Hot answers tagged hard-drive
This is known as a hot-plug "drive carrier" or sometimes "drive sled", "tray" or "caddy"... And yes, they can be purchased separately from the drive. There are companies that specialize in providing aftermarket or replacement drive caddies. Ebay is also a popular source. What type of server or enclosure is that carrier from?
Dell Openmanage Server Administrator can show you the status of individual disks. If you have a 4e, that's likely a very old server, so I'm not sure if the OS/hardware combo that you have will actually support a modern version of Openmanage, but it's the typical answer to this type of question.
I want to know if there is some random I/O carried out by kernel processes that I'm unaware of? Well we don't know what you're aware of nor do you actually mention an operating system, but if we assume you mean Linux then there's unlikely to be anything purely-OS-based that would significantly benefit from the improved random IO capacity of an SSD ...
Exactly. No advantage. Well, not totally. SSD are very reliable when not written too often - they are RELIABLE when written to, but without a lot of writes they are terrific, especially in case of physical abuse. BUt for a server - no. I moved all high performance stuff to SSD Cached raid controllers and now use the retired Velociraptors for booting. No ...
After some trial and error, and some more google, I came accross the solution. I think others might enjoy this, so I answer myself: it turns out that the drive is a LVM (http://en.wikipedia.org/wiki/Logical_Volume_Manager_(Linux)) so, to fix this I do the following: install LVM (this is for ubuntu) apt-get install lvm2 modprobe dm-mod scan the disks ...
A second run of ddrescue with -r3 would be necessary if and only if the first run finished with "errsize > 0B" or "errors > 0" (something that was not recovered in the first pass). You would also be able to tell if there were any errors (needing the second run) by checking rescue.log to see if there were any blocks left in states other than + (finished). ...
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