Questions tagged [sas]

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 workstations, and it uses the standard SCSI command set.

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Connecting Dell R430 to HP StorageWorks MSA60 Storage Array?

I have a R430 1U server, and I'd like to expand it's storage past the available drives with a MSA60 due to the low cost. I'm wondering if all I need is a PCI-E SAS Controller for the R430, and then ...
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mix SAS and SATA HDDs in RAID 0

Specs for some RAID controllers (for instance LSI 9261-8i) say that it's possible to mix SAS and SATA disks in the same RAID array but such practice is discouraged (but without explanations why). ...
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Can an HP Storageworks D2700 chassis be used with a non-HP HBA or RAID card?

I just purchased a pair of used D2700 units fully populated with disks, and was expecting to be able to hook them up to an existing system with a basic LSI SAS controller. However, while the ...
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37 views

Legacy SAS HDDs with no access to erase the data on them

I need to erase then recycle a bunch of SAS HDDs. They are from servers (I removed from a local ISP for a client) that require 20 amp power, which my house doesn't have, so I can't just erase them in ...
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CentOS Multipath using SAS Disks and Multiple Hosts

===========System Design=========== Server A --> 2 PCI LSI HBA Cards Server B --> 2 PCI LSI HBA Cards 8 x SAS Disk Shelf --> Dual SAS Controller 12 Slot Disk Shelf 96 Disks all SAS Seagate ...
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Failed to start operation (initialize raid conf.) on Virtual Drive - IBM x3400 M3 (LSI M1015)

I have an IBM machine SystemX 3400 M3 with SAS controller M1015. enter image description here enter image description here I am trying to change HDD. My new HDDs areof 3Tb each and their model is the ...
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273 views

Maximum write speed of HP Ultrium 1760 drive

The write speed of the HP Ultrium 1760 drive is specified as 120MB/s with LTO-4 media and 80MB/s with LTO-3 media. However I get half of that - 80/40 MB/s respectively. The connector is SFF-8482 at ...
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79 views

Does IO performance degrade when a SAS SSD is attached with redundancy?

I have some Seagate Nytro SSDs (model xs800le70004), SuperMicro SAS3 JBODs (2C models with redundancy), LSI 9300 SAS3 Cards, and SAS HD Cables (SFF-8644). When the SSDs are attached with both primary ...
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Can SAS expanders from the same HBA/RAID card be cross-linked?

I am building a 24-drive storage server using an existing 8-port SAS RAID controller and a chassis with passive backplanes, which means I need expanders. Currently I am using the HP 36-port expander ...
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SAS drives not getting detected + orange light

I am using a HP Proliant server with the original hard drives. They have worked before. I had it powered off for like two weeks. After trying to power it on again, the two SAS drives had an orange ...
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Debian SAS Not Attaching As SD device (another does)

I have an x4100 with 4 drive slots 3 drives are part of the RAID 1E. On the RAID Array I have installed Debian. I am using the 4th slot for accessing file storage drives. The HP 600GB drive attaches ...
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1answer
216 views

Can I connect HP Ultrium 1760 drive to LSI Logic SAS 3041E controller using the cable on the picture

I want to connect HP StorageWorks LTO-4 Ultrium 1760 tape drive to LSI SAS 3041E controller using the cable on the photo. The cable is advertised as 0.7M Mini SFF-8482 to SAS 29P SATA . Or an adapter ...
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What will I need to create a web server out of an R710? [closed]

I recently got hold of an R710 (DELL PowerEdge) & want to use it to host multiple sites. I did not come with any HDD’s but I was told I need one with Windows Server. I currently host my sites on a ...
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What determines the Enclosure ID of a set of drives on a MegaRAID controller?

I am currently working on re-RAIDing, and while these machines should be identical from a hardware perspective, I've noticed a few discrepancies with the enclosure ID (EID) in storcli. While ...
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SuperMicro Servers can't detect ALL Disk attached to SAS

I got a used Supermicro server with no drives in it. When I plug in a SATA drive it detects it just fine but when I plug in a SAS drive BIOS not detect the SAS drive. FreeNas OS not detect SAS Storge. ...
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Sas HBA failing on most reboots but no failures while running

I recently treated myself to a new server. The case has 2 x sas backplanes with 4 x hot swap bays on each. I've been running proxmox for the month or so since I've put it together, initally using one ...
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SATA disks behind SAS expander in 2020

We all know that SATA disks behind as SAS expander was not a good idea ~10 years ago. However, I read from multiple but non-authoritative sources that many second round SAS2 expanders (ie: with ...
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Hardware compatibility: DELL PowerEdge + DELL PERC H200E + HP Ultrium 1760 LTO-4 SAS interface (or Tandberg BRSLA-0704-DC SAS)

I have a question about compatibility: DELL PowerEdge DELL PERC H200E HP Ultrium 1760 LTO-4 SAS interface and/or Tandberg Data BRSLA-0704-DC LTO4 SAS (LTO drivers) It should be assumed that the ...
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376 views

Tape drive Connectivity - Fiber channel Vs SAS

We want to change our tape backup system and acquire a LTO8 tape drive. Something that I cannot find the answer easily is what are the pro&con of the connectivty by Fiber channel or SAS. For the ...
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Fujitsu D2616 Raid Card Lsi Mega Raid Enable Ports

I have a Fujitsu server with D2616 raid contorller, this has 2 mini SAS ports on it with one connecting into a backpane where i have 4 hdd plugged in. This works fine however wanted some SSD's in ...
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Mac - Thunderbolt eGPU + PCIe SAS card for LTO tape drive (SAS card compatibility)

I'm looking for open minded person who can answer my unusual question that might defy logic at first glance but might be valid. Recently I got need for reading LTO tapes that act as archive. I would ...
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301 views

HP Server, HP Drives but no drives detected

HP ProLiant ML350P G8 with 6 HP 2TB 7.2 RPM SAS drives and a SmartArray p420i/512mb FBWC. All a recent purchase. Unfortunately it's not detecting the drives. I checked the drives for compatibility ...
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Issue with LSI SAS2116 - no drives being detected on Fedora 32 kernel 5.8.*

Last week I updated my kernel using the regular DNF update process. On reboot, none of the drives in my mdadm arrays were detected. I narrowed down the issue to a problem with the kernel and used an ...
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Failing ZFS Raid-Z2, need to build new pool but lack a SAS port. Can I disconnect one drive from Raid-Z2?

I have a Raid-Z2 pool with 6 * 4TB drives. All the drives have a bit over 40 000 hours running time. Now they all seem to be degrading at the same time. The pool is degraded, and all drives are marked ...
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How to use 12 HDDs with the Supermicro BPN-SAS3-826EL1 backplane?

I have got a chassis with the Supermicro BPN-SAS3-826EL1 backplane. This backplane allows 12 HDDs to be attached. However, I obviously haven't yet understood the cabling between the HBA and the ...
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136 views

New server has a HBA mini-sas-hd connector. How can I connect 24 disk to one raid card?

Is it possible to connect all 24 disks to one raid card ? How do I connect these physically ? Do I need an expander ? Or is it-mode flushing sufficient ? I read it-mode flushing permits up to 1024 ...
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51 views

3.5“ SAS drives in server with 2.5” bays [closed]

We recently acquired a very cheap 2nd-hand server (HP ProLiant DL380 G7). We have a number of 3.5" SAS drives, however the server only has mount points for 2.5" bays. We would still like to ...
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1answer
70 views

Setup with server and storage shelves for ~400TB on gigabit ethernet [closed]

Today i sketched out a storage setup, but since i am not very experienced with enterprise level storage, i would be very glad to have the concept reality checked by more experienced folks. ...
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How can I recover data from a five disk raid 5 on HP Proliant DL 380 [closed]

How can I recover data from a five disk RAID 5 on HP Proliant DL 380 where four of the five disks are reporting a SMART error. I have some critical data on the failed logical drive and checking online ...
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1answer
402 views

How much PCI-E bandwidth can my SAS HDD array make use of?

Note: This question is real-world, but to analyse it, please note I've begun from a "theoretical" starting point of device and bus capability, which I acknowledge will not usually be at all ...
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1answer
67 views

Replace SAS disk for HP ProLiant 380DL Raid1

I have HP Proliant Server 380DL G9 with 5 SAS disks, (2 disks for raid 1,also 2 disks raid 1 and the last one is raid 0) one of the disks in the 1st raid 1 is flashing orange, so its recommended to ...
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1answer
50 views

Disk Support HP 400 SAS controller [closed]

I receive a months ago an HP Proliant DL360 G5 with an HP Smart Array P400i Controller with 256 Mb, i have 2 sas 10k 72 Tb disk and i want to upgrade. I buyed 4 HDD SAS 10K Hitachi 450 Gb, but the ...
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Unable to write/mount disks with iscsi reservation and multipathd. Using Pacemaker and iscsi fence agent

I have two iscsi target servers in a pacemaker cluster connected to a Dell MD1200, I can get the scsi reservations recorded with the multipath.conf key configured in each server, but I can't write to ...
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1answer
191 views

RAID controller link speed with mixed drive types

What will be the negotiated speed if I mix 6 and 12gbps SATA and SAS drives in a single h/w RAID controller, but keep them in the separate raid groups? Let's take LSI (Dell PERC H730) as an example ...
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Supermicro server hangs on boot with disks in HBA

I have a "homemade" Supermicro server with an X9D board in an 836 chassis that has two SSDs with freenas installed. It has a pass-through backplane, with 4 SATA HDDs running via the Intel C606 ...
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Controlling drive LEDs on a HP DL380e G8

Having discovered ledctl via Physically Identify the failed hard drive I've been trying to use it indicate a drive to pull from an HP DL380e G8 server running Proxmox, but ledctl locate=/dev/disk/by-...
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1answer
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HP DL380p 25 sff sas expander speed

on the HP DL380p 25 disk sff version whats the sff backplane and expander speed? Reading the specs i can assume its 12g so with a controller like p830 it should be able to work at full speed. anyone ...
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671 views

SAS RAID5 Disk failure, replacement enclosure not matching

A SAS disk in RAID5 array failed yesterday and I'm about to replace it, however I noticed the front enclosure wasn't matching the rest of the disks. The array consists of 300GB 10K SAS disks with the ...
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1answer
156 views

Is the limitation of SATA attached drives on an LSI based SAS expander an ongoing issue?

In my research on developing a low-cost external drive bay for my server, I was presented with a critical issue in attaching commodity SATA drives through any SAS expander based on the LSI controller ...
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Very Low IOPs on Array of 16x 15K SAS Drives

I'm having issues with one of our servers that is running 16x 900GB 15K SAS drives in a RAID 1+0 Array on a PERC H710P, under normal load its doing ~450 IOPs (almost all writes) and has a backlog of ~...
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Multiple SAS inputs from single raid controller into expander backplane

Hello I have recently purchased a mixture of off-lease server equipment which I will be building a server for my office utilizing this equipment for business use. Some of the items I have purchased ...
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1answer
91 views

What is the difference between SFF-8482 and SFF-8082 connectors?

A popular way to connect SAS hard drives to a SAS card having SFF-8087 sockets is to use a SFF-8087 to SFF-8482 cable. One can also find on the market SFF-8087 to SFF-8082 cables, but I could find ...
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1answer
251 views

Why do internal <> external SAS expanders require a PCIe slot?

I have seen examples of home-brew NAS units that use SAS expanders plugged into a host motherboard that has neither a CPU or memory, literally for the purpose of powering the card. If the card doesn't ...
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1answer
299 views

NFS SATA vs SAS for VMware datastore? [closed]

Lately I have been seeing people online and their followers making NFS servers with SATA SSDs for VMware Datastores. This enraged me! SATA is half duplex and SAS is full. A 15k SAS at 6Gbs with a ...
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1answer
185 views

How do i get EMC hard drives to work in a Dell Poweredge R510?

Recently I have acquired a Dell Poweredge R510 12 bay LFF 2U server without any drives. I made an impulse buy for 12x 3TB hard drives because they were a great deal and i didn't think much in the way ...
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1answer
58 views

What SAS adapter is compatible with Supermicro X9DRD-iF motherboard? [closed]

Here is my motherboard https://www.supermicro.com/products/motherboard/Xeon/C600/X9DRD-iF.cfm I need a compatible adapter so I can connect 2 SAS drives to this motherboard as it does not have native ...
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1answer
296 views

How can I connect an SAS drive to a server mobo without native SAS port

Here is my motherboard https://www.supermicro.com/products/motherboard/Xeon/C600/X9DRD-iF.cfm I don't see SAS listed which is why it's not reading, or because it isn't using an SAS cable. SATA is ...
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3k views

What's the difference between 10k/15k SAS HDDs and SATA SSDs?

What is the rule of thumb in performance characteristics and differences between 10k / 15k revolutions per minute (RPM) Serial Attached Storage (SAS) hard disc drives (HDDs), versus Serial ATA (SATA) ...
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1answer
245 views

How to configure HP Smart Array P822 controller with single SAS HDD

I have SAS Seagate Exos HDD and HP P822 Smart Array controller with 2GB cache with battery backup. I don't want to create any arrays, this is supposed to be single storage HDD in my workstation. All ...
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Can we upgrade Dell's basic Server R240 (which still uses HDD 7200RPM) to an SSD?

Today I was shopping for the most basic dell rack server which is the R240. Ironically, they are still using HDD 7200 RPM, with no option for SSD in their selection; and we're approaching 2020! ...

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