SAS Everywhere

Serial Attached SCSI (SAS) is definitely the hottest storage technology of 2006. A SAS host adapter can connect both SAS as SATA disks, so it gives some flexibility and choice between pure performance and/or cheaper and more storage space.

Promise Technology showed the Vtrak J300s, a 12-disk JBOD system, which is an alternative for slow tape backups.

At LSI, I was shown an internal SAS RAID storage rack, but no external SAS storage rack.

What is still missing is the ability to attach a SAS RAID storage rack externally via SAS cables. Right now, you still have to use SCSI 320, which creates a bit of an overhead and limits the maximum bandwidth slightly. Or, you use iSCSI via gigabit Ethernet, but that only creates overhead, and also limits bandwidth even more (gigabit Ethernet = 125 MB/s). The third option is fibre channel, which is still quite expensive. Promise has assured SAS externally attached devices in Q4, and LSI told us that external SAS attached storage racks might be possibly ready in Q3 of this year.

Aimée Boerrigerter (Promise Technology) also drew the attention to the new hardware assisted Fastrack RAID controllers of Promise.

Supporting RAID 0, 1, 1+0, 5 and 6 (double the parity and thus, safety of RAID 5), this card allows you to use up to 16 SATA disks with only four connectors on the adapter.

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  • Genx87 - Wednesday, March 15, 2006 - link

    Itanium's marketshare is most likely at the expense of PA-RISC which is what it is replacing on the HP side.

    IBM, Dell, or Sun arent interested.
    Outside of HP, what big OEM is shipping enough Itanium machines to bother mentioning?
  • logeater - Tuesday, March 14, 2006 - link

    Here's a quick tip: Olives liven up the most jejune of pasta dishes. I prefer Spanish myself, but even Greek Kalamata can give it that zesty flavour for your next party function or Sunday dinner. Be sure to wish and thoroughly pit the brown fruit before slicing them.
  • Phiro - Tuesday, March 14, 2006 - link

    And what's with all the bagging on server virtualization? I think Anandtech's viewpoint on this is too focused on a crappy product like Microsoft's Virtual Server.

    We use ESX 2.5 from VMWare where I work, and while management is still worried enough about the risks to run tier 1 services on VMWare, we run tons of tier 2 on VMWare and most of non-Production on VMWare. VMWare is poised to reengineer our disaster recovery systems as well.

    Going down the road, the global manager in ESX 3.0 looks like an absolutely killer feature and we will definitely rearchitect our environments to take advantage of it. We're already seeing tremendous cost savings in hardware with ESX 2.5, 3.0 will only increase that margin.

    If Anandtech can't follow what the market leader in server virtualization is doing, nor are they able to get the product working correctly, they might need to take a clue from what the rest of the world is doing. Normally you guys are pretty in tune with trends - I think you're way out in the rain on this one.
  • Stolly - Wednesday, March 15, 2006 - link

    Totally agree. That assesment of virtualisation displays a lack of real world experience. We have implemented ESX at a customer who have collapsed a 40 server system in less than 10. They have some 2 node clusters with one node being real hardware and one node being inside ESX, its the hardware nodes that remain a problem. Servers inside ESX are NOT more prone to problems.

    Plus, hardware migrations are a thing of the past. Using vmotion they can move a running server from one ESX server to another with 0 downtime, the users do not even notice. A multi week phased hardware migration can now be done in minutes. Thats the power of server virtualisation, and i'm suprised that Anandtech is not conversant with the latest state of the art.
  • JustAnAverageGuy - Monday, March 13, 2006 - link

    "no less than" = "up to"

    "No less than" implies that that it is a minimum amount.

    "Up to" implies that the value given is a maximum.

    I doubt a server requires a minimum of 128GB of RAM. :)

    However, another excellent article, as always, Johan.

    - JaAG
  • DSaum - Monday, March 13, 2006 - link

    One the basis of "a few vague benchmarks", you state "Montecito is not only a vast improvement compared to Madison when it comes to running typical database applications, but also the platform has simplified quite a bit too." What happened to your objectivity? LOL

  • dexvx - Tuesday, March 14, 2006 - link

    Here's the HP briefing of the Moniceto:

    http://www.hp.sk/mediaservis/prezentacie/pdf/7_Mon...">http://www.hp.sk/mediaservis/prezentaci..._Monteci...

    But lets roll over the basics:

    Madison: 1-1.5Ghz, 32KB L1, 256KB L2D, 9MB L3
    Moniceto: Dual Core 1.6Ghz+ with HT, 32KB L1, 1MB L2I and 256KB L2D, 2x 12MB L3

    It does not take a genius to come to the conclusion that Moniceto will be a LOT more performance oriented.
  • JohanAnandtech - Tuesday, March 14, 2006 - link

    Maybe because it is very obvious? 1 MB L2 instead of 256 KB L2, two cores versus one, 4 threads versus 1...that is more than enough to call the montecito a vast improvement over Madison in database and other enterprise applications.

    Would you need benchmarks to know that a clovertown which has twice the cores of Woodcrest, but the same architecture, is a vast improvement in these kind of benches?
  • FreshPrince - Monday, March 13, 2006 - link

    imagine the fps you'd get from that beast... :D

    SAS really isn't that impressive yet...

    the enclosures I've seen are mostly 12 drive external cases...which can't do much.

    The SAS white paper I've read described a much more scalable solution, and you can't find those enclosures anywhere yet...

    I'll stick to my NexSAN SATABeast.... :D

    SCSI backplane + 42, 500GB, SATA 3.0GB/S = 21TB raw in a 4U device.

    Until they come out with something equally impressive with SAS, don't bore me anymore ;)
  • cornfedone - Monday, March 13, 2006 - link

    From the crap Asus has shipped in the past three years they can't even deliver a properly functioning mainstream mobo, let alone a high-end product. Their SLI, An8, ATI 480/580 mobos are all riddled with voltage, BIOS and memory issues that Asus can't or won't fix. Their days are numbered.

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