Comments on: RAID http://www.prepressure.com Prepress, printing, PDF, PostScript, Fonts and stuff... Fri, 10 Feb 2012 16:14:30 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Meathead http://www.prepressure.com/library/technology/raid#comment-152885 Meathead Fri, 03 Feb 2012 14:45:06 +0000 http://www.prepressure.com/library/technology/raid#comment-152885 Ignore that, just realised one is 7200 PRM and the other is 5400 RPM. Will need to upgrade the latter anyway Ignore that, just realised one is 7200 PRM and the other is 5400 RPM. Will need to upgrade the latter anyway

]]> By: Meathead http://www.prepressure.com/library/technology/raid#comment-152884 Meathead Fri, 03 Feb 2012 14:42:08 +0000 http://www.prepressure.com/library/technology/raid#comment-152884 I have a question and can't seem to find the answer. I have two 500GB SATA drives, but one has 16mb cache, while the other has 8mb cache. Would these be okay in a RAID 0 ? Or should the drives be identical in all aspects (not just storage space)? Would the performance enhancement not be worth the bother (Compared to 2x 500GB 16mb cache) I have a question and can’t seem to find the answer.

I have two 500GB SATA drives, but one has 16mb cache, while the other has 8mb cache.

Would these be okay in a RAID 0 ? Or should the drives be identical in all aspects (not just storage space)? Would the performance enhancement not be worth the bother (Compared to 2x 500GB 16mb cache)

]]> By: James http://www.prepressure.com/library/technology/raid#comment-139591 James Tue, 17 Jan 2012 02:16:45 +0000 http://www.prepressure.com/library/technology/raid#comment-139591 When a product specify this: RAID0/1/LARGE/3/CLONE/5/10 What is LARGE and CLONE? When a product specify this:

RAID0/1/LARGE/3/CLONE/5/10

What is LARGE and CLONE?

]]> By: Geekthinker http://www.prepressure.com/library/technology/raid#comment-130709 Geekthinker Fri, 06 Jan 2012 06:57:14 +0000 http://www.prepressure.com/library/technology/raid#comment-130709 It is a safeguard WHEN the storage system gets stolen what are you implying... It is a safeguard WHEN the storage system gets stolen

what are you implying…

]]> By: Ray Clancy http://www.prepressure.com/library/technology/raid#comment-118658 Ray Clancy Thu, 08 Dec 2011 02:50:16 +0000 http://www.prepressure.com/library/technology/raid#comment-118658 Running raid0 bootable, partitioned with 2 drives, boot and root, minimum swap on cf cards. Desire to --grow to a third device. Such was possible with the following: mdadm --grow /dev/md0 --raid-devices=3 --add /dev/sdxx Error occurs: mdadm /dev/md0; could not set level to raid4..... Normal procedure is to use raid4 to resync and then revert back to raid0. Why does this procedure fail? It used to work.... Running raid0 bootable, partitioned with 2 drives, boot and root, minimum swap on cf cards.

Desire to –grow to a third device.

Such was possible with the following:

mdadm –grow /dev/md0 –raid-devices=3 –add /dev/sdxx

Error occurs: mdadm /dev/md0; could not set level to raid4…..
Normal procedure is to use raid4 to resync and then revert back to raid0.

Why does this procedure fail? It used to work….

]]> By: Laurens http://www.prepressure.com/library/technology/raid#comment-98810 Laurens Sun, 11 Sep 2011 07:56:20 +0000 http://www.prepressure.com/library/technology/raid#comment-98810 No it isn't No it isn’t

]]> By: Joe C. http://www.prepressure.com/library/technology/raid#comment-98276 Joe C. Wed, 07 Sep 2011 20:16:47 +0000 http://www.prepressure.com/library/technology/raid#comment-98276 One additional ques: I assume RAID 5 is the same as RAID 4+1? Thanks One additional ques: I assume RAID 5 is the same as RAID 4+1? Thanks

]]> By: Joe C. http://www.prepressure.com/library/technology/raid#comment-98274 Joe C. Wed, 07 Sep 2011 20:15:20 +0000 http://www.prepressure.com/library/technology/raid#comment-98274 Hello: Can someone tell me if RAID 4+2 is the same as RAID 6? Any input is appreciated. Joe ATT Corp West Demoines IA Hello:

Can someone tell me if RAID 4+2 is the same as RAID 6?

Any input is appreciated.

Joe
ATT Corp
West Demoines IA

]]> By: RAKHILESH http://www.prepressure.com/library/technology/raid#comment-96701 RAKHILESH Tue, 23 Aug 2011 04:31:13 +0000 http://www.prepressure.com/library/technology/raid#comment-96701 what is raid7? what is raid7?

]]> By: Vishu http://www.prepressure.com/library/technology/raid#comment-96059 Vishu Tue, 16 Aug 2011 12:07:20 +0000 http://www.prepressure.com/library/technology/raid#comment-96059 How to define RAID 5 performance for 8*600 GB? For rotating Disc. How to define RAID 5 performance for 8*600 GB? For rotating Disc.

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