Tagged Questions

Serial Attached SCSI (SAS) is a computer bus used to move data to and from computer storage devices such as hard drives and tape drives. SAS depends on a point-to-point serial protocol that replaces the parallel SCSI bus technology that first appeared in the mid 1980s in data centers and ...

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1answer
603 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
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1answer
693 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 ...
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1answer
2k views

HP Autoloader mount, ESXi 4.1 through SAS - will it work?

I need to figure out if I can get this to work. I have a HP P2000 Storage system, connected to 2 x HP DL360 G7 through SAS. Then I got an HP Autoloader with connected through SAS too. Will I, in ...
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1answer
229 views

Read LUN from dell SAN with a PC on linux

We are currently using a md3000i DELL SAN server with a RAID1. I would like to access the information on one disk from a workstation. The hard disk contains 2 LUN but I can only access the first ...
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0answers
818 views

SAS vs SATA vs SSD: How to measure performance difference between SATA and SAS?

SAS drives can address multiple IO operations from a single platter revolution if the data happens to be where the head is already positioned. How can you measure whether this actually makes a ...
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2answers
118 views

LiveLinux PPC variant to boot and perform dd on SAS drive?

Ok here's the deal. In trying to install SLES 11, partd says it cannot read the partitioning on my SAS disk. Specifically I can reuse the existing AIX partition table but not edit it. The drive is SAS ...
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5answers
2k views

How should I sanitize a SAS drive that I removed from a RAID 5 Array?

I had a disk experience a predictive failure. As a result, I removed the drive and replaced it. Now that I have the drive removed, I would like to sanitize it. What is the easiest way to go about ...
2
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3answers
125 views

Plug in 6+ drives into a server (iSCSI/SAS expanders/SAN)

The company where I work has started to run out of disk space at 2.3TB. Originally it was a JBOD of a 1.5TB drive and a 1TB drive as a quick fix measure (yes I know this is bad, that's why I'm ...
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1answer
197 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 ...
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1answer
892 views

Does the PERC 5/i Integrated controller support SATA II/III?

I have a refurb 2950 with a PERC 5/i Integrated controller. Currently, there are 4x 3.5" SAS drives in use, with two slots available. I want to add two SSDs (using a 3.5" ICY dock) in RAID1 in the ...
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2answers
436 views

SAS HBA and P2000 SAS controllers speed

I have HP SC08Ge HBAs and P2000 G3 solution (RAID6, 8+2 spare disks) working on XenServer 5.6.0 . What seems to be strange, is the speed - 35MB/s maximum in one VM (Squeeze). Is it normal or I have to ...
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4answers
173 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 ...
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1answer
2k 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 ...
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3answers
577 views

Migrate zpool to new SAS controller

Long ago, we bought an Adaptec 31605 under the impression that: a) it could do true JBOD, and b) it was well supported on OpenSolaris. Turns out both of these were incorrect. I'm trying to get my ...
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2answers
401 views

Replace E200i with P800 or use both?

I'm managing a HP ML 350 G5 machine. It has a SAS controller(E200i) with two ports. Port 1 is attached to 4 drive bays and Port 2 also. Now we have bought a P800 Controller to improve performance. I'm ...
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1answer
596 views

Install SAS/SATA backplane in Dell PowerVault 220S

Is the backplane of a Dell PowerVault 220S svc tag 3sdpcb1 (14 drive, 80 pin hot swap scsi) upgradeable to a SAS/SATA backplane & controller card replacement? The unit already seems to be quite ...
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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 ...
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3answers
306 views

Hard Drive Partitions for SAS Drives

We have a Dell server with 3 300GB SAS Drives that are combined as a single drive with two partitions. The partition the OS is on is only 12 GB while the remaining space is on the other partition. We ...
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2answers
697 views

SATA SSD in Dell Server

I have a Dell R815 (PDF LINK), which has 6 2.5" bays. I would like to put some Intel X25-E in the spare bays, but have been cautioned that they may not fit since they are SATA and the bays are ...
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10answers
21k views

Cheapest way to connect 20-24 Sata II HDDs in a budget storage server? [closed]

I need to assemble a high density storage server for as cheap as possible. It's been a while for me and the last systems I integrated didn't even have Sata yet... During my Research I of course ...
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1answer
500 views

SAN connected through SAS with SATA disk

let's have P2000 G3 with SAS Dual Controller and DL120 G6 with HP SCO3e SAS HBA cards. 1) I know it's bit dumb question, but just to be sure. The array will be filled by SATA disks. Will be the SAS ...
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3answers
3k views

Disk names in Solaris 10 for ZFS: SAS WWN instead of c0t0d0

I currently have a server running Solaris 10u9 with a SAS enclosure (Dell PowerVault MD1000) filled with SATA disks attached to an SAS card (LSI 3801E). It happily recognizes the 15 disks in the ...
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1answer
1k views

IBM System x3500 M3 refuses to boot from LSI SAS card if blank SATA drive is connected on mainboard

Have an IBM System x3500 M3 that refuses to boot from the IBM branded LSI SAS card if any SATA drive is also connected to the mainboard. The system restarts itself over and over. No error messages. ...
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4answers
3k views

Will any SAS drive work in a Dell PowerEdge server?

If I bought a Dell 2950 or 2650, for example, and it has no drives in it (from say an auction). Will any SAS drive I get work in it? I ask because they vary so much in price. Some drives are $150 ...
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2answers
1k views

Need help finding a SAS HBA controller for an IBM LTO 4 Tape Drive

I've got an older IBM x3200 M2 Server (MT: 4368) and I recently acquired a used internal IBM LTO 4 tape drive (FRU: 45E1125). The back of the tape drive requires an Internal SAS 29 pin connector ...
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1answer
2k views

Recovering data from SAS drives after failed SAS Controller Card?

The SAS Controller Card in a production server of ours went bad. This was an older server, and Dell does not have the card in stock and not ETA for one. So, I ordered one from NewEgg. I installed the ...
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4answers
395 views

Do I have to buy a SAS hd from Dell to work with a PERC 5 in PE1950

Is it true that for SAS hd to work with a PERC 5 controller it must have a special firmware on it put in by Dell which forces you to buy a hd only from them. The hd that came with the server is a ...
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1answer
83 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 ...
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votes
2answers
1k views

Can I get redundancy with a JBOD storage subsystem

I have a Promise Technology J610S. This is a JBOD subsystem. Is it possible for me to buy a SAS hardware RAID controller and provide some type of redundancy for these drives? I am unsure whether I ...
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2answers
656 views

is it possible to direct connect a client and server with 10GBASE CX4 copper cables?

Server has two 10GBASE-CX4 ports. client has 10GBASE CX4 HBA. can theybe directly connected with a CX4 cable without the need for a switch? like SAS Infiband connectors?
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2answers
999 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 ...
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5answers
344 views

HA Cluster having tower 4U server with SAS

I'm a little bit confused in here.. I want to have 2 node cluster with shared storage. I read all wiki page about HA cluster. Now in my head there's a scheme like: So we have two 4U tower servers ...
1
vote
1answer
477 views

PCI-E HBA on only PCI-E x16 slot on motherboard?

I read a post maybe last week that said you can't put a HBA card on the only x16 slot on motherboard that doesn't have onboard video. Is there any truth to this? I have a Gigabyte GA-965P-DS3/e6400 ...
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2answers
107 views

SAS, RPM, & Bus Speeds

I am working on spec'ing out a new Hyper-V server, and I am running into something that I find confusing--I have the following choices: 146GB 15k RPM, SAS, 3Gbps, 3.5" 146GB 10k RPM, SAS, 6Gbps, 2.5" ...
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4answers
3k views

HP smart array P812i and storage works enclosure D2700 BAD PERFORMANCE!

I have HP DL360 G6 with Smart Array P812i and Storage Works D2700 enclosure. Enclosure has 25x148GB 15K SAS 6G drives in RAID10 mode. P812i has 512mb cache (50% read/50% write) Crystal Disk mark ...
3
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1answer
2k views

What is the difference between NHS, HS and Slim-HS SAS Drives?

I am curious to what is the practical difference, if any to the following: IBM 300 GB 10K 6 Gbps SAS 2.5" SFF Slim-HS HDD 42D0637 IBM 300 GB 10K 6 Gbps SAS 2.5" SFF HS HDD 42D0612 ...
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3answers
299 views

Type of Storage for VMware View Implementation

We're doing a virtual desktop pilot and I was wondering what kind of SAN storage is commonly used. I've heard conflicting reports of SAS/SATA disks or even SSD or large read/write cache settings. ...
6
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8answers
2k views

What are SAS external storage options (Promise, Infortrend, SuperMircro, …)?

We are looking for a ~32T external storage solution for two 48-core AMD servers. These will be used for a small Linux OpenVZ cloud for CPU intensive web-servers and data warehousing. Dual path with ...
0
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1answer
670 views

How many servers can connect to a SAS RAID without a SAS switch?

If we buy a Promise VTrak E610sD SAS Raid shelf and daisy-chain Promise VTrak J610sD SAS JBOD shelves to the Raid shelf How many Linux servers with SAS HBA cards can get access to this setup ...
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3answers
507 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 ...
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3answers
28k views

SAS vs. Nearline/MDL SAS - What is the difference?

As subject I guess, looking at SAN's and most vendors offer 10k or 15k "proper" SAS drives, many also offer 7.2k MDL/Nearline SAS drives. Does anyone have an authoritative explanation of the ...
2
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5answers
119 views

source for enterprise disks [closed]

whats your source for scsi/sas disks - to replace breakage or expand existing systems? the usual suspects (newegg, pricewatch, ZZF) seem to have limited selection.
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2answers
108 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
288 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 ...
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2answers
2k views

SSD seems dead after wakeup from Windows Sleep, BIOS stalls but doesn't find it anymore

The morning, the following scary scenario happened: I woke up my Windows system Typed in my username and got an error (something like "could not load security xxx", but unsure of exact wording) ...
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2answers
5k views

SAS to SATA adapter?

Is it possible to have a SAS to SATA. e.g the server has SAS onboard, and I want to use SATA drives instead of the SAS ones (cheaper and easier to source here in Australia). They have cables on this ...
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vote
4answers
661 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
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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
222 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
365 views

HP DL180 and External SAS Tape Backup Drive

Is is possible to use the following PCI-E card with a HP DL180 server (specifically the 487507-371 model) - HP 4x Internal/4x External SAS PCI-E Adapter (416096-B2). If not what are the options for ...