From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roy Sigurd Karlsbakk Subject: Re: RAID performance Date: Mon, 11 Feb 2013 20:49:12 +0100 (CET) Message-ID: <31549980.18.1360612152269.JavaMail.root@zimbra> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Dave Cundiff Cc: linux-raid@vger.kernel.org, Adam Goryachev List-Id: linux-raid.ids > Why would you plug thousands of dollars of SSD into an onboard > controller? It's probably running off a 1x PCIE shared with every > other onboard device. An LSI 8x 8 port HBA will run you a few > hundred(less than 1 SSD) and let you melt your northbridge. At least > on my Supermicro X8DTL boards I had to add active cooling to it or it > would overheat and crash at sustained IO. I can hit 2 - 2.5GB a secon= d > doing large sequential IO with Samsung 840 Pros on a RAID10. Those onboard controllers are usually connect to 8x PCIe or similar. Al= so, those controllers from LSI won't allow TRIM support, which may come= in handy=E2=80=A6 Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 98013356 roy@karlsbakk.net http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt.= Det er et element=C3=A6rt imperativ for alle pedagoger =C3=A5 unng=C3=A5= eksessiv anvendelse av idiomer med xenotyp etymologi. I de fleste tilf= eller eksisterer adekvate og relevante synonymer p=C3=A5 norsk. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html