Darking

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Everything posted by Darking

  1. Darking

    "best" RAID configuration?

    I will give my advice also. As kremlar says i wouldnt go for a hotspare either, you just have too few disks, and i would also go for the best practice of splitting up logs and database volume, on a database server. as i see it you have two options: 1) Go for the high capacity option, and do a 4 disk raid 5 for Data, and a 2 disk raid 1 for OS/logs 2) go for the higher speed option and do a 4 disk raid10 for data, and a 2 disk raid 1 for OS/logs And yeah.. just buy a disk to have in reserve when you dont have hotspares. I believe SQL server writes 8K pages, im sure it can be googled fairly easy.
  2. When will these tests be released? or have i just missed them
  3. Darking

    Favorite Network Switch?

    Cisco 3750 would probably be the obvious answer, but i must admit i find their whole pricing idea a bit scary, so we use HP Procurve's We use simple 2610-48PWR switches with 100mbit ports around the office, since bandwith isnt really a major requirement, when you run citrix on all your clients (we could prolly do fine with 10mbit really). For our Core Switches we use Chassis based Procurve 5412ZL. Its a nice switch, and can do alot more than is really needed in our datacenter, but it handles both ISCSI and "normal" network traffic with ease, and supports 10Ge modules. Main reason for choosing HP is Lifetime Warrenty and a more "fair" price than Cisco can deliver. Oh.. And at home i just use my Dlink DIR-655, its capable enough for Gigabit, no Jumbo Frame support tho unfortunately
  4. The only thing i have on my Intel x25-m 80 gig drive besides windows 7 and office, is World of Warcraft. And im never ever going back to running it on a harddrive. Zoning around the places takes 3-4 seconds compared to 30-60 seconds on a harddrive!
  5. Darking

    Building storage with supermicro 846TQ

    Could you perhaps explain what the problem is with your current setup atm.? you say your not running raid or anything on it, how is the data managed? SAS is about twice the speed that sata is, a decent SATA disk runs around 90 IOPS and a SAS disk can run around 180 IOPS, In RAW MB/S they probably transfer about the same, but seek latency is alot lower on SAS. I agree with you it might make sense to make smaller raid5/6 sets, mainly because if you make a 12 or 20 disk raid5 it takes way way too long to rebuild. Your probably better off making either 4 6-disk raid5's without hotspare, but i would advice you then have disks on premise in case of failure, or make 3 6-disk and 1 5-disk raid5 and have 1 hotspare available. Or just make raid 60 with your controller, if the write penalty isnt too much. Its a bit hard to give sound advice when we know so little about your enviroment and what you need really.
  6. Darking

    SAN forum

    Will do, enterprise storage solutions interrest me from a professional view much much more than gaming grade harddrives.
  7. Darking

    Building storage with supermicro 846TQ

    Are all the files accessed frequently or would it be possible for you to tier your storage? You could probably build some sort of system that would allow you to have highly accessed files on SAS and have some sort of rutine that moves less used files to a slower media type like sATA. Raid 50/60 is fine if the IO load is mostly reads, but if your very write bound i would go for raid10, but that ofcause causes you to have even less storage available pr disk. More professional arrays allow for several raid levels on each disk, making it possible to utilize the IO of a disk better, but im not sure any homebrew systems allow for that via software. Honestly i doubt your a candidate for SSD in any form, yes you could probably get some IOs from it, but i have a feeling if the amount of data written changes alot, that performance degradation would be horrific over time with non EFD drives
  8. Darking

    DIY SAN Questions

    Sorry i have to object a bit here. Im running a vmware enviroment with around 50 VMs in, and im not seeing above 500 Iops, even with SQL and exchange servers running, so claiming that VMs inheritly a big IO hogs i wont agree on. Primarily what you need is good latency and redundancy. pure IO and bandwith, less so. If your running VDI we are talking about something entirely else, exactly the same if your running multiuser enviroments like TS/Citrix I agree on alignment tho, that is always important. Both VMware and Hyper-V are running on aligned filesystems, so its mainly a raid issue.
  9. Darking

    Building storage with supermicro 846TQ

    If space is an issue i would probably go for RAID50, with 1-2 hotspares pr chassis Write penalty on Raid 6(+0) can be a bit big depending on the controller or hardware doing it. Another route would be to look into ZFS, i heard great things about it, but got no clue about how it works. I would never advice you to buy Standard drives, they arent rated for 24/7 running, and i will almost bet money on you will see a higher failure rate on them than the enterprise rated drives. More ram doesnt do stinker, unless you can use it for Cache on the controllers, and im highly doubtfull you can do that. Do you run anything that actually needs 700MB/s reads or writes?? If its simple file storage, i highly doubt your ever gonna use more than 200MB/s in any likely senario
  10. Darking

    DIY SAN Questions

    I would go for a server PSU instead of a high-end gaming PSU, they arent rated for 24/7 running, so i wouldnt trust them, i would look into a good redundant server PSU. As you said the drives need to be rated for 24/7 also. and i would look into how to secure my data from something disasterous happening, like data corruption or anything like that. Also i would look into figuring out how its supposed to be connected to the network. are you planning on running multipathed 1gig nics 4-8 ports? or are you planning on running 10GE. 10GE can be very good, but you also need to be aware of IO control, so a single VM host doesnt drag the entire SAN down with it. If you run VMware enterprise plus f.x enable I/O Control
  11. Darking

    DIY SAN Questions

    I would probably just buy a server like a Dell r610 fit it with two Perc H800 and buy the needed number of MD1200 chassis, and try and get the disks somewhere cheaply like newegg or something. Main problem will be getting the drive caddys when you dont buy the disks from dell. The major problem is reliability in cheap solutions. If you dont have every component redundant, thats where the system fails (and thats typically why enterprise storage costs a premium). in Enterprise SANs every component should be redudant, from storage controllers, to chassis interfaces, to the switches and HBA/NICs. Im sure there are cheaper ways from something like supermicro or something, but dont expect to build 2x12 disks for anything under 10k$
  12. Darking

    DIY SAN Questions

    The major problem giving advice, especially about stuff like IO (which you need) is that 15-30VMs could mean anything from 30 servers doing absolutely nothing, to 15 large enterpise SQL servers or Exchange. running thousand of IO/s. basically size, spindle count etc, all needs to be compared to the performance requirements you have, and when you have those two kind of information, you pretty much know what you need, and can build a system from that knowledge.b
  13. Darking

    Intel G3 and Sandforce F2000...

    We are 13 days into the year, give them a bit of time, Q1 is until March
  14. The PERC is a LSI Megaraid controller. Its using LSI 2108 ROC which 9260 8i cards also use.. I see no reason why there shouldnt be a fastpath option.
  15. Darking

    Best drive for WHS box

    Ive not had any trouble with my WD15EARS drives, so i dont see why the 2TB drives should be any different. samsung drives generally run at a lower heat level tho
  16. Darking

    Win2K3 Server And Wd20Ears

    To give an reply to why WHS does not support EARS drives without the jumper, its simply a matter of the Align util used not to run on WHS, since it doesnt recognize it as win xp, and i think the issue is the same for 2k3. Personally i use a WD15EARS in my whs without issue with the jumper. It may be possible to align it according to http://forum.wegotserved.com/index.php/topic/14632-wd-ears-align-ok-on-whs/ but i must admit i have not personally tried it. (i guess they fixed something in the utility)
  17. Darking

    Wine of the week.

    Generally i kind of like the heavier red wines, but thats mostly because i normally only drink red wine to stuff like Steaks... The Ripasso and Amarone type of red wines are my personal favorites. Here in denmark they go from anywhere between 10 - 20$ for the 3-4 year stuff.
  18. Darking

    10 Second Windows 7 Boot

    Its not really clearly defined what the rules are here.. After bios splash screen, my machine boots in somewhere between 8.5 and 9 seconds to login in windows. This is a Core I-7 875K with 4 gigs of ram, and a 2nd gen Intel X25-M disk If Splashscreen and expressgate from bios needs to be counted with.. i would say my time is probably 20... but then.. what about people with a motherboard that checks memory before boot ;-) Ive even included a video, recorded from press of button to windows login.
  19. Hi All. We are a medium sized company running a host of different software solutions: Sharepoint MSSQL Exchange Windows File servers Webservers Vmware ESXi 4.1 also some Oracle hosted on Linux. we are sort of considering insourcing our backup solution again, and are now in the market for a backup solution including storage, that would allow us to do around 5TB of backup of different systems in a full backup. Currently our backup is done as an Outsourced TSM solution, and it works great, but the size of our data is making it a bit costly. I have used Backup exec 10 before, and always felt it was prone to unstability and that you could not be sure that backups had completed successfully, something we generally do not see in our TSM solution. Are there similar priced solutions you could recommend? Do any of you have any recommendations to Storage of backup.. is Disk an ok solution to keep data "forever" (backups should be kept 5 years in a grandfather-father-son kind of rotation) or is the safe solution to go with some LTO-5 tapes in an library, and is it safe to keep tapes forever in a library or should the be vaulted to somewhere other than the backup location? Both in the disk or tape solution the backup would be performed over a 1gbit fiber connection, to a remote site, away from the primary site of the live data. Regards Darking
  20. Darking

    Great Site!

    Im note certain you have AHCI enabled in your bios. Alternatively you can try and update the driver to your sata controller. what sort of computer or motherboard are you using?
  21. Darking

    48 tb server help

    Stop thinking of raid with that data size.. use WHS and duplicate the shares you need to be secured on more than one disk (data you cant afford to loose by disk failure). if Data integrity is more important than that buy two boxes ;-)
  22. Darking

    Great Site!

    Most likely its just that your machine, either dont have AHCI enabled, or that your using some sort of older nforce chipset, where windows decides the devices are SCSI (raid controllers have a tendency to do this). It can be determined pretty fast by looking at the name of the disk in your device manager. If its named something with SCSI in the name, there's your fault. On windows 7 with AHCI enabled, a Intel 2nd gen drive is labled= 'INTEL SSDSA2M080G2GC' (in my case its a 2nd gen 80 GB SSD)
  23. Hi. Im trying to track down what type of drive is used in the Dell Equallogic PS 6000s 16 SSD ISCSI array? All i can see in information is that its 100GB, wich is a bit unusual size for most vendors. i assume it might be a drive thats formatted short of full capacity to optimize wearleveling a bit.
  24. Darking

    SSDs in equallogic PS6000S boxes

    Will do if we end up buying it.