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  1. #1
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    considering a 10TB SATA SSD RAID0 ...

    Hey guys,

    I have a set of large ldaps, which total about 8TB as of this writing, and I am considering serving them "random access" , by constructing a 10TB RAID0 out of say Crucial 2TB SATA SSD's.

    you reckon it will work ?
    "monsters John ... monsters from the ID..."
    "ma vule teva maar gul nol naya"

  2. #2
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    Re: considering a 10TB SATA SSD RAID0 ...

    Yes, it would likely work. Be aware that if anything goes wrong with any one of the SSD's, you will lose all of the data.

    Tim

  3. #3
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    Re: considering a 10TB SATA SSD RAID0 ...

    My guess is it will depend on what server software you are using, and what that is using for its database(s).

    User error. Please replace user and try again

  4. #4
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    Re: considering a 10TB SATA SSD RAID0 ...

    Quote Originally Posted by ocratato
    My guess is it will depend on what server software you are using, and what that is using for its database(s).
    Well, this file system won't contain any SOURCE material, only a massive (/L/D/A/P/P/E/d) cache of dynamically created web content, which comes from remote databases, and remote source content LDAPS. Think of it like a pot where I throw all the ingredients into.

    However, the main issue is, should anything go wrong, the real-time dynamic "rebuild" of that, at the current traffic levels, is basically almost impossible, however I could keep the "old, organically grown" version of it stashed somewhere, should it die suddenly.

    most of the files are 30k, 90, 150k text files, plus 2k, 20k, 200k-5MB image files, so maybe a stripe size of 256k maybe best.

    The way I would do it, is to grab say 5 or 6 current old 2TB TOSHIBA disks, move them onto the shelf as "spares", and insert the SSD's in their place with an adapter. The raid controller, although a bit old, 3Ware 9750-16i4e, does support 6Gb/s links. In fact some of the new 6TB drives on it are on 6Gb/s.
    Code:
    [root@rat bin]# ./tw_cli /c6/p40 show all
    /c6/p40 Status = OK
    /c6/p40 Model = ST6000NM0024-1HT17Z
    /c6/p40 Firmware Version = SN05
    /c6/p40 Serial = S4D0WA51
    /c6/p40 Capacity = 5.45 TB (11721045168 Blocks)
    /c6/p40 WWN = 5000c5008cded5e5
    /c6/p40 Drive Type = SATA
    /c6/p40 Interface Type = Enclosure
    /c6/p40 Drive Ports = 1
    /c6/p40 Drive Connections = 1
    /c6/p40 Reallocated Sectors = 0
    /c6/p40 Power On Hours = 15749
    /c6/p40 Temperature = 37 deg C
    /c6/p40 Spindle Speed = 7200 RPM
    /c6/p40 Link Speed Supported = 1.5Gbps, 3.0 Gbps and 6.0 Gbps
    /c6/p40 Link Speed = 6.0 Gbps
    "monsters John ... monsters from the ID..."
    "ma vule teva maar gul nol naya"

  5. #5
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    Re: considering a 10TB SATA SSD RAID0 ...

    I would be replacing some of these disks:
    Code:
    [root@rat bin]# ./tw_cli /c6/p6 show all
    /c6/p6 Status = OK
    /c6/p6 Model = TOSHIBA MG03ACA200
    /c6/p6 Firmware Version = FL1A
    /c6/p6 Serial = 53ICK9F1F
    /c6/p6 Capacity = 1.82 TB (3907029168 Blocks)
    /c6/p6 WWN = 50000394cbc814ea
    /c6/p6 Drive Type = SATA
    /c6/p6 Interface Type = Direct
    /c6/p6 Drive Ports = 1
    /c6/p6 Drive Connections = 1
    /c6/p6 Reallocated Sectors = 0
    /c6/p6 Power On Hours = 41653
    /c6/p6 Temperature = 33 deg C
    /c6/p6 Spindle Speed = 7200 RPM
    /c6/p6 Link Speed Supported = 1.5Gbps, 3.0 Gbps and 6.0 Gbps
    /c6/p6 Link Speed = 6.0 Gbps
    "monsters John ... monsters from the ID..."
    "ma vule teva maar gul nol naya"

  6. #6
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    Re: considering a 10TB SATA SSD RAID0 ...

    Basically, what I am trying to FREE UP is the bottleneck here:
    Click image for larger version. 

Name:	RAID10_rat_Screenshot_2018-06-29_18-02-35.png 
Views:	10 
Size:	4.6 KB 
ID:	29692

    Now that's some trafico on those 2 RAID10 partitions. Plus the drives in partition sdb all have 40,000 hours running, and the ones on sdi about 18000.
    Dunno how much more punishment those things will take lol.
    /c6/p0 Power On Hours = 41321
    /c6/p1 Power On Hours = 41327
    /c6/p2 Power On Hours = 41690
    /c6/p3 Power On Hours = 41692
    /c6/p4 Power On Hours = 41701
    /c6/p5 Power On Hours = 41701
    /c6/p6 Power On Hours = 41699
    /c6/p7 Power On Hours = 41705
    /c6/p8 Power On Hours = 41621
    /c6/p9 Power On Hours = 17653
    /c6/p10 Power On Hours = 41700
    /c6/p11 Power On Hours = 41700
    /c6/p12 Power On Hours = 41687
    /c6/p13 Power On Hours = 41687
    /c6/p14 Power On Hours = 41693
    /c6/p15 Power On Hours = 41693

    pretty good averages though, only one failed after 20,000 hours and was replaced. (good old Toshibas)
    Last edited by bobx001; 29th June 2018 at 05:24 PM.
    "monsters John ... monsters from the ID..."
    "ma vule teva maar gul nol naya"

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