The sas tag has no wiki summary.
3
votes
1answer
37 views
SSD in early 2008 Xserve Apple Drive Module
Pretty much the title: it possible to use a modern, 2.5″ SSD in an Apple Drive Module on a early 2008 Xserve? This would be replacing a 15k RPM SAS drive, and in most places I've looked that HDD is ...
1
vote
4answers
83 views
7.2K Near Line SAS with Large RAID Controller Cache vs 10/15K SAS
I'm working on an application to capture a lot (10 million +) of really small blocks of data (16 bytes) every day. The data is not sequential (i.e lots of seeking about to write) and it's not a ...
-1
votes
1answer
52 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
3answers
50 views
What's the relation between “HP Diagnostics” the “Array Config Utility” and “Windows Disk Manager”
I have a failed drive that is reported in HP Diagnostics
https://localhost:2381/hpdiags/frontend2/frontend.php?
It tells me that Logical Drive 5 has a drive that is about to fail. The name of ...
1
vote
1answer
71 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
99 views
Dell MD3000, MD1000 and 2950
I have a Dell 2950 with MD3000, MD1000 ; Suddenly the I have lost all drives on both of the enclosures and all drives on the MD3000/1000 are blinking, but only ONE Light on each disk, not 2 Lights.
I ...
3
votes
1answer
93 views
External SAS cable or adaptor with 90 degree plug
We have an HP tape autochanger mounted in a rack, but it's so deep that with the external mini-SAS cable plugged in we cannot close the rear rack door - if we did we'd crush the SAS cable well beyond ...
0
votes
2answers
50 views
Which SAS Cable is required for to connect SAS drive to RAID controller
I have two 2.5" SAS drives which have a SFF-8482 connector. I also have an LSI 9211-8i controller card, as well as a TYAN motherboard with a SAS controller. Both of these controllers use the SFF-8087 ...
1
vote
2answers
54 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 ...
0
votes
1answer
62 views
Dedicated server - do SAS disks make a noticeable difference? [closed]
Possible Duplicate:
What are the merits of SAS vs SATA drives?
I am running a linux centos dedicated server. Basic specs are a Intel Dual Core Xeon X3065with 2GB ram and 2 x 160GB Sata ...
4
votes
4answers
131 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 ...
8
votes
2answers
133 views
Are branded backplanes useable without specific controllers?
I can't find a disk enclosure which I like, so I'm going to build a custom one (if nothing else, that'll teach me to be picky...). I've got a few HP SAS backplanes lying about, but I'm wondering if ...
0
votes
2answers
35 views
HP P411 Storage Controller not recognized during boot
it's me again :( I've asked a question here a few minutes ago ( HP B110i controller not seeing storage array. Any ideas? )
Turns out I was wrong, and there IS a P411 controller built in, I verified ...
0
votes
2answers
75 views
HP B110i controller not seeing storage array. Any ideas?
We got a new HP ProLiant DL160G6 with internal P410 SAS controller, and an additional B110i SAS controller with external ports that is supposed to connect to the HP Storageworks D2600 Drive Array we ...
1
vote
3answers
86 views
So you really can push a SATA2 disk into a SAS backplane?
There's only one SAS, right? Serial attached SCSI?
The female connectors:
SATA2 looks like: ------------| |-------
And SAS looks : ------------+-+-------
For me, the SATA2 male connector looks ...
0
votes
1answer
38 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
votes
1answer
42 views
IBM EXP3000 SAS rack
A couple of weeks ago one of my EXP3000 SAS Racks was not found by the server. Also, all the Amber fault LED lit, on every disk.
Today, this also happened on my other EXP3000 after a reboot - Could ...
0
votes
2answers
110 views
Rule of thumb: SATA for storage & serving static content, SSD/SAS for databases?
The question says it all. But, is it true? Can someone explain what's the differentiating factor here (how one type of disk is better than another for a specific purpose)?
(FYI, I've tried searching, ...
1
vote
3answers
101 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
2answers
89 views
Can we “add” more SAS ports to an existing backplane?
We have a 3U Supermicro chassis with 16 bays on a SAS expander backplane. We have 15 of the bays occupied with hard drives at the moment. We would like to add two more drives to the backplane, but we ...
2
votes
2answers
249 views
SAS drive to SAS/SATA backplane then SATA cables to SAS/SATA RAID card?
I just got a Supermicro chasis:
http://www.newegg.com/Product/Product.aspx?Item=N82E16816101241
That has a backplane that supports SAS and SATA drives but the backplane has SATA ports to be ...
2
votes
1answer
135 views
Linux Multipath + SAS Array, “device errors” are logged to dmesg for passive paths? Possible to stop this?
I have two OpenSuSE 11.4 hosts connected to an LSI CTS2600 storage array via SAS. Every time I reboot the hosts, I see in dmesg output like
[ 255.942890] end_request: I/O error, dev sdg, sector ...
0
votes
0answers
44 views
SAS controller wont recognize 3.5 drives
I have put a SAS controller ( RocketRAID 2642 ) in a Dell PowerEdge T100. I need to read some Maxtor Atlas 3.5" drives as JBOD.
The drives will not recognize in the controllers BIOS and therefore ...
1
vote
1answer
142 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 ...
1
vote
1answer
79 views
HP P410i as online spare
Is it possible to have dual P410i SAS controllers and use one for a online spare? I am fairly new to HP servers and I will be setting up a new G7 for production use.
I have been reading about HP's ...
0
votes
1answer
332 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 ...
1
vote
2answers
163 views
Using an SAS Expander with a SAS Controller of a different brand
I'm planning on assembling a server, and I'm just wondering if a SAS expander by IBM (such as this one) would allow me to use the RAID and other features (Battery-backed write-back caching) of a SAS ...
2
votes
6answers
622 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
4answers
712 views
SAS or SATA for 3 TB drives?
We are looking to purchase new 3 TB enterprise-grade drives and can buy either SAS or SATA models.
AFAIK, SAS generally gives better performance than SATA, but searching for benchmarks I found ...
2
votes
1answer
466 views
Are 6Gb/s SAS drives compatible with 3Gb/s SAS interfaces?
Are SAS 3Gb/s controllers (SAS1) forward compatible with newer SAS2 drives specified at 6Gb/s? The controller I have in mind is an LSI SAS1064. I know that SAS2 controllers are backwards compatible ...
2
votes
1answer
117 views
How can I enumerate SAS addresses/WWNs in Linux?
I have some SAS devices in a server, I would like to find out what their SAS addresses are. How can I do that in Linux? I'm using CentOS 6.
1
vote
2answers
86 views
When ordering SAS replacement drive, does the hot swappable enclosure matter?
I have a dell PowerEdge and need to replace one of the SAS drives in it. I noticed the supplier I order from does not sell a specific "DELL" SAS replacement drive, but they have what appear to be ...
2
votes
2answers
91 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 ...
12
votes
5answers
788 views
Anyone seen a meaningful SAS vs SATA comparison/benchmark?
I hear lots about SATA being slower than SAS but I've only found 1 decent benchmark.
http://blog.whitesites.com/SAS-RAID-0-VS-SCSI-RAID-0-VS-SATA-Benchmarks__633689244191943184_blog.htm
In this, SAS ...
1
vote
1answer
102 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 ...
2
votes
2answers
496 views
How do I power SATA drives in my DELL poweredge 2850?
I have a Dell 2850 which I've been fairly happy with. It runs RAID 5 to 6 Hot-swap SCSI drives, but I'd like to add some cheap storage. So I bought an Intel PCI-X SATA raid card and tried to install ...
2
votes
3answers
219 views
SAS vs SAS2 interface
I´m pretty new to this server environment and I´m looking to expand the capacity of our HP Proliant DL385 G2 server. I want to replace the 146 GB disks with 300 GB disks.
My question is:
Can I use a ...
1
vote
0answers
144 views
LSI 9211-8i won't boot in KVM
I'm running ubuntu 11.04 with an LSI 9211-8i in IT mode with the latest firmware (10). I'm using KVM with VT-d enabled to pass the entire PCIe device through to the guest OS. I have the device ...
0
votes
1answer
142 views
SSD Performance for PHP?
My programmer just built an application with PHP using Doctrine ORM (will be a high traffic social networking website), and it's very heavy in PHP/Apache and CPU. The queries are wonderfully fast, and ...
1
vote
1answer
264 views
Connecting SAS tape unit to existing P410 controller in HP Proliant ML330-G6 under VMware ESXi 4.1
I have an HP ML330-G6 server with a single SAS/SATA drive bay unit containing a pair of mirrored 250GB SATA disks, running off a P410 SAS controller - all working fine. Now I have just fitted an ...
1
vote
2answers
152 views
Shrink an HP Smart Array on a P400
I just started consulting for a new client and one of 6 hard drives in their server's SAS array failed. Going over the options of replacing the drive, they didn't like the thought of spending about ...
2
votes
3answers
247 views
Linux / Multipath not using all paths, and won't use queue-length path_selector?
I have the following hardware:
2x SuperMicro servers (128GB RAM, 2x 8 core AMDs)
2x/server LSI SAS2008 PCIe MPT-Fusion2 HBAs (2 SAS ports per card)
1x LSI CTS2600 DAS with 24x W.D. 15.7k RPM 600GB ...
0
votes
1answer
210 views
Solaris 11 not seeing all SAS disks on HP P212 controller
I've got an HP X1600 with Solaris 11 installed on it. It's got a P212 SAS controller with a single external port.
I've got 2x 10k 2.5" SAS drives installed and configured as RAID 1 on the controller ...
4
votes
4answers
367 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”.
...
2
votes
1answer
152 views
lsscsi finds sas device but none is listed in /dev
I have a server with 2 internal disks with Adaptec hardware RAID and an external disk box connected via SAS.
lsscsi finds all the devices:
# lsscsi
[0:0:0:0] disk Adaptec System ...
1
vote
1answer
220 views
Can I connect a SATA III drive to a SAS controller and get the SATA III performance?
Can I connect a SATA III drive to a SAS controller and get the SATA III performance? Will I see slower performance from the SATA III drive by using a SAS controller than a SATA III controller?
1
vote
0answers
56 views
SUN x4600 SAS disk seems to be verry slow
I'm using SUN x4600 with 64GB ram and 2 SAS 146GB 10krpm with Solaris 10
One told me, that the system seems to be slow, so I did a
iostat -xtc 5 2
which showed for a long period of time only 4-6000 ...
3
votes
1answer
175 views
Nearline SAS on SATA controllers
I know that SAS drives cannot operate on a SATA controller.
I know that SATA drives can operate on a SAS controller.
But can Near-Line SAS drives, being SATA drives with a SAS controller, be used on
...
0
votes
1answer
238 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 ...
1
vote
1answer
327 views
Adaptec 1405 or HP SmartArray P212 SAS controller supported in the stock RH 5.5 kernel?
I am ordering a custom server and looking at either an Adaptec 1405 SAS controller, or an HP SmartArray P212 to use for the internal SAS Ultrium drive (HP Ultrium LTO-4 1760).
The server will be ...
