SAS Storage

Feb 9, 2008

Not sure if this is beyond anyones experience here or knowledge but I thought I would give it a try here and see if I can get any insight on this.

Recently I had to work with a IBM xSeries 226 server which runs two SCSI Ultra320 drives in it at this time. I've actually purchased two extra drives for it but the distributor sent me the wrong drives for that server. Now they are saying its my fault of not proving them with more information but I think stating that I have two SCSI Ultra320 drives would be enough for them to send the right ones.

Now they sent me the IBM SAS Serial ATA SCSI drives, so I was wondering if anyone in here has enough knowledge to possibly provide me on the insight on the solution I think might be right to still use these two drives and not being stuck with a $2000 bill and two drives that I don't use.

My solution would be to buy one of the support or any Adaptec SAS Serial ATA SCSI controller cards and put it into one of the available PCIe slots and connect the drives. I've tried contacting IBM regarding this but they want $200 bucks just to say "yeah it will work or no it wont".

Logically I think it would work, the only thing I'm afraid is that let say I spend $400 - $1000 bucks on a controller card and it doesn't work they way you would think, then I'm out $3000 bucks. (drives are $2000 + $1000 for a controller card).

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Scalable Raid Storage Storage On A Budget? Also Hdd Reliability Q's

Sep 20, 2007

I'm completely torn on going the absolute budget route vs spending more for something that'll allow easy upgradeability in the future. I basically need lots of space but file sending-- media like mp3s, video, etc.

it'll be raid 5 and I'll need at least 2-3TB initially but the ability to expand would be nice.

option 1:
nice chassis with plenty of hotswap bays with sas expanders
expensive sas raid card

option 2:
cheap chassis to serve "immediate" needs and go with more later.
not sure what I'd use as a card? maybe even onboard?

regarding reliability: I once saw a database of failure rates of different models. raptor was the most reliable of the "desktop" drives. anyone have the link? I'm wondering of the seagate ES drives are worth the extra money vs the non-ES drives. they're supposedely more reliable and the "server versions" of sata drives.

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I just clicked on the Lunarpages webhosting ad at the top of this forum. Not really hunting for hosting myself but regularly suggest places to clients.

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# Unlimited Storage
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Now we know that's not possible, machines have limits right? I've seen other hosting providers offer unlimited features as well - and since all servers have limited space and bandwidth abilities how can they offer these types of services with out the FTC cracking down for false advertising?

Beyond that, I don't recommend any service that offers unrealistic plans. Am I just overreacting since it seems more and more common?

** note, this isn't an attack on Lunarpages. They were there and it made this thought pop in my head.

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May 30, 2009

I just like to thank Ryan from Aquarius Storage for helping me the other day set up my test account and test the server's loading time with my website. I now have fully transferred from my previous host, PeachyDandy, as my site loaded very slowly. I have now cancelled my account with PeachyDandy.

With Aquarius Storage my website now loads twice as fast as before. Site loading time according to Pingdom:

PeachyDandy - Average of 6 Seconds
Aquarius Storage - Average of 3 Seconds

Website - Mango Chico

Great job with the support Aquarius Storage! Moreover, the staff are very approachable and welcoming!

If you need speed, Aquarius Storage, is your hosting solution

Thumbs up Aquarius!

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I have been meaning to change hosts for a long time now but just haven't got the energy to wade through google trying to guess which have good SEO and which are the real deal.

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Im recently purchase vps from aquarius storage
[url]

im choose plan A4

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usually im bought vps need at least 24 hours cause waiting cpanel license and etc. but aquarius only need two hours

than i submit ticket to get my whm to be setup and optimize and install some software.

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i want to write this small review for Aquarius Storage i been with them a few weeks now and they are great , great prices and the best of all great support , i ran into a few issues at first , issues i could resolve my self if ihave done further reading and they were nice and help me and even pointed me into some usefull information and tutorials thats great helping customers manage their own vps insted of charging ridiculos prices for simple task like i seen in the past with other providers , keep the good work guys
my site is digitalxeon.net is still on development so there no relevant information on the site yet

thanx Aquarius Storage keep it up!

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I run several sites and all of them are hosted at invision. The main reason for having my sites hosted there is that my sites are "forum centered" and I'm very happy with the service that I have got over the last few years from them, so I don't want to change that.

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Feb 6, 2008

I setup an iSCSI target and two iSCSI initiators but I am having some trouble sharing the storage.

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Now I went to mount the iSCSI target on the second initiator, I mounted it fine, the partition I made on the first initiator was recognized on this one, however when I add files to either or, the changes aren't recognized on the other initiator. Any ideas why this might be?

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May 20, 2008

I'm searching a vps to store backups of my "primary vps".

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a nice plus would be:
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Feb 14, 2007

I'm also curious as to some suggestions on forums really geared towards server hardware discussion. if you know any good ones, please let me know

anyway, here's the situation:

I currently lease my servers. I'm planning on switching to colocation. three primary functions need to be met:

1) web server
2) mysql server
3) mass storage

I'm contemplating the best way to do this. price is a concern but I'm willing to pay more if it's warranted.

would it be a bad idea to have the mass storage and the webserver on the same machine? ie, take the web server box and just throw in a SAS/SATA RAID card and put in the extra disks. it'd obviously save in overhead costs.

if I do put them on one box, should the OS be booting from seperate physical disks from the rest of the storage?

if I don't put them on one box, ie, the web server and the storage server are seperated, what would be the ideal way to connect them? just ethernet/LAN, through a fibre connection, etc?

and that brings me to another question... why does SAS have external adapters if it's not supposed to be used to directly attach the array to more than one box? can it be used this way? is there a reason it shouldn't be?

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Oct 31, 2007

building a mass storage server, but unsure whether it is better to go for most space per system, or most space per U.

Looking at making 2 storage servers sometime in the future, one more for performance (15k 300gb SAS drives) and another for more storage (bunch of 1TB SATA drives). Both would act as iSCSI targets and likely have multiple gigabit ethernet connections bonded together.

Some options I am looking at:

1) HP DL320s provides 12 drives in 2U, or 6 drives per U. Upgrade it to 512mb batter backed cache and it does RAID6. Probably the densest storage U.

2) Supermicro has a 3U chassis that does 16 drives, or 5 1/3 drives per U. Pair that with one of the newer Areca SAS controllers and up to 2gb onboard cache and it should scream.

3) Supermicro also has a 3U chassis with 15 drives... just 5 drives per U, though it is ~$200 cheaper than the 16 bay one. Probably a mute point, since either way, it is less storage per server and less storage per U.

4) Get a simple 1-2U case and use external JBOD enclosures. Could put in multiple RAID cards, hook it up to multiple 3U 16 bay enclosures, and really squeeze in a lot of storage per server.

Anyone else been in a similar boat? Overall, not looking for a real dense configuration, with like 10-20 servers of this config, so don't *need* to squeeze in more TB per U, but it is one way that I've been looking at it.

Perhaps, in a way torn between the pre-built DL320s and the white label Supermicro approach. DL320s is a nice packaged system, support, iLO, etc. Supermicro allows more space and likely more performance (Areca likely better than the HP SmartArray), but no iLO, no single source for support, etc.

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Oct 30, 2009

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I enclosed some info from server below

root@latte [~]# stat /tmp
File: `/tmp'
Size: 81920 Blocks: 162 IO Block: 4096 directory
Device: 700h/1792d Inode: 2 Links: 4
Access: (1777/drwxrwxrwt) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2009-10-28 22:39:38.000000000 +0000
Modify: 2009-10-28 22:39:35.000000000 +0000
Change: 2009-10-28 22:39:35.000000000 +0000

root@latte [~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 143G 42G 94G 31% /
tmpfs 502M 0 502M 0% /dev/shm
/usr/tmpDSK 485M 12M 449M 3% /tmp

root@latte [~]# du -hsx /tmp
1.2M /tmp

root@latte [~]# mysqladmin variables | grep -i "log_error"
| log_error | |

root@latte [~]# find /var/lib/mysql -iname "*.err"
/var/lib/mysql/latte.quicklyweb.net.err

less /var/lib/mysql/latte.quicklyweb.net.err
091028 2:13:57 [ERROR] /usr/sbin/mysqld: Disk is full writing '/tmp/STH2JAx1' (Errcode: 28). Waiting for someone to free space... (Expect u
p to 60 secs delay for server to continue after freeing disk space)
091028 2:13:57 [ERROR] /usr/sbin/mysqld: Retry in 60 secs. Message reprinted in 600 secs
091028 2:23:57 [ERROR] /usr/sbin/mysqld: Retry in 60 secs. Message reprinted in 600 secs ....

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Jun 5, 2009

Our congregation needs webspace to archive mp3 and mp4 files of the weekly messages. Low mp3 is about 3 MB size. High mp3 is about 20 MB size. mp4 video is about 325 MB size. We would provide links to the files so they could be downloaded - no online streaming is needed. Also no normal website stuff - just file storage space and ability to download by anyone who has the URL links to the files.

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