MSRP/List DELL SKU DESCRIPTION Price – ——– ———– ——— A0381892 [***] [***] A0131062 [***] [***] A0119474 [***] [***] A0119473 [***] [***] A0119472 [***] [***] A0146647 [***] [***] A0146646 [***] [***] A0143088 [***] [***] A0423903 [***] …

[***] INDICATES THAT TEXT HAS BEEN OMITTED WHICH IS THE SUBJECT OF ACONFIDENTIAL TREATMENT REQUEST. THIS TEXT HAS BEEN FILED SEPARATELY WITH THESEC. EXHIBIT 10.23 COMMVAULT SYSTEMS RESELLER AGREEMENTThis Reseller Agreement is made as of the effective Date set forth below,between CommVault Systems, 2 Crescent Place, Oceanport, New Jersey 07757(“CommVault”) and Dell Inc, (“Reseller”).This agreement is entered into April 6, 2005.WHEREAS, CommVault is engaged in the business of providing data storageproducts.WHEREAS, Reseller is a provider of information management solutions who wishesto purchase software products from CommVault for the purposes of resale withother products or services to customer in accordance with valid purchase orders.THEREFORE, the parties agree as follows: 1. Price: Reseller receives a [***] discount on the MSRP of the SW. Reseller shall provide CommVault with an applicable tax exemption certificate. Reseller has the unrestricted right to determine the prices at which it resells any Product to its customers. No CommVault representative has the authority to suggest that Reseller charge a particular resale price for any product. 2. Purchase Orders: Reseller shall place purchase orders for software identified in exhibit 1 with CommVault through the Dell 3GFX order process. CommVault will accept or reject orders directly through the 3GFX system. 3. Payment: CommVault will electronically invoice Reseller through the 3DFX process and payment for Products, including any authorized partial shipments, shall be due in [***] from the date that Dell receives the invoice. 4. Rebate: CommVault will rebate the Reseller on select orders in the amount of [***] of the net S&P Software (SW licensing only). [***]. 5. Timeframe: This agreement will be in force from Feb 1, 2005 through July 31, 2005. This agreement will be re-evaluated after each Dell Fiscal quarter and any changes will be made in writing and agreed to by both Dell and CommVault. 6. Territory: United States only.This agreement is intended to supersede any previous reseller agreements betweenDell and CommVault. Page 1(Continued from Page 1, CommVault Systems Reseller Agreement)By signing below, the Reseller acknowledges that it has read, understands, andagrees, to be bound by all terms and conditions of this Reseller Agreement,including Exhibit 1 (together the “Agreement”).Dell, Inc. (“Reseller”) CommVault Systems/s/ Sean Cooper /s/ David R. West- ————————– ———————–Signature SignatureSean Cooper David R. West- ————————– ———————–Name NameGlobal Procurement VP Business Development- ————————– ———————–Title Title4/25/05 4/19/05- ————————– ———————–Date Date Page 2 Exhibit 1

MSRP/ListDELL SKU DESCRIPTION Price- ——– ———– ——— A0381892 [***] [***]A0131062 [***] [***]A0119474 [***] [***]A0119473 [***] [***]A0119472 [***] [***]A0146647 [***] [***]A0146646 [***] [***]A0143088 [***] [***]A0423903 [***] [***]A0422896 [***] [***]A0422908 [***] [***]A0422913 [***] [***]A0422916 [***] [***]A0429591 [***] [***]A0429592 [***] [***]A0131061 [***] [***]A0119471 [***] [***]A0119470 [***] [***]A0119469 [***] [***]A0223647 [***] [***]A0223649 [***] [***]A0223651 [***] [***]A0223645 [***] [***]A0131067 [***] [***]A0119468 [***] [***]A0119467 [***] [***]A0119466 [***] [***]A0131060 [***] [***]A0119607 [***] [***]A0119606 [***] [***]A0119605 [***] [***]A0131059 [***] [***]A0119604 [***] [***]A0119603 [***] [***]A0119602 [***] [***]A0119600 [***] [***]A0119598 [***] [***]A0119596 [***] [***]

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A0131031 [***] [***]A0131057 [***] [***]A0119588 [***] [***]A0119587 [***] [***]A0119586 [***] [***]A0225276 [***] [***]A0225277 [***] [***]A0225278 [***] [***]A0225279 [***] [***]A0131056 [***] [***]A0119585 [***] [***]A0119584 [***] [***]A0119583 [***] [***]A0131055 [***] [***]A0119582 [***] [***]A0119581 [***] [***]A0119579 [***] [***]A0131091 [***] [***]A0119577 [***] [***]A0119568 [***] [***]A0119567 [***] [***]A0168288 [***] [***]A0119566 [***] [***]A0119565 [***] [***]A0119564 [***] [***]A0131065 [***] [***]A0119563 [***] [***]A0119562 [***] [***]A0119561 [***] [***]A0131100 [***] [***]A0131098 [***] [***]A0131096 [***] [***]A0131094 [***] [***]A0376336 [***] [***]A0223658 [***] [***]A0223660 [***] [***]A0389492 [***] [***]A0223662 [***] [***]A0223664 [***] [***]A0223666 [***] [***]A0423753 [***] [***]

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A0423758 [***] [***]A0423766 [***] [***]A0423777 [***] [***]A0423779 [***] [***]A0423785 [***] [***]A0131064 [***] [***]A0119548 [***] [***]A0423915 [***] [***]A0131063 [***] [***]A0131085 [***] [***]A0131083 [***] [***]A0119543 [***] [***]A0131138 [***] [***]A0119539 [***] [***]A0131137 [***] [***]A0119527 [***] [***]A0131136 [***] [***]A0131135 [***] [***]A0119524 [***] [***]A0119523 [***] [***]A0131134 [***] [***]A0119519 [***] [***]A0152301 [***] [***]A0389497 [***] [***]A0389499 [***] [***]A0196063 [***] [***]A0196068 [***] [***]A0196072 [***] [***]A0196075 [***] [***]A0131133 [***] [***]A0119517 [***] [***]A0119514 [***] [***]A0119513 [***] [***]A0131132 [***] [***]A0119512 [***] [***]A0119511 [***] [***]A0119510 [***] [***]A0274379 [***] [***]A0274380 [***] [***]A0274381 [***] [***]A0274382 [***] [***]

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A0131130 [***] [***]A0119509 [***] [***]A0119508 [***] [***]A0119507 [***] [***]A0433293 [***] [***]A0433286 [***] [***]A0433287 [***] [***]A0433288 [***] [***]A0131129 [***] [***]A0119506 [***] [***]A0119505 [***] [***]A0119504 [***] [***]A0131128 [***] [***]A0119503 [***] [***]A0119502 [***] [***]A0119483 [***] [***]A0164838 [***] [***]A0164840 [***] [***]A0164843 [***] [***]A0164846 [***] [***]A0131127 [***] [***]A0119482 [***] [***]A0119481 [***] [***]A0119480 [***] [***]A0132100 [***] [***]A0229777 [***] [***]A0131125 [***] [***]A0119479 [***] [***]A0119478 [***] [***]A0119477 [***] [***]A0131124 [***] [***]A0119476 [***] [***]A0119475 [***] [***]A0119491 [***] [***]A0379894 [***] [***]A0360825 [***] [***]A0219312 [***] [***]A0219313 [***] [***]A0219315 [***] [***]A0233016 [***] [***]A0233027 [***] [***]

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A0285833 [***] [***]A0285836 [***] [***]A0223244 [***] [***]A0223246 [***] [***]A0223248 [***] [***]A0223250 [***] [***]A0233823 [***] [***]A0168302 [***] [***]A0168303 [***] [***]A0168304 [***] [***]A0159672 [***] [***]A0159674 [***] [***]A0159676 [***] [***]A0347354 [***] [***]A0347404 [***] [***]A0347408 [***] [***]A0347415 [***] [***]A0227427 [***] [***]A0228533 [***] [***]A0227428 [***] [***]A0227429 [***] [***]A0131037 [***] [***]A0227433 [***] [***]A0227434 [***] [***]A0145629 [***] [***]A0229785 [***] [***]A0132655 [***] [***]A0229790 [***] [***]A0229791 [***] [***]A0229798 [***] [***]A0229800 [***] [***]A0229802 [***] [***]A0229804 [***] [***]A0143088 [***] [***]A0148854 [***] [***]A0148860 [***] [***]A0289610 [***] [***]A0289612 [***] [***]A0289614 [***] [***]A0244848 [***] [***]A0244976 [***] [***]A0243384 [***] [***]A0118273 [***] [***]A0118275 [***] [***]

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A0118281 [***] [***]A0118295 [***] [***]A0118297 [***] [***]A0118298 [***] [***]A0290530 [***] [***]A0290531 [***] [***]A0290532 [***] [***]A0290533 [***] [***]A0118284 [***] [***]A0118285 [***] [***]A0118289 [***] [***]A0118291 [***] [***]A0243376 [***] [***]A0243377 [***] [***]A0243378 [***] [***]A0243379 [***] [***]A0243373 [***] [***]A0243374 [***] [***]A0243375 [***] [***]A0243359 [***] [***]A0243360 [***] [***]A0352266 [***] [***]A0352263 [***] [***]A0352264 [***] [***]A0352265 [***] [***]A0243056 [***] [***]A0243071 [***] [***]A0132297 [***] [***]A0131608 [***] [***]A0132299 [***] [***]A0131610 [***] [***]A0132298 [***] [***]A0131609 [***] [***]

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A0131434A0131432 [***] [***]A0219317 [***] [***]A0219319 [***] [***]A0219321 [***] [***]A0219323 [***] [***]A0219325 [***] [***]A0219327 [***] [***]A0173058 [***] [***]A0173059 [***] [***]A0173060 [***] [***]A0173061 [***] [***]A0131438 [***] [***]

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