahead yes yes write cache yes yes flush cache yes yes overlap no Tagged Command Queuing (TCQ) no no Native Command Queuing (NCQ) yes 32 tags NCQ Queue Management no NCQ Streaming no Receive & Send FPDMA Queued yes SMART yes yes microcode download yes yes security yes yes power management yes yes advanced power management no no automatic acoustic management no no media status notification no no power-up in Standby no no write-read-verify yes no 0/0x0 unload no no general purpose logging yes yes free-fall no no Data Set Management (DSM/TRIM) yes DSM - max 512byte blocks yes 8 DSM - deterministic read no Host Protected Area (HPA) yes no 488397168/488397168 HPA - Security no ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- :: Brandon J. Wandersee :: brandon.wandersee@gmail.com :: -------------------------------------------------- :: 'The best design is as little design as possible.' :: --- Dieter Rams ----------------------------------