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5

That particular RAID controller claims 8-lane PCI Express 2.0 compliancy meaning that effectively you'll already be limited to 8 * 4 Gbs = 32 Gbs (or 4000 MB/s) regardless of what's connected to the RAID card. Each SAS SFF8088 connector will cary 4 SAS lanes over a single cable, when each link is at the maximum 6 Gbs port speed theoretically you indeed get ...


3

Based on my experience with similar controllers like Smart Array P420i from ProLiant ML350p Gen8 or ServeRAID M5015 SAS/SATA Controller from IBM x3560 M3 I'd say: 6Gbps per mini-SAS (i.e. 12Gbps) - best possible scenario. I have not tested two SFF8088 ports, only one, and I've hit 6 gbps limit.


3

The heat-pad under a smooth chip (motor controller) is missing in the most of the consumer drives (seagate, WD), but is usually present in the most of the enterprise class disks. (so the tiny smooth chip is much more likely to die under the load from overheat in the desktop model). Also enterprise drives usually have a couple of the vibration sensors. Rubber ...


3

There seems to be a known bug in the dir_index feature (which you should be able to disable) that is caused by hashes of filenames colliding: http://blog.merovius.de/2013/10/20/ext4-mysterious-no-space-left-on.html


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Yes, enterprise SAS disks spin at a fixed rotation speed. They will not go into power or energy-saving modes like certain consumer drives.


2

RAID5 is unsuitable full stop A good explanation (from 5 years ago) is here: http://storagemojo.com/2010/02/27/does-raid-6-stops-working-in-2019/


2

Given that your disc is overloaded - yes, that is a bottlneck. One disc is notoriously crappy in IO (unless it is an SSD). That said - if you run game servers, do you really care about the starting time (which is rare)? Just "sit it out". Once the programs are started, things should be faster. For FAST IO - you ultimately want (need) an SSD.


2

I hate when people say that the server is "down" or "crashed". What exactly is wrong with it? The HP Smart Array E200i controller appeared in HP ProLiant G5 servers from 2006-2008. The B320i controller is featured in low-end HP ProLiant Gen 8 servers, which were introduced in 2012. The disks have different drive carriers and the controllers have ...


1

Seriously, you need help regardless RAID controller state without giving it's name?! You have very big chances to recover the data with just pluging one of the mirrors to another computer, assuming that raid state was consistent. If you worry about it you can do non-destructive copy byte-by-byte to other media to create disk image and operate on that. You ...


1

The best way to attack it is to look at http://www.brendangregg.com/linuxperf.html and follow Brendan's advice. Specifically you want his iosnoop tool that will tell you who access the storage the most. But you'll do yourself a big favor if you read through it to learn his thought process and methodologies as that would benefit you a lot in the long term.


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FSTAB(5) Instead of giving the device explicitly, one may indicate the filesystem that is to be mounted by its UUID or LABEL (cf. e2label(8) or xfs_admin(8)), writing LABEL= or UUID=, e.g., LABEL=Boot' orUUID=3e6be9de-8139-11d1-9106-a43f08d823a6'. Otherwise, trust in udev to populate /dev/disk, but this will only tell you how things are ...


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HP's official statement on moving hard drive. Moving drives and arrays You can move drives to other ID positions on the same array controller. You can also move a complete array from one controller to another, even if the controllers are on different servers. Before moving drives, you must meet the following conditions: • If moving the drives to a ...


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Full reinstall is IHMO safer option, Windows most probably will give you BSOD error 0x0000007B @ boot due: incorrect disk controller driver, lack of disk controller driver, https://support.microsoft.com/en-us/kb/324103 Full reinstall and full array sync is also better, because it'll help you verify the hardware - disks, memory and its stability.



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