Tagged Questions

0
votes
2answers
88 views

Will Intel RES2CV360 SAS Port Expander Work With Adaptec 6805 RAID Controller?

Have both the expander and the RAID controller. Hooked everything together according to the docs on-line, but no drivers are seen. Can't tell if this is just a compatibility issue, or perhaps a bad ...
1
vote
0answers
39 views

SAS RAID Card not accepting disks

I have just purchased a Dell 6/IR SAS RAID card for a Dell SC1435 Poweredge Server that I bought a few months ago on eBay. When I got it, the SAS RAID card fitted (a 5/IR) was faulty and it was ...
0
votes
1answer
194 views

New HDD swap in SAS 6 ir shows it is missing?

SETUP: Dell Poweredge T410 with Windows Server 2003, SAS 6 IR Raid-1. Both the original drives were Dell Certified Seagate Barracudas for enterprise, 250gb. The new HDD is a Seagate Barracuda 500gb, ...
0
votes
2answers
236 views

No drives showing on LSI 2008 SAS + HP SAS Expander

Followin this guide http://www.servethehome.com/supermicro-x8si6-f-motherboard-review-including-onboard-lsi-sas-2008-controller/ I got myself an RPC 4224 case (They are called Inter-Tech in Europe, ...
1
vote
1answer
147 views

Can the Intel C600-series SAS controller RAID SATA drives?

(Sorry if this is off-topic - technically this is a home workstation setting, but is regarding mostly-server technology.) I have a GA-X79S-UP5-WIFI motherboard and four ST3000DM001 drives, and the ...
1
vote
1answer
410 views

RAID 10 over RAID 5 when using SSDs

I am considering implementing an iSCSI shared storage array using SATA SSDs instead of the 15k RPM SAS drives we normally purchase. We normally use RAID 10 because of spindle contention with the ...
0
votes
2answers
163 views

Preventing h/w RAID cards from dropping slow JBOD disks

I'm considering buying a used SAS h/w RAID card for externally attaching HDDs to an HP ProLiant I'm setting up. However, I only require RAID functionality on some of the drives. Theoretically it ...
2
votes
2answers
62 views

RAID Controller Link Speed

I was wondering what sequential speed should I expect from a RAID controller that has 1 x MiniSAS 6Gbps port. In the product details -> Data Transfer Rates: Up to 6Gb/s per port Does this MiniSAS ...
0
votes
1answer
123 views

Are there different kinds of Mini SAS to 4x SATA reverse breakout cables?

I have an RPC-4224 case that has 24 bays with 6 Mini SAS ports. I needed a cable to break out one of them into 4 SATA ports, so I went down to my local Fry's Electronics and bought one. The cable came ...
1
vote
1answer
99 views

Can I use an HP Smary Array SAS Controller Card In Non-HP Server? [duplicate]

Possible Duplicate: Proliant raid controller in a PC There are a bunch of cheap HP Smart Array SAS controller cards on ebay and I'm wondering if they will work with non HP servers ...
0
votes
1answer
194 views

ASUS PIKE 6480 doesn't work with debian?

I have DIYed an 1U server with [ASUS Z8NA-D6] motherboard, PIKE 6480 extended RAID card, and four SAS hard disk. And I can find this extended card's module in the linux kernel called mvsas. But fail ...
6
votes
2answers
2k views

LSI 9285-8e and Supermicro SC837E26-RJBOD1 duplicate enclosure ID and slot numbers

I am working with 2 x Supermicro SC837E26-RJBOD1 chassis connected to a single LSI 9285-8e card in a Supermicro 1U host. There are 28 drives in each chassis for a total of 56 drives in 28 RAID1 ...
0
votes
2answers
394 views

MegaRAID SAS 8208XLP

I'm just wondering whether anyone knows if I can use a Debian distro with the MegaRAID SAS 8208XLP controller. Currently at the moment LSI only supply drivers/support for RHEL/CentOS but I was ...
-1
votes
3answers
587 views

Dell R510 backplane/LSI RAID card

I've been tasked to price up and order a new server. My plans are for a Dell Poweredge R510 with the 8 HDD option, an LSI 9265-8i RAID card, two Dell 600GB 15k 3.5" SAS drives in RAID 1, and six Intel ...
-1
votes
1answer
158 views

Database server is better to have SAS than SATA, also preferable RAID1?

I want to know if it's better to hast DB server by SAS hard disk than SATA hard disk? And it's also better to use RAID1. I don't know much about RAID. If the server is RAID6 default. Can I change ...
2
votes
1answer
470 views

Where did the free space go?

I have installed CentOS 5.7 64 Bits in my server which has 4x300 GB SAS drives on hardware RAID 10. At the installation, I chose default partitions. Here are the commands output: [root@server ~]# ...
1
vote
2answers
218 views

Adding nearline SAS disks to a controller with SAS disks

I have a Dell Poweredge 840 server that currently has a pair of hot swappable 146Gb SAS disks attached to a SAS 5IR controller, configured as RAID 1. I have two spare slots to add two add more ...
4
votes
4answers
1k views

SAS Expanders for DIY JBOD Arrays

I am researching making a DIY SAS array much like the Dell MD1000. My understanding is that these devices do not contain a RAID controller, instead they present all the drives on in SAS domain to the ...
0
votes
1answer
140 views

ATTO SAS-attached RAID 5 array performance issues on Server 2003

We have an ATTO R380 SAS RAID controller in a Windows Server 2003 HP DL-160 server with 8 700GB Seagate 7200.12 drives. It's configured as a RAID 5 array. ATTO Config says all drives are healthy and ...
1
vote
3answers
514 views

SATA Raid 10 vs SAS Raid 1

I need to setup a small dedi for a few VPS. Obviously the more IO, the merrier. Given these condition, what would you choose? 2 SAS 15k disks in Raid1, or 4 SATA 7.2k in raid 10? Would the answer ...
1
vote
1answer
357 views

Replacing a PERC S300

The PERC S300 card that came with our Dell PowerEdge T110 servers is Windows only (see here). As a result, we're looking for an alternative that works under Linux. We had planned to use software RAID ...
0
votes
1answer
968 views

Dell R910 with Integrated PERC H700 Adapter

I am in the process of designing an architecture based around a single Dell R910 server running Windows Server 2008 Enterprise. I would like the server to have 8 RAID1 pairs of spinning disks, so I ...
4
votes
6answers
2k views

Use of 2.5" Laptop Drives in a Server?

We're acquiring several 1U servers with (8) 2.5" drive slots. Although we can use either SATA or SAS, there is a large price variance as soon as you order 16 or 24 of these drives, so we are looking ...
2
votes
2answers
152 views

Why is my server's SAS drive 147 GB when most are 146 GB or does that matter?

I need to replace a failed drive in my Dell server's RAID 1 configuration. I pulled the drive and it's a Hitachi Ultrastar 15000rpm / SAS 147 GB. The supplier I usually order from only has SAS 15k ...
1
vote
1answer
174 views

PERC 6i With external Enclosure Raid Questions

Okay so I am buying some used hardware on ebay and found a few poweredge servers for a good price. These servers come with a PERC 6i card and 4x 146gb internal SAS drives. I want to purchase a 8 Bay ...
4
votes
4answers
1k views

Is it normal for a SAS drive to have a few bad blocks, or should I replace my drive ASAP?

I have a drive—part of a RAID 1 mirror—that has two bad blocks. Adaptec Storage Manger e-mailed me when it detected the blocks. It shows 4 medium errors for that drive, but state is still “optimal”. ...
0
votes
1answer
458 views

System can't see ServerRAID M1015 virtual drive?

We connected the card to our system and have created a new mirror RAID 1 virtual drive, Now we want to clone our existing single drive to this new virtual drive, but our cloning software Acronis True ...
0
votes
1answer
194 views

Scale a highly transactional SQL server

I’m looking to upgrade one of my site servers. The site currently executes around 20m sql queries a day and this is growing quite fast. Right now IO throughput is a real issue, so my idea is to move ...
0
votes
4answers
148 views

Best configuration for 6x SAS 10K RPM SAS discs as virtual host

I have an IBM xSeries with 6x SAS 74.8GB 10K discs which I will use as a virtual host (either VKM, Xen or Vmware). What is the suggested best setup of these discs? I have been using raid10, but ...
1
vote
1answer
1k views

Connecting a Direct Attached Storage array to multiple servers

Is it possible to connect multiple servers to the same Direct Attached Storage array, something like the Dell MD1200 or MD1220? I see from the specs that each one of these arrays supports two ...
1
vote
2answers
1k views

SAS vs SSD Performance

Hi does anyone have any input on how a SAS 15k RPM drive would perform compared to a sata based SSD drive, assuming its using the latest verison of sata. These drives would be in a 4 drive raid 10 ...
0
votes
1answer
77 views

Are zero channel SAS RAID controllers using proprietary protocols?

I have SuperMicro server with a dead zero channel SAS raid card, that is the motherboard has two 36 pin multilane SAS connectors. What I can't figure out is: Can I just buy say an IBM ServeRAID 8X ...
2
votes
2answers
819 views

3 Gbps or 6 Gbps SAS harddrives? Does it make a difference?

Is there a real-world difference between 3 Gbps and 6 Gbps SAS drives in a server? I keep reading that harddrives don't even fully saturate 3 Gbps yet, so 6 Gbps is nothing gained. I'm using multiple ...
1
vote
3answers
460 views

SAS Drives on VMWare ESXi Installable 4.0 u2 Too Slow?

We are running a Dell PowerEdge T710 with a PERC H200 RAID controller and two mirrored SAS drives. We just patched to Update 2 because our SAS drives were extremely slow and it mentioned somewhere ...
1
vote
2answers
101 views

spontaneous hard disk password

I had an HP proliant server go down recently. All of the sudden the sas controller (e200i) would not see any of the physical disks. New disks were detected just fine. I thought it was odd that all ...
3
votes
1answer
280 views

IO/s and MB throughput for Various RAID Arrays

Are there any resources that have typical throughput and IOp/s for various RAID arrays under sequential and random patterns? In my case I am more specifically interested in at the moment: 6 Disk ...
1
vote
4answers
601 views

Stripe and block size for a RAID0 array

I'm looking for a recommendation on block size and RAID0 stripe size. We have a RAID0 array consisting of six SAS drives. The array is a workspace for SAS programs (I know, the various SAS ...
0
votes
3answers
2k views

Dell SAS 5/ir - secondary disk update “data will be lost!” - will all data, or just secondary disk?

On a Dell SAS 5/ir RAID controller, I have a RAID 1 array which is Degraded. One drive has failed. Upon replacing this drive the controller doesn't automatically resync the array. There's an ...
3
votes
1answer
174 views

Are PCIe v2 RAID controllers backward compatible with PCIe V1?

I am looking to add a PCIe V.2 RAID controller (LSI SAS 9280-4i4e) to an older Intel server (SR2500) which has PCIe V.1 slots. Does anyone have any experience with using RAID controllers designed for ...
1
vote
1answer
308 views

Is mismatched firmware on drives in a raid-6 a bad thing?

I recently expanded a raid-1 to a raid-6 with six drives. I ordered all four of the new drives from the same place, and all of them were advertised to be the same drives as the original two--Seagate ...
1
vote
2answers
1k views

What is a Linux device name for RAID of sas drives?

I have a RAID1 using Promise FastTrack TX2650 consisting of 2 SAS drives. What is a Linux device name for them? Like sda is for first sata drive. I have Windows server so I can't look it directly but ...
1
vote
1answer
622 views

External mini SAS to external mini SAS (x4 vs x8)?

I'm ordering an Enhance Tec E8 external harddrive enclosure with with a Mini SAS 8088 connector. I plan to use 8 drives in a RAID 5. The RAID Controller I'm looking at says it has 2 x4/x8 hybrid ...
1
vote
1answer
674 views

Does vmWare ESXi 4.0 U1 support the Promise SuperTrak EX8650 SATA card?

can anyone tell me if vmWare ESXi 4.0 U1 has support for the Promise SuperTrak EX8650 SATA card? In the hardware support guide I find that VmWare should have support for the Promise SuperTrak EX8650 ...
1
vote
6answers
2k views

sata and sas on the same machine

I know you can't mix SATA and SAS in the same RAID configuration, but is it possible to mount a SATA drive on the same RAID controller as its own logical drive? If not, what do I need in order to ...
2
votes
6answers
2k views

“Raid 0 SAS” versus “2nd generation SSD”

i was planning to buy a SAS system made of two 15k RPM disks in Raid 0 configuration to give a boost to my s.o. and my apps... but after i saw that article on Coding Horror, i've started to thinking ...
0
votes
2answers
1k views

Is it possible to run LSI SAS 9211-8i PCI-E 8 in PCI-E 16 Slot?

I just bought an LSI SAS 9211-8i HBA(Host bus adapter) to use with my new hardware. I realized after looking at the card that it required an x8 slot and my new mobo only x16 available. I keep on ...
1
vote
2answers
273 views

How many disks to use for eight channel RAID controller

I have a 3ware 8 channel SAS controller and a back plane extender (also 8 channel) which can take 16 drives. I will be creating a single RAID 10 volume. I know that adding more drives has positive ...
0
votes
1answer
620 views

SAS Array with or without expander

Is it better to use a SAS Expander backplane for 12 drives via one SAS connection or is it better to use a SAS backplane with 3 SAS connections? This is in terms of performance, rather than expansion. ...
1
vote
2answers
237 views

Faster to connect single/direct drive to motherboard or RAID controller?

I have a PERC 5/i RAID controller currently hosting two drives in RAID 1. I am about to add a third drive in "direct" mode, just a normal physical volume. Would performance be better if the drive is ...
2
votes
2answers
6k views

What is a RAID Controller's Sideband Cable used for?

I have some Adaptec SAS raid controllers and the fanout cable comes with an extra cable called a SideBand but I am curious what it does? I know it plugs into the backplane, but other than that I ...